./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.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 d33c1f18af8463c39a69fa160e98d9892e84f7d8b10911d6b0c55a462978880c --- Real Ultimate output --- This is Ultimate 0.2.5-wip.dd.update-z3-fca748b-m [2024-11-19 22:51:01,107 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 22:51:01,154 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-19 22:51:01,157 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 22:51:01,157 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 22:51:01,178 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 22:51:01,179 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 22:51:01,179 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 22:51:01,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 22:51:01,180 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 22:51:01,180 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 22:51:01,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 22:51:01,181 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 22:51:01,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 22:51:01,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 22:51:01,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 22:51:01,181 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-19 22:51:01,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 22:51:01,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 22:51:01,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 22:51:01,182 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 22:51:01,183 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-19 22:51:01,184 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 22:51:01,184 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 22:51:01,184 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 22:51:01,184 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 22:51:01,184 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 22:51:01,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:51:01,185 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 22:51:01,185 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 22:51:01,185 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-19 22:51:01,185 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 22:51:01,185 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 22:51:01,186 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 22:51:01,186 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 22:51:01,186 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 22:51:01,187 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 22:51:01,187 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d33c1f18af8463c39a69fa160e98d9892e84f7d8b10911d6b0c55a462978880c [2024-11-19 22:51:01,401 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 22:51:01,422 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 22:51:01,424 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 22:51:01,425 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 22:51:01,425 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 22:51:01,426 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-19 22:51:02,597 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 22:51:02,768 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 22:51:02,769 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-19 22:51:02,778 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35bdb855e/0f8fd3e3fc904ee7a64a5ee243c99d73/FLAG686c11293 [2024-11-19 22:51:03,155 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/35bdb855e/0f8fd3e3fc904ee7a64a5ee243c99d73 [2024-11-19 22:51:03,157 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 22:51:03,158 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 22:51:03,162 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 22:51:03,162 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 22:51:03,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 22:51:03,167 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4d497438 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03, skipping insertion in model container [2024-11-19 22:51:03,168 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,195 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 22:51:03,351 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-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2024-11-19 22:51:03,363 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:51:03,376 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 22:51:03,405 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-reduced/pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[4107,4120] [2024-11-19 22:51:03,411 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 22:51:03,425 INFO L204 MainTranslator]: Completed translation [2024-11-19 22:51:03,426 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03 WrapperNode [2024-11-19 22:51:03,426 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 22:51:03,427 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 22:51:03,427 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 22:51:03,427 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 22:51:03,432 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,439 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,462 INFO L138 Inliner]: procedures = 23, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 291 [2024-11-19 22:51:03,462 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 22:51:03,463 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 22:51:03,463 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 22:51:03,463 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 22:51:03,476 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,476 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,482 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,500 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]. [2024-11-19 22:51:03,502 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,502 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,511 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,513 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,516 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,517 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,519 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 22:51:03,523 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 22:51:03,523 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 22:51:03,524 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 22:51:03,524 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (1/1) ... [2024-11-19 22:51:03,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 22:51:03,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:03,552 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) [2024-11-19 22:51:03,554 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 [2024-11-19 22:51:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 22:51:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 22:51:03,589 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 22:51:03,589 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 22:51:03,698 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 22:51:03,701 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 22:51:03,978 INFO L? ?]: Removed 29 outVars from TransFormulas that were not future-live. [2024-11-19 22:51:03,978 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 22:51:03,995 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 22:51:03,996 INFO L316 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-19 22:51:03,997 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:51:03 BoogieIcfgContainer [2024-11-19 22:51:03,997 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 22:51:04,000 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 22:51:04,000 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 22:51:04,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 22:51:04,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 10:51:03" (1/3) ... [2024-11-19 22:51:04,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4327bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:51:04, skipping insertion in model container [2024-11-19 22:51:04,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:51:03" (2/3) ... [2024-11-19 22:51:04,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5a4327bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 10:51:04, skipping insertion in model container [2024-11-19 22:51:04,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:51:03" (3/3) ... [2024-11-19 22:51:04,005 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr.3.1.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2024-11-19 22:51:04,017 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 22:51:04,018 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-19 22:51:04,069 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 22:51:04,075 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;@5290e85d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 22:51:04,076 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-19 22:51:04,079 INFO L276 IsEmpty]: Start isEmpty. Operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 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) [2024-11-19 22:51:04,084 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 22:51:04,084 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:04,085 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:04,086 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:04,090 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:04,091 INFO L85 PathProgramCache]: Analyzing trace with hash -976687966, now seen corresponding path program 1 times [2024-11-19 22:51:04,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:04,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311807840] [2024-11-19 22:51:04,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:04,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:04,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:04,393 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311807840] [2024-11-19 22:51:04,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311807840] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:04,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:04,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:04,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992339396] [2024-11-19 22:51:04,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:04,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:04,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:04,417 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:04,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:04,419 INFO L87 Difference]: Start difference. First operand has 64 states, 62 states have (on average 1.6935483870967742) internal successors, (105), 63 states have internal predecessors, (105), 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 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-11-19 22:51:04,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:04,460 INFO L93 Difference]: Finished difference Result 146 states and 230 transitions. [2024-11-19 22:51:04,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:04,463 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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 [2024-11-19 22:51:04,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:04,472 INFO L225 Difference]: With dead ends: 146 [2024-11-19 22:51:04,472 INFO L226 Difference]: Without dead ends: 95 [2024-11-19 22:51:04,474 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:04,477 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 61 mSDsluCounter, 75 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 211 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:04,478 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 211 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:04,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-11-19 22:51:04,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 93. [2024-11-19 22:51:04,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 92 states have (on average 1.4782608695652173) internal successors, (136), 92 states have internal predecessors, (136), 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) [2024-11-19 22:51:04,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 136 transitions. [2024-11-19 22:51:04,506 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 136 transitions. Word has length 37 [2024-11-19 22:51:04,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:04,506 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 136 transitions. [2024-11-19 22:51:04,506 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 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) [2024-11-19 22:51:04,506 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 136 transitions. [2024-11-19 22:51:04,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 22:51:04,511 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:04,511 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:04,511 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 22:51:04,511 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:04,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:04,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1572742836, now seen corresponding path program 1 times [2024-11-19 22:51:04,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:04,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712361585] [2024-11-19 22:51:04,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:04,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:04,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:04,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:04,640 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:04,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712361585] [2024-11-19 22:51:04,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712361585] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:04,641 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:04,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:04,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046943121] [2024-11-19 22:51:04,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:04,642 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:04,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:04,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:04,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:04,644 INFO L87 Difference]: Start difference. First operand 93 states and 136 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) [2024-11-19 22:51:04,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:04,675 INFO L93 Difference]: Finished difference Result 225 states and 344 transitions. [2024-11-19 22:51:04,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:04,675 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 [2024-11-19 22:51:04,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:04,677 INFO L225 Difference]: With dead ends: 225 [2024-11-19 22:51:04,677 INFO L226 Difference]: Without dead ends: 151 [2024-11-19 22:51:04,679 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:04,680 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 46 mSDsluCounter, 69 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:04,680 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 176 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:04,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2024-11-19 22:51:04,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 149. [2024-11-19 22:51:04,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 148 states have (on average 1.5135135135135136) internal successors, (224), 148 states have internal predecessors, (224), 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) [2024-11-19 22:51:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 224 transitions. [2024-11-19 22:51:04,693 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 224 transitions. Word has length 38 [2024-11-19 22:51:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:04,693 INFO L471 AbstractCegarLoop]: Abstraction has 149 states and 224 transitions. [2024-11-19 22:51:04,693 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) [2024-11-19 22:51:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 224 transitions. [2024-11-19 22:51:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 22:51:04,695 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:04,695 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:04,695 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 22:51:04,696 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:04,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:04,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1624580866, now seen corresponding path program 1 times [2024-11-19 22:51:04,699 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:04,699 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1468750742] [2024-11-19 22:51:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:04,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:04,820 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:04,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:04,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1468750742] [2024-11-19 22:51:04,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1468750742] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:04,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:04,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:04,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580175843] [2024-11-19 22:51:04,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:04,823 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:04,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:04,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:04,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:04,824 INFO L87 Difference]: Start difference. First operand 149 states and 224 transitions. Second operand has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-19 22:51:04,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:04,955 INFO L93 Difference]: Finished difference Result 929 states and 1454 transitions. [2024-11-19 22:51:04,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 22:51:04,956 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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 39 [2024-11-19 22:51:04,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:04,963 INFO L225 Difference]: With dead ends: 929 [2024-11-19 22:51:04,963 INFO L226 Difference]: Without dead ends: 799 [2024-11-19 22:51:04,963 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2024-11-19 22:51:04,964 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 410 mSDsluCounter, 494 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 575 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 58 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:04,964 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 575 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:51:04,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 799 states. [2024-11-19 22:51:04,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 799 to 277. [2024-11-19 22:51:04,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 277 states, 276 states have (on average 1.5217391304347827) internal successors, (420), 276 states have internal predecessors, (420), 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) [2024-11-19 22:51:04,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 277 states to 277 states and 420 transitions. [2024-11-19 22:51:04,989 INFO L78 Accepts]: Start accepts. Automaton has 277 states and 420 transitions. Word has length 39 [2024-11-19 22:51:04,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:04,990 INFO L471 AbstractCegarLoop]: Abstraction has 277 states and 420 transitions. [2024-11-19 22:51:04,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.8) internal successors, (39), 5 states have internal predecessors, (39), 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) [2024-11-19 22:51:04,990 INFO L276 IsEmpty]: Start isEmpty. Operand 277 states and 420 transitions. [2024-11-19 22:51:04,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 22:51:04,993 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:04,993 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:04,993 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 22:51:04,993 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:04,994 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:04,994 INFO L85 PathProgramCache]: Analyzing trace with hash 1224060410, now seen corresponding path program 1 times [2024-11-19 22:51:04,994 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:04,994 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208753395] [2024-11-19 22:51:04,994 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:04,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:05,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:05,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:05,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208753395] [2024-11-19 22:51:05,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208753395] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:05,061 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:05,061 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:05,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2048625447] [2024-11-19 22:51:05,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:05,061 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:05,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:05,062 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:05,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:05,062 INFO L87 Difference]: Start difference. First operand 277 states and 420 transitions. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-19 22:51:05,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:05,094 INFO L93 Difference]: Finished difference Result 749 states and 1146 transitions. [2024-11-19 22:51:05,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:05,095 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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 41 [2024-11-19 22:51:05,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:05,097 INFO L225 Difference]: With dead ends: 749 [2024-11-19 22:51:05,097 INFO L226 Difference]: Without dead ends: 491 [2024-11-19 22:51:05,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:05,098 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 36 mSDsluCounter, 59 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 141 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:05,099 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 141 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:05,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 491 states. [2024-11-19 22:51:05,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 491 to 481. [2024-11-19 22:51:05,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.4916666666666667) internal successors, (716), 480 states have internal predecessors, (716), 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) [2024-11-19 22:51:05,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 716 transitions. [2024-11-19 22:51:05,114 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 716 transitions. Word has length 41 [2024-11-19 22:51:05,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:05,114 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 716 transitions. [2024-11-19 22:51:05,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 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) [2024-11-19 22:51:05,114 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 716 transitions. [2024-11-19 22:51:05,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 22:51:05,115 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:05,115 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:05,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-19 22:51:05,116 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:05,116 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:05,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1245063065, now seen corresponding path program 1 times [2024-11-19 22:51:05,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:05,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1221041427] [2024-11-19 22:51:05,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:05,117 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:05,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:05,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:05,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1221041427] [2024-11-19 22:51:05,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1221041427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:05,272 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:05,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:05,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1139834709] [2024-11-19 22:51:05,272 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:05,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:05,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:05,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:05,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:05,273 INFO L87 Difference]: Start difference. First operand 481 states and 716 transitions. Second operand has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-19 22:51:05,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:05,329 INFO L93 Difference]: Finished difference Result 945 states and 1414 transitions. [2024-11-19 22:51:05,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:05,330 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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 41 [2024-11-19 22:51:05,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:05,331 INFO L225 Difference]: With dead ends: 945 [2024-11-19 22:51:05,331 INFO L226 Difference]: Without dead ends: 483 [2024-11-19 22:51:05,332 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2024-11-19 22:51:05,333 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 46 mSDsluCounter, 186 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:05,333 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 266 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:05,334 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2024-11-19 22:51:05,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 481. [2024-11-19 22:51:05,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 481 states, 480 states have (on average 1.475) internal successors, (708), 480 states have internal predecessors, (708), 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) [2024-11-19 22:51:05,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 481 states to 481 states and 708 transitions. [2024-11-19 22:51:05,342 INFO L78 Accepts]: Start accepts. Automaton has 481 states and 708 transitions. Word has length 41 [2024-11-19 22:51:05,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:05,342 INFO L471 AbstractCegarLoop]: Abstraction has 481 states and 708 transitions. [2024-11-19 22:51:05,342 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.2) internal successors, (41), 5 states have internal predecessors, (41), 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) [2024-11-19 22:51:05,342 INFO L276 IsEmpty]: Start isEmpty. Operand 481 states and 708 transitions. [2024-11-19 22:51:05,344 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 22:51:05,345 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:05,345 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:05,346 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 22:51:05,346 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:05,346 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:05,346 INFO L85 PathProgramCache]: Analyzing trace with hash -59660072, now seen corresponding path program 1 times [2024-11-19 22:51:05,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:05,347 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [236815210] [2024-11-19 22:51:05,348 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:05,348 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:05,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:05,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:05,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [236815210] [2024-11-19 22:51:05,444 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [236815210] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:05,444 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:05,444 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:51:05,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286093017] [2024-11-19 22:51:05,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:05,444 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:05,444 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:05,445 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:05,445 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:05,445 INFO L87 Difference]: Start difference. First operand 481 states and 708 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:05,531 INFO L93 Difference]: Finished difference Result 1201 states and 1794 transitions. [2024-11-19 22:51:05,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:05,533 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2024-11-19 22:51:05,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:05,535 INFO L225 Difference]: With dead ends: 1201 [2024-11-19 22:51:05,535 INFO L226 Difference]: Without dead ends: 739 [2024-11-19 22:51:05,536 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:51:05,539 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 353 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 353 SdHoareTripleChecker+Valid, 93 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:05,542 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [353 Valid, 93 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:51:05,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 739 states. [2024-11-19 22:51:05,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 739 to 737. [2024-11-19 22:51:05,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.4782608695652173) internal successors, (1088), 736 states have internal predecessors, (1088), 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) [2024-11-19 22:51:05,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1088 transitions. [2024-11-19 22:51:05,558 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1088 transitions. Word has length 42 [2024-11-19 22:51:05,558 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:05,559 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1088 transitions. [2024-11-19 22:51:05,559 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,561 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1088 transitions. [2024-11-19 22:51:05,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 22:51:05,562 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:05,562 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:05,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 22:51:05,562 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:05,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:05,563 INFO L85 PathProgramCache]: Analyzing trace with hash 68425235, now seen corresponding path program 1 times [2024-11-19 22:51:05,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:05,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739540825] [2024-11-19 22:51:05,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:05,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:05,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:05,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:05,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739540825] [2024-11-19 22:51:05,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739540825] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:05,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:05,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 22:51:05,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1097457053] [2024-11-19 22:51:05,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:05,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:05,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:05,651 INFO L87 Difference]: Start difference. First operand 737 states and 1088 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,701 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:05,701 INFO L93 Difference]: Finished difference Result 1455 states and 2157 transitions. [2024-11-19 22:51:05,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:05,701 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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 42 [2024-11-19 22:51:05,702 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:05,703 INFO L225 Difference]: With dead ends: 1455 [2024-11-19 22:51:05,703 INFO L226 Difference]: Without dead ends: 737 [2024-11-19 22:51:05,704 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-19 22:51:05,705 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 209 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:05,705 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 64 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:05,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 737 states. [2024-11-19 22:51:05,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 737 to 737. [2024-11-19 22:51:05,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 737 states, 736 states have (on average 1.4619565217391304) internal successors, (1076), 736 states have internal predecessors, (1076), 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) [2024-11-19 22:51:05,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 737 states to 737 states and 1076 transitions. [2024-11-19 22:51:05,714 INFO L78 Accepts]: Start accepts. Automaton has 737 states and 1076 transitions. Word has length 42 [2024-11-19 22:51:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:05,715 INFO L471 AbstractCegarLoop]: Abstraction has 737 states and 1076 transitions. [2024-11-19 22:51:05,715 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 4 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,715 INFO L276 IsEmpty]: Start isEmpty. Operand 737 states and 1076 transitions. [2024-11-19 22:51:05,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 22:51:05,715 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:05,716 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:05,716 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 22:51:05,716 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:05,716 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:05,716 INFO L85 PathProgramCache]: Analyzing trace with hash 933957624, now seen corresponding path program 1 times [2024-11-19 22:51:05,717 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:05,717 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78406862] [2024-11-19 22:51:05,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:05,717 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:05,929 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:05,929 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:05,929 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78406862] [2024-11-19 22:51:05,929 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78406862] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:05,929 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:05,929 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:05,929 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [364060978] [2024-11-19 22:51:05,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:05,930 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:05,930 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:05,930 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:05,930 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:05,930 INFO L87 Difference]: Start difference. First operand 737 states and 1076 transitions. Second operand has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:05,954 INFO L93 Difference]: Finished difference Result 771 states and 1125 transitions. [2024-11-19 22:51:05,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:05,954 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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 42 [2024-11-19 22:51:05,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:05,957 INFO L225 Difference]: With dead ends: 771 [2024-11-19 22:51:05,958 INFO L226 Difference]: Without dead ends: 769 [2024-11-19 22:51:05,958 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:05,959 INFO L432 NwaCegarLoop]: 81 mSDtfsCounter, 0 mSDsluCounter, 232 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:05,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 313 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:05,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 769 states. [2024-11-19 22:51:05,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 769 to 769. [2024-11-19 22:51:05,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 769 states, 768 states have (on average 1.4375) internal successors, (1104), 768 states have internal predecessors, (1104), 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) [2024-11-19 22:51:05,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 769 states to 769 states and 1104 transitions. [2024-11-19 22:51:05,969 INFO L78 Accepts]: Start accepts. Automaton has 769 states and 1104 transitions. Word has length 42 [2024-11-19 22:51:05,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:05,971 INFO L471 AbstractCegarLoop]: Abstraction has 769 states and 1104 transitions. [2024-11-19 22:51:05,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.4) internal successors, (42), 5 states have internal predecessors, (42), 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) [2024-11-19 22:51:05,971 INFO L276 IsEmpty]: Start isEmpty. Operand 769 states and 1104 transitions. [2024-11-19 22:51:05,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2024-11-19 22:51:05,972 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:05,972 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:05,972 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 22:51:05,972 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:05,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:05,973 INFO L85 PathProgramCache]: Analyzing trace with hash 883353381, now seen corresponding path program 1 times [2024-11-19 22:51:05,973 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:05,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2035788722] [2024-11-19 22:51:05,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:05,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:05,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:06,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:06,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:06,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2035788722] [2024-11-19 22:51:06,017 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2035788722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:06,017 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:06,017 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:06,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [24422481] [2024-11-19 22:51:06,017 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:06,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:06,018 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:06,018 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:06,018 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:06,018 INFO L87 Difference]: Start difference. First operand 769 states and 1104 transitions. Second operand has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-19 22:51:06,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:06,038 INFO L93 Difference]: Finished difference Result 1704 states and 2478 transitions. [2024-11-19 22:51:06,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:06,038 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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 42 [2024-11-19 22:51:06,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:06,041 INFO L225 Difference]: With dead ends: 1704 [2024-11-19 22:51:06,041 INFO L226 Difference]: Without dead ends: 1157 [2024-11-19 22:51:06,042 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:06,045 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 52 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:06,045 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 185 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:06,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1157 states. [2024-11-19 22:51:06,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1157 to 1155. [2024-11-19 22:51:06,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1155 states, 1154 states have (on average 1.4298093587521663) internal successors, (1650), 1154 states have internal predecessors, (1650), 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) [2024-11-19 22:51:06,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1155 states to 1155 states and 1650 transitions. [2024-11-19 22:51:06,056 INFO L78 Accepts]: Start accepts. Automaton has 1155 states and 1650 transitions. Word has length 42 [2024-11-19 22:51:06,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:06,058 INFO L471 AbstractCegarLoop]: Abstraction has 1155 states and 1650 transitions. [2024-11-19 22:51:06,058 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 14.0) internal successors, (42), 3 states have internal predecessors, (42), 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) [2024-11-19 22:51:06,058 INFO L276 IsEmpty]: Start isEmpty. Operand 1155 states and 1650 transitions. [2024-11-19 22:51:06,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-19 22:51:06,059 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:06,059 INFO L215 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:06,059 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-19 22:51:06,059 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:06,060 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:06,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1515661308, now seen corresponding path program 1 times [2024-11-19 22:51:06,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:06,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [933787156] [2024-11-19 22:51:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:06,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:06,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:06,153 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 22:51:06,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:06,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [933787156] [2024-11-19 22:51:06,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [933787156] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:06,155 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:06,155 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:06,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12211823] [2024-11-19 22:51:06,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:06,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:06,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:06,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:06,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:06,156 INFO L87 Difference]: Start difference. First operand 1155 states and 1650 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-19 22:51:06,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:06,211 INFO L93 Difference]: Finished difference Result 4923 states and 7048 transitions. [2024-11-19 22:51:06,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:06,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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 61 [2024-11-19 22:51:06,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:06,219 INFO L225 Difference]: With dead ends: 4923 [2024-11-19 22:51:06,219 INFO L226 Difference]: Without dead ends: 3789 [2024-11-19 22:51:06,220 INFO L431 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 [2024-11-19 22:51:06,221 INFO L432 NwaCegarLoop]: 138 mSDtfsCounter, 229 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 339 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:06,222 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 339 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:06,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3789 states. [2024-11-19 22:51:06,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3789 to 2287. [2024-11-19 22:51:06,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 2286 states have (on average 1.4251968503937007) internal successors, (3258), 2286 states have internal predecessors, (3258), 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) [2024-11-19 22:51:06,254 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 3258 transitions. [2024-11-19 22:51:06,254 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 3258 transitions. Word has length 61 [2024-11-19 22:51:06,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:06,254 INFO L471 AbstractCegarLoop]: Abstraction has 2287 states and 3258 transitions. [2024-11-19 22:51:06,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 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) [2024-11-19 22:51:06,256 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 3258 transitions. [2024-11-19 22:51:06,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-19 22:51:06,258 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:06,258 INFO L215 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:06,258 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 22:51:06,258 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:06,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:06,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1625359882, now seen corresponding path program 1 times [2024-11-19 22:51:06,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:06,259 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2130129546] [2024-11-19 22:51:06,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:06,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:06,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:06,348 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 22:51:06,348 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:06,348 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2130129546] [2024-11-19 22:51:06,348 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2130129546] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:06,348 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:06,348 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:06,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [767055949] [2024-11-19 22:51:06,349 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:06,349 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:06,349 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:06,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:06,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:06,349 INFO L87 Difference]: Start difference. First operand 2287 states and 3258 transitions. Second operand has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-11-19 22:51:06,411 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:06,411 INFO L93 Difference]: Finished difference Result 6055 states and 8656 transitions. [2024-11-19 22:51:06,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:06,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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 61 [2024-11-19 22:51:06,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:06,423 INFO L225 Difference]: With dead ends: 6055 [2024-11-19 22:51:06,423 INFO L226 Difference]: Without dead ends: 4921 [2024-11-19 22:51:06,427 INFO L431 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 [2024-11-19 22:51:06,427 INFO L432 NwaCegarLoop]: 141 mSDtfsCounter, 219 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 219 SdHoareTripleChecker+Valid, 384 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:06,428 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [219 Valid, 384 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:06,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4921 states. [2024-11-19 22:51:06,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4921 to 3987. [2024-11-19 22:51:06,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3987 states, 3986 states have (on average 1.417962870045158) internal successors, (5652), 3986 states have internal predecessors, (5652), 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) [2024-11-19 22:51:06,485 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3987 states to 3987 states and 5652 transitions. [2024-11-19 22:51:06,485 INFO L78 Accepts]: Start accepts. Automaton has 3987 states and 5652 transitions. Word has length 61 [2024-11-19 22:51:06,485 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:06,485 INFO L471 AbstractCegarLoop]: Abstraction has 3987 states and 5652 transitions. [2024-11-19 22:51:06,485 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.0) internal successors, (55), 5 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) [2024-11-19 22:51:06,485 INFO L276 IsEmpty]: Start isEmpty. Operand 3987 states and 5652 transitions. [2024-11-19 22:51:06,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 22:51:06,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:06,486 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:06,486 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 22:51:06,486 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:06,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:06,487 INFO L85 PathProgramCache]: Analyzing trace with hash -2114297975, now seen corresponding path program 1 times [2024-11-19 22:51:06,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:06,487 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116423160] [2024-11-19 22:51:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:06,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:06,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:06,567 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-19 22:51:06,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:06,567 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116423160] [2024-11-19 22:51:06,567 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116423160] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:06,567 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:06,567 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 22:51:06,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685583013] [2024-11-19 22:51:06,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:06,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 22:51:06,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:06,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 22:51:06,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 22:51:06,569 INFO L87 Difference]: Start difference. First operand 3987 states and 5652 transitions. Second operand has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-19 22:51:06,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:06,628 INFO L93 Difference]: Finished difference Result 6779 states and 9712 transitions. [2024-11-19 22:51:06,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 22:51:06,628 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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 [2024-11-19 22:51:06,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:06,640 INFO L225 Difference]: With dead ends: 6779 [2024-11-19 22:51:06,640 INFO L226 Difference]: Without dead ends: 5849 [2024-11-19 22:51:06,643 INFO L431 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 [2024-11-19 22:51:06,644 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 215 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 348 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:06,644 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 348 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:06,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5849 states. [2024-11-19 22:51:06,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5849 to 4915. [2024-11-19 22:51:06,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4915 states, 4914 states have (on average 1.422059422059422) internal successors, (6988), 4914 states have internal predecessors, (6988), 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) [2024-11-19 22:51:06,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4915 states to 4915 states and 6988 transitions. [2024-11-19 22:51:06,740 INFO L78 Accepts]: Start accepts. Automaton has 4915 states and 6988 transitions. Word has length 62 [2024-11-19 22:51:06,740 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:06,740 INFO L471 AbstractCegarLoop]: Abstraction has 4915 states and 6988 transitions. [2024-11-19 22:51:06,740 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.2) internal successors, (61), 5 states have internal predecessors, (61), 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) [2024-11-19 22:51:06,740 INFO L276 IsEmpty]: Start isEmpty. Operand 4915 states and 6988 transitions. [2024-11-19 22:51:06,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 22:51:06,741 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:06,741 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:06,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 22:51:06,741 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:06,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:06,742 INFO L85 PathProgramCache]: Analyzing trace with hash -344216809, now seen corresponding path program 1 times [2024-11-19 22:51:06,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:06,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919212119] [2024-11-19 22:51:06,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:06,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:06,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:06,804 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:06,804 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:06,805 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919212119] [2024-11-19 22:51:06,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919212119] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:06,805 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:06,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:06,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1359314407] [2024-11-19 22:51:06,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:06,805 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:06,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:06,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:06,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:06,806 INFO L87 Difference]: Start difference. First operand 4915 states and 6988 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-19 22:51:06,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:06,832 INFO L93 Difference]: Finished difference Result 9121 states and 13033 transitions. [2024-11-19 22:51:06,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:06,832 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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 63 [2024-11-19 22:51:06,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:06,841 INFO L225 Difference]: With dead ends: 9121 [2024-11-19 22:51:06,841 INFO L226 Difference]: Without dead ends: 4227 [2024-11-19 22:51:06,845 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:06,845 INFO L432 NwaCegarLoop]: 108 mSDtfsCounter, 39 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 176 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:06,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 176 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:06,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4227 states. [2024-11-19 22:51:06,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4227 to 4225. [2024-11-19 22:51:06,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4225 states, 4224 states have (on average 1.418560606060606) internal successors, (5992), 4224 states have internal predecessors, (5992), 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) [2024-11-19 22:51:06,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4225 states to 4225 states and 5992 transitions. [2024-11-19 22:51:06,890 INFO L78 Accepts]: Start accepts. Automaton has 4225 states and 5992 transitions. Word has length 63 [2024-11-19 22:51:06,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:06,891 INFO L471 AbstractCegarLoop]: Abstraction has 4225 states and 5992 transitions. [2024-11-19 22:51:06,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 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) [2024-11-19 22:51:06,891 INFO L276 IsEmpty]: Start isEmpty. Operand 4225 states and 5992 transitions. [2024-11-19 22:51:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-11-19 22:51:06,892 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:06,892 INFO L215 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, 1, 1, 1] [2024-11-19 22:51:06,892 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 22:51:06,892 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:06,893 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:06,893 INFO L85 PathProgramCache]: Analyzing trace with hash -2058333971, now seen corresponding path program 1 times [2024-11-19 22:51:06,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:06,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [871511522] [2024-11-19 22:51:06,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:06,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:06,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:07,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:07,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [871511522] [2024-11-19 22:51:07,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [871511522] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:51:07,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775767062] [2024-11-19 22:51:07,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:07,304 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:07,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:07,307 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) [2024-11-19 22:51:07,308 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 22:51:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:07,398 INFO L255 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 22:51:07,406 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:51:07,838 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:07,838 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:51:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:08,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775767062] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:51:08,237 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:51:08,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-19 22:51:08,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [939747058] [2024-11-19 22:51:08,237 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:51:08,238 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 22:51:08,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:08,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 22:51:08,239 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2024-11-19 22:51:08,240 INFO L87 Difference]: Start difference. First operand 4225 states and 5992 transitions. Second operand has 28 states, 28 states have (on average 5.678571428571429) internal successors, (159), 27 states have internal predecessors, (159), 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) [2024-11-19 22:51:08,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:08,935 INFO L93 Difference]: Finished difference Result 13058 states and 18371 transitions. [2024-11-19 22:51:08,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-19 22:51:08,935 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 28 states have (on average 5.678571428571429) internal successors, (159), 27 states have internal predecessors, (159), 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 63 [2024-11-19 22:51:08,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:08,953 INFO L225 Difference]: With dead ends: 13058 [2024-11-19 22:51:08,953 INFO L226 Difference]: Without dead ends: 8880 [2024-11-19 22:51:08,959 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 158 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 514 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=523, Invalid=1829, Unknown=0, NotChecked=0, Total=2352 [2024-11-19 22:51:08,960 INFO L432 NwaCegarLoop]: 67 mSDtfsCounter, 1488 mSDsluCounter, 469 mSDsCounter, 0 mSdLazyCounter, 566 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 590 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 566 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:08,960 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 536 Invalid, 590 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 566 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 22:51:08,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8880 states. [2024-11-19 22:51:09,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8880 to 7146. [2024-11-19 22:51:09,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7146 states, 7145 states have (on average 1.4090972708187544) internal successors, (10068), 7145 states have internal predecessors, (10068), 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) [2024-11-19 22:51:09,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7146 states to 7146 states and 10068 transitions. [2024-11-19 22:51:09,056 INFO L78 Accepts]: Start accepts. Automaton has 7146 states and 10068 transitions. Word has length 63 [2024-11-19 22:51:09,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:09,056 INFO L471 AbstractCegarLoop]: Abstraction has 7146 states and 10068 transitions. [2024-11-19 22:51:09,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 5.678571428571429) internal successors, (159), 27 states have internal predecessors, (159), 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) [2024-11-19 22:51:09,057 INFO L276 IsEmpty]: Start isEmpty. Operand 7146 states and 10068 transitions. [2024-11-19 22:51:09,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:51:09,058 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:09,058 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:09,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 22:51:09,258 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,SelfDestructingSolverStorable13 [2024-11-19 22:51:09,259 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:09,259 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:09,259 INFO L85 PathProgramCache]: Analyzing trace with hash -377166044, now seen corresponding path program 1 times [2024-11-19 22:51:09,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:09,260 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2029163184] [2024-11-19 22:51:09,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:09,260 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:09,334 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:09,334 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2029163184] [2024-11-19 22:51:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2029163184] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:09,335 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136764196] [2024-11-19 22:51:09,335 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:09,335 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:09,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:09,336 INFO L87 Difference]: Start difference. First operand 7146 states and 10068 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-19 22:51:09,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:09,400 INFO L93 Difference]: Finished difference Result 11038 states and 15542 transitions. [2024-11-19 22:51:09,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:09,401 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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 64 [2024-11-19 22:51:09,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:09,406 INFO L225 Difference]: With dead ends: 11038 [2024-11-19 22:51:09,406 INFO L226 Difference]: Without dead ends: 3962 [2024-11-19 22:51:09,410 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:09,410 INFO L432 NwaCegarLoop]: 101 mSDtfsCounter, 32 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:09,411 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 161 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:09,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3962 states. [2024-11-19 22:51:09,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3962 to 3960. [2024-11-19 22:51:09,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3960 states, 3959 states have (on average 1.374589542813842) internal successors, (5442), 3959 states have internal predecessors, (5442), 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) [2024-11-19 22:51:09,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3960 states to 3960 states and 5442 transitions. [2024-11-19 22:51:09,452 INFO L78 Accepts]: Start accepts. Automaton has 3960 states and 5442 transitions. Word has length 64 [2024-11-19 22:51:09,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:09,452 INFO L471 AbstractCegarLoop]: Abstraction has 3960 states and 5442 transitions. [2024-11-19 22:51:09,453 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 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) [2024-11-19 22:51:09,453 INFO L276 IsEmpty]: Start isEmpty. Operand 3960 states and 5442 transitions. [2024-11-19 22:51:09,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-19 22:51:09,453 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:09,453 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:09,454 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 22:51:09,454 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:09,454 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:09,454 INFO L85 PathProgramCache]: Analyzing trace with hash 794642143, now seen corresponding path program 1 times [2024-11-19 22:51:09,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:09,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475941985] [2024-11-19 22:51:09,455 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:09,455 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:09,682 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:09,682 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:09,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475941985] [2024-11-19 22:51:09,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475941985] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:51:09,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262409579] [2024-11-19 22:51:09,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:09,683 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:09,683 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:09,685 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) [2024-11-19 22:51:09,686 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 22:51:09,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:09,762 INFO L255 TraceCheckSpWp]: Trace formula consists of 300 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-11-19 22:51:09,764 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:51:10,529 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:10,529 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:51:11,072 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:11,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262409579] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:51:11,073 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:51:11,073 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 13, 13] total 32 [2024-11-19 22:51:11,073 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052106780] [2024-11-19 22:51:11,073 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:51:11,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 22:51:11,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:11,074 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 22:51:11,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=100, Invalid=892, Unknown=0, NotChecked=0, Total=992 [2024-11-19 22:51:11,075 INFO L87 Difference]: Start difference. First operand 3960 states and 5442 transitions. Second operand has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 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) [2024-11-19 22:51:21,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:21,283 INFO L93 Difference]: Finished difference Result 52489 states and 71692 transitions. [2024-11-19 22:51:21,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 254 states. [2024-11-19 22:51:21,284 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 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 64 [2024-11-19 22:51:21,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:21,345 INFO L225 Difference]: With dead ends: 52489 [2024-11-19 22:51:21,345 INFO L226 Difference]: Without dead ends: 48575 [2024-11-19 22:51:21,372 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 388 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 282 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34837 ImplicationChecksByTransitivity, 9.0s TimeCoverageRelationStatistics Valid=9372, Invalid=71000, Unknown=0, NotChecked=0, Total=80372 [2024-11-19 22:51:21,373 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 8217 mSDsluCounter, 1812 mSDsCounter, 0 mSdLazyCounter, 2445 mSolverCounterSat, 101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8217 SdHoareTripleChecker+Valid, 1899 SdHoareTripleChecker+Invalid, 2546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 101 IncrementalHoareTripleChecker+Valid, 2445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:21,373 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8217 Valid, 1899 Invalid, 2546 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [101 Valid, 2445 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2024-11-19 22:51:21,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48575 states. [2024-11-19 22:51:21,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48575 to 8662. [2024-11-19 22:51:21,656 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8662 states, 8661 states have (on average 1.3673940653504215) internal successors, (11843), 8661 states have internal predecessors, (11843), 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) [2024-11-19 22:51:21,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8662 states to 8662 states and 11843 transitions. [2024-11-19 22:51:21,671 INFO L78 Accepts]: Start accepts. Automaton has 8662 states and 11843 transitions. Word has length 64 [2024-11-19 22:51:21,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:21,671 INFO L471 AbstractCegarLoop]: Abstraction has 8662 states and 11843 transitions. [2024-11-19 22:51:21,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.21875) internal successors, (167), 32 states have internal predecessors, (167), 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) [2024-11-19 22:51:21,672 INFO L276 IsEmpty]: Start isEmpty. Operand 8662 states and 11843 transitions. [2024-11-19 22:51:21,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 22:51:21,672 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:21,673 INFO L215 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, 1, 1, 1, 1, 1] [2024-11-19 22:51:21,680 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 22:51:21,873 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,SelfDestructingSolverStorable15 [2024-11-19 22:51:21,874 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:21,874 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:21,874 INFO L85 PathProgramCache]: Analyzing trace with hash -511261406, now seen corresponding path program 1 times [2024-11-19 22:51:21,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:21,875 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1465196345] [2024-11-19 22:51:21,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:21,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:22,047 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:22,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1465196345] [2024-11-19 22:51:22,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1465196345] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:51:22,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1013537217] [2024-11-19 22:51:22,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:22,048 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:22,048 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:22,050 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) [2024-11-19 22:51:22,051 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 22:51:22,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:22,137 INFO L255 TraceCheckSpWp]: Trace formula consists of 299 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-19 22:51:22,141 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:51:22,331 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:22,332 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:51:22,511 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:22,511 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1013537217] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:51:22,511 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:51:22,511 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 6, 6] total 18 [2024-11-19 22:51:22,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889827201] [2024-11-19 22:51:22,511 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:51:22,512 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-19 22:51:22,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:22,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-19 22:51:22,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=251, Unknown=0, NotChecked=0, Total=306 [2024-11-19 22:51:22,512 INFO L87 Difference]: Start difference. First operand 8662 states and 11843 transitions. Second operand has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2024-11-19 22:51:24,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:24,645 INFO L93 Difference]: Finished difference Result 85222 states and 115987 transitions. [2024-11-19 22:51:24,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 82 states. [2024-11-19 22:51:24,645 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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 65 [2024-11-19 22:51:24,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:24,729 INFO L225 Difference]: With dead ends: 85222 [2024-11-19 22:51:24,729 INFO L226 Difference]: Without dead ends: 75641 [2024-11-19 22:51:24,755 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 216 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3342 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1509, Invalid=7803, Unknown=0, NotChecked=0, Total=9312 [2024-11-19 22:51:24,756 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 1605 mSDsluCounter, 1060 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 56 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 1186 SdHoareTripleChecker+Invalid, 2410 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 56 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:24,756 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1605 Valid, 1186 Invalid, 2410 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [56 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-19 22:51:24,803 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75641 states. [2024-11-19 22:51:25,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75641 to 61982. [2024-11-19 22:51:25,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61982 states, 61981 states have (on average 1.3280198770590987) internal successors, (82312), 61981 states have internal predecessors, (82312), 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) [2024-11-19 22:51:25,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61982 states to 61982 states and 82312 transitions. [2024-11-19 22:51:25,568 INFO L78 Accepts]: Start accepts. Automaton has 61982 states and 82312 transitions. Word has length 65 [2024-11-19 22:51:25,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:25,568 INFO L471 AbstractCegarLoop]: Abstraction has 61982 states and 82312 transitions. [2024-11-19 22:51:25,568 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 10.277777777777779) internal successors, (185), 18 states have internal predecessors, (185), 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) [2024-11-19 22:51:25,568 INFO L276 IsEmpty]: Start isEmpty. Operand 61982 states and 82312 transitions. [2024-11-19 22:51:25,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-19 22:51:25,570 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:25,571 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:25,579 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-19 22:51:25,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:25,772 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:25,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:25,773 INFO L85 PathProgramCache]: Analyzing trace with hash 76199226, now seen corresponding path program 1 times [2024-11-19 22:51:25,773 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:25,773 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1494725232] [2024-11-19 22:51:25,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:25,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:25,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:26,273 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:26,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1494725232] [2024-11-19 22:51:26,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1494725232] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:51:26,274 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1243313438] [2024-11-19 22:51:26,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:26,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:26,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:26,275 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) [2024-11-19 22:51:26,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 22:51:26,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:26,395 INFO L255 TraceCheckSpWp]: Trace formula consists of 302 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 22:51:26,397 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:51:29,383 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:29,383 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:51:30,477 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:30,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1243313438] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:51:30,478 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:51:30,478 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 20, 17] total 46 [2024-11-19 22:51:30,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498409860] [2024-11-19 22:51:30,478 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:51:30,478 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2024-11-19 22:51:30,478 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:30,479 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2024-11-19 22:51:30,479 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=1851, Unknown=0, NotChecked=0, Total=2070 [2024-11-19 22:51:30,479 INFO L87 Difference]: Start difference. First operand 61982 states and 82312 transitions. Second operand has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 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) [2024-11-19 22:51:53,849 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:53,850 INFO L93 Difference]: Finished difference Result 222327 states and 295622 transitions. [2024-11-19 22:51:53,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 247 states. [2024-11-19 22:51:53,850 INFO L78 Accepts]: Start accepts. Automaton has has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 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) Word has length 65 [2024-11-19 22:51:53,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:54,030 INFO L225 Difference]: With dead ends: 222327 [2024-11-19 22:51:54,030 INFO L226 Difference]: Without dead ends: 182539 [2024-11-19 22:51:54,108 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 383 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 286 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31761 ImplicationChecksByTransitivity, 22.0s TimeCoverageRelationStatistics Valid=10256, Invalid=72400, Unknown=0, NotChecked=0, Total=82656 [2024-11-19 22:51:54,108 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 5024 mSDsluCounter, 4486 mSDsCounter, 0 mSdLazyCounter, 3486 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5024 SdHoareTripleChecker+Valid, 4653 SdHoareTripleChecker+Invalid, 3577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 3486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:54,108 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5024 Valid, 4653 Invalid, 3577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 3486 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2024-11-19 22:51:54,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182539 states. [2024-11-19 22:51:55,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182539 to 113163. [2024-11-19 22:51:55,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113163 states, 113162 states have (on average 1.3350948198158392) internal successors, (151082), 113162 states have internal predecessors, (151082), 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) [2024-11-19 22:51:55,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113163 states to 113163 states and 151082 transitions. [2024-11-19 22:51:55,794 INFO L78 Accepts]: Start accepts. Automaton has 113163 states and 151082 transitions. Word has length 65 [2024-11-19 22:51:55,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:55,794 INFO L471 AbstractCegarLoop]: Abstraction has 113163 states and 151082 transitions. [2024-11-19 22:51:55,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 3.9347826086956523) internal successors, (181), 46 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) [2024-11-19 22:51:55,795 INFO L276 IsEmpty]: Start isEmpty. Operand 113163 states and 151082 transitions. [2024-11-19 22:51:55,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-19 22:51:55,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:55,801 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:55,824 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 22:51:56,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-19 22:51:56,003 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:56,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:56,003 INFO L85 PathProgramCache]: Analyzing trace with hash 200966917, now seen corresponding path program 1 times [2024-11-19 22:51:56,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:56,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [931957958] [2024-11-19 22:51:56,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:56,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:56,026 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-19 22:51:56,026 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:56,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [931957958] [2024-11-19 22:51:56,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [931957958] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:56,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:56,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:56,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61347183] [2024-11-19 22:51:56,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:56,027 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:56,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:56,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:56,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:56,028 INFO L87 Difference]: Start difference. First operand 113163 states and 151082 transitions. Second operand has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-19 22:51:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:56,701 INFO L93 Difference]: Finished difference Result 194845 states and 260260 transitions. [2024-11-19 22:51:56,708 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:56,708 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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 66 [2024-11-19 22:51:56,709 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:56,851 INFO L225 Difference]: With dead ends: 194845 [2024-11-19 22:51:56,851 INFO L226 Difference]: Without dead ends: 83027 [2024-11-19 22:51:56,897 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:56,898 INFO L432 NwaCegarLoop]: 72 mSDtfsCounter, 53 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 100 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:56,902 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 100 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:56,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83027 states. [2024-11-19 22:51:57,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83027 to 83027. [2024-11-19 22:51:57,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83027 states, 83026 states have (on average 1.321224676607328) internal successors, (109696), 83026 states have internal predecessors, (109696), 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) [2024-11-19 22:51:57,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83027 states to 83027 states and 109696 transitions. [2024-11-19 22:51:57,905 INFO L78 Accepts]: Start accepts. Automaton has 83027 states and 109696 transitions. Word has length 66 [2024-11-19 22:51:57,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:57,906 INFO L471 AbstractCegarLoop]: Abstraction has 83027 states and 109696 transitions. [2024-11-19 22:51:57,906 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.0) internal successors, (60), 3 states have internal predecessors, (60), 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) [2024-11-19 22:51:57,906 INFO L276 IsEmpty]: Start isEmpty. Operand 83027 states and 109696 transitions. [2024-11-19 22:51:57,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 22:51:57,908 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:57,908 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:57,909 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 22:51:57,909 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:57,911 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:57,911 INFO L85 PathProgramCache]: Analyzing trace with hash 852456662, now seen corresponding path program 1 times [2024-11-19 22:51:57,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:57,912 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [919394192] [2024-11-19 22:51:57,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:57,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:57,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:57,947 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2024-11-19 22:51:57,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:57,948 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [919394192] [2024-11-19 22:51:57,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [919394192] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:57,948 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:57,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:57,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249404805] [2024-11-19 22:51:57,948 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:57,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:57,949 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:57,950 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:57,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:57,950 INFO L87 Difference]: Start difference. First operand 83027 states and 109696 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 22:51:58,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:58,372 INFO L93 Difference]: Finished difference Result 129902 states and 172392 transitions. [2024-11-19 22:51:58,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:58,373 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 67 [2024-11-19 22:51:58,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:58,426 INFO L225 Difference]: With dead ends: 129902 [2024-11-19 22:51:58,426 INFO L226 Difference]: Without dead ends: 46944 [2024-11-19 22:51:58,467 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:58,468 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 48 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:58,468 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 77 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:58,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46944 states. [2024-11-19 22:51:58,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46944 to 45641. [2024-11-19 22:51:58,953 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45641 states, 45640 states have (on average 1.3196538124452235) internal successors, (60229), 45640 states have internal predecessors, (60229), 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) [2024-11-19 22:51:59,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45641 states to 45641 states and 60229 transitions. [2024-11-19 22:51:59,136 INFO L78 Accepts]: Start accepts. Automaton has 45641 states and 60229 transitions. Word has length 67 [2024-11-19 22:51:59,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:59,136 INFO L471 AbstractCegarLoop]: Abstraction has 45641 states and 60229 transitions. [2024-11-19 22:51:59,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 22:51:59,136 INFO L276 IsEmpty]: Start isEmpty. Operand 45641 states and 60229 transitions. [2024-11-19 22:51:59,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-19 22:51:59,142 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:59,142 INFO L215 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:59,142 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-19 22:51:59,142 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:59,142 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:59,142 INFO L85 PathProgramCache]: Analyzing trace with hash -765294079, now seen corresponding path program 1 times [2024-11-19 22:51:59,142 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:59,146 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1522241559] [2024-11-19 22:51:59,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:59,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:59,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:59,183 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-11-19 22:51:59,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:59,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1522241559] [2024-11-19 22:51:59,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1522241559] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:51:59,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:51:59,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:51:59,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212064045] [2024-11-19 22:51:59,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:51:59,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:51:59,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:51:59,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:51:59,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:59,188 INFO L87 Difference]: Start difference. First operand 45641 states and 60229 transitions. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 22:51:59,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:51:59,318 INFO L93 Difference]: Finished difference Result 84033 states and 111063 transitions. [2024-11-19 22:51:59,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:51:59,318 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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 67 [2024-11-19 22:51:59,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:51:59,356 INFO L225 Difference]: With dead ends: 84033 [2024-11-19 22:51:59,356 INFO L226 Difference]: Without dead ends: 38702 [2024-11-19 22:51:59,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:51:59,382 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 51 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 94 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:51:59,382 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 94 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:51:59,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38702 states. [2024-11-19 22:51:59,747 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38702 to 38702. [2024-11-19 22:51:59,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38702 states, 38701 states have (on average 1.3001214438903388) internal successors, (50316), 38701 states have internal predecessors, (50316), 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) [2024-11-19 22:51:59,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38702 states to 38702 states and 50316 transitions. [2024-11-19 22:51:59,813 INFO L78 Accepts]: Start accepts. Automaton has 38702 states and 50316 transitions. Word has length 67 [2024-11-19 22:51:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:51:59,813 INFO L471 AbstractCegarLoop]: Abstraction has 38702 states and 50316 transitions. [2024-11-19 22:51:59,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 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) [2024-11-19 22:51:59,814 INFO L276 IsEmpty]: Start isEmpty. Operand 38702 states and 50316 transitions. [2024-11-19 22:51:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2024-11-19 22:51:59,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:51:59,815 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:51:59,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 22:51:59,815 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:51:59,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:51:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash -1357881450, now seen corresponding path program 1 times [2024-11-19 22:51:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:51:59,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150991082] [2024-11-19 22:51:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:59,815 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:51:59,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:51:59,916 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:51:59,916 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:51:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150991082] [2024-11-19 22:51:59,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1150991082] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:51:59,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1424777893] [2024-11-19 22:51:59,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:51:59,916 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:51:59,917 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:51:59,920 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) [2024-11-19 22:51:59,921 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 22:52:00,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:00,170 INFO L255 TraceCheckSpWp]: Trace formula consists of 369 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 22:52:00,173 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:00,369 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:00,369 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:00,460 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 12 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:00,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1424777893] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:00,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:00,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 10 [2024-11-19 22:52:00,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039444081] [2024-11-19 22:52:00,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:00,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 22:52:00,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:00,462 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 22:52:00,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-19 22:52:00,463 INFO L87 Difference]: Start difference. First operand 38702 states and 50316 transitions. Second operand has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 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) [2024-11-19 22:52:00,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:00,679 INFO L93 Difference]: Finished difference Result 66074 states and 86016 transitions. [2024-11-19 22:52:00,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 22:52:00,680 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 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 88 [2024-11-19 22:52:00,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:00,716 INFO L225 Difference]: With dead ends: 66074 [2024-11-19 22:52:00,716 INFO L226 Difference]: Without dead ends: 36726 [2024-11-19 22:52:00,739 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 166 SyntacticMatches, 5 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-19 22:52:00,740 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 163 mSDsluCounter, 206 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 163 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:00,741 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [163 Valid, 266 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 22:52:00,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36726 states. [2024-11-19 22:52:01,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36726 to 36724. [2024-11-19 22:52:01,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36724 states, 36723 states have (on average 1.2775100073523404) internal successors, (46914), 36723 states have internal predecessors, (46914), 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) [2024-11-19 22:52:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36724 states to 36724 states and 46914 transitions. [2024-11-19 22:52:01,211 INFO L78 Accepts]: Start accepts. Automaton has 36724 states and 46914 transitions. Word has length 88 [2024-11-19 22:52:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:01,211 INFO L471 AbstractCegarLoop]: Abstraction has 36724 states and 46914 transitions. [2024-11-19 22:52:01,211 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 14.272727272727273) internal successors, (157), 10 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) [2024-11-19 22:52:01,211 INFO L276 IsEmpty]: Start isEmpty. Operand 36724 states and 46914 transitions. [2024-11-19 22:52:01,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 22:52:01,215 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:01,215 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:01,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 22:52:01,415 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable21 [2024-11-19 22:52:01,416 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:01,416 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:01,416 INFO L85 PathProgramCache]: Analyzing trace with hash -781261245, now seen corresponding path program 1 times [2024-11-19 22:52:01,416 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:01,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777446133] [2024-11-19 22:52:01,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:01,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:01,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:01,479 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 69 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 22:52:01,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:01,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777446133] [2024-11-19 22:52:01,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777446133] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 22:52:01,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 22:52:01,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 22:52:01,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720973301] [2024-11-19 22:52:01,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 22:52:01,480 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 22:52:01,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:01,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 22:52:01,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:01,480 INFO L87 Difference]: Start difference. First operand 36724 states and 46914 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-19 22:52:01,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:01,561 INFO L93 Difference]: Finished difference Result 51688 states and 66248 transitions. [2024-11-19 22:52:01,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 22:52:01,562 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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 110 [2024-11-19 22:52:01,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:01,577 INFO L225 Difference]: With dead ends: 51688 [2024-11-19 22:52:01,577 INFO L226 Difference]: Without dead ends: 15504 [2024-11-19 22:52:01,594 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 22:52:01,595 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 24 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:01,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 138 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 22:52:01,600 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15504 states. [2024-11-19 22:52:01,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15504 to 15502. [2024-11-19 22:52:01,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15502 states, 15501 states have (on average 1.2661118637507258) internal successors, (19626), 15501 states have internal predecessors, (19626), 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) [2024-11-19 22:52:01,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15502 states to 15502 states and 19626 transitions. [2024-11-19 22:52:01,716 INFO L78 Accepts]: Start accepts. Automaton has 15502 states and 19626 transitions. Word has length 110 [2024-11-19 22:52:01,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:01,716 INFO L471 AbstractCegarLoop]: Abstraction has 15502 states and 19626 transitions. [2024-11-19 22:52:01,716 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 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) [2024-11-19 22:52:01,716 INFO L276 IsEmpty]: Start isEmpty. Operand 15502 states and 19626 transitions. [2024-11-19 22:52:01,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 22:52:01,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:01,718 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:01,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 22:52:01,718 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:01,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:01,719 INFO L85 PathProgramCache]: Analyzing trace with hash -539067345, now seen corresponding path program 1 times [2024-11-19 22:52:01,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:01,719 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875973608] [2024-11-19 22:52:01,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:01,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:02,079 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 28 proven. 65 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:02,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875973608] [2024-11-19 22:52:02,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875973608] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:02,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [631112204] [2024-11-19 22:52:02,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:02,080 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:02,081 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:02,082 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) [2024-11-19 22:52:02,083 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 22:52:02,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:02,179 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 19 conjuncts are in the unsatisfiable core [2024-11-19 22:52:02,181 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:02,582 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 40 proven. 53 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:02,583 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:03,469 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 36 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:03,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [631112204] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:03,470 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:03,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-11-19 22:52:03,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1012994908] [2024-11-19 22:52:03,470 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:03,470 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-11-19 22:52:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:03,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-11-19 22:52:03,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=879, Unknown=0, NotChecked=0, Total=992 [2024-11-19 22:52:03,471 INFO L87 Difference]: Start difference. First operand 15502 states and 19626 transitions. Second operand has 32 states, 32 states have (on average 9.3125) internal successors, (298), 31 states have internal predecessors, (298), 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) [2024-11-19 22:52:04,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 22:52:04,920 INFO L93 Difference]: Finished difference Result 29000 states and 36647 transitions. [2024-11-19 22:52:04,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-19 22:52:04,921 INFO L78 Accepts]: Start accepts. Automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 31 states have internal predecessors, (298), 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 110 [2024-11-19 22:52:04,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 22:52:04,931 INFO L225 Difference]: With dead ends: 29000 [2024-11-19 22:52:04,932 INFO L226 Difference]: Without dead ends: 13912 [2024-11-19 22:52:04,940 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 264 GetRequests, 199 SyntacticMatches, 0 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 753 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=826, Invalid=3596, Unknown=0, NotChecked=0, Total=4422 [2024-11-19 22:52:04,940 INFO L432 NwaCegarLoop]: 68 mSDtfsCounter, 1122 mSDsluCounter, 982 mSDsCounter, 0 mSdLazyCounter, 1108 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1122 SdHoareTripleChecker+Valid, 1050 SdHoareTripleChecker+Invalid, 1144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 1108 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-19 22:52:04,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1122 Valid, 1050 Invalid, 1144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 1108 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-19 22:52:04,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13912 states. [2024-11-19 22:52:05,012 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13912 to 11066. [2024-11-19 22:52:05,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11066 states, 11065 states have (on average 1.2129236330772706) internal successors, (13421), 11065 states have internal predecessors, (13421), 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) [2024-11-19 22:52:05,025 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11066 states to 11066 states and 13421 transitions. [2024-11-19 22:52:05,025 INFO L78 Accepts]: Start accepts. Automaton has 11066 states and 13421 transitions. Word has length 110 [2024-11-19 22:52:05,026 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 22:52:05,026 INFO L471 AbstractCegarLoop]: Abstraction has 11066 states and 13421 transitions. [2024-11-19 22:52:05,026 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 9.3125) internal successors, (298), 31 states have internal predecessors, (298), 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) [2024-11-19 22:52:05,026 INFO L276 IsEmpty]: Start isEmpty. Operand 11066 states and 13421 transitions. [2024-11-19 22:52:05,027 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2024-11-19 22:52:05,027 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 22:52:05,027 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 22:52:05,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 22:52:05,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:05,228 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-19 22:52:05,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 22:52:05,228 INFO L85 PathProgramCache]: Analyzing trace with hash -440818926, now seen corresponding path program 1 times [2024-11-19 22:52:05,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 22:52:05,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637561877] [2024-11-19 22:52:05,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:05,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 22:52:05,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:05,637 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 13 proven. 75 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:05,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 22:52:05,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637561877] [2024-11-19 22:52:05,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637561877] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 22:52:05,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [885292624] [2024-11-19 22:52:05,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 22:52:05,664 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 22:52:05,664 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 22:52:05,666 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) [2024-11-19 22:52:05,666 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 22:52:05,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 22:52:05,777 INFO L255 TraceCheckSpWp]: Trace formula consists of 437 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-19 22:52:05,779 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 22:52:07,751 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:07,751 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 22:52:10,071 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 21 proven. 67 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 22:52:10,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [885292624] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 22:52:10,071 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 22:52:10,071 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 24, 25] total 57 [2024-11-19 22:52:10,071 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161762153] [2024-11-19 22:52:10,071 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 22:52:10,072 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 57 states [2024-11-19 22:52:10,072 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 22:52:10,072 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 57 interpolants. [2024-11-19 22:52:10,073 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=220, Invalid=2972, Unknown=0, NotChecked=0, Total=3192 [2024-11-19 22:52:10,073 INFO L87 Difference]: Start difference. First operand 11066 states and 13421 transitions. Second operand has 57 states, 57 states have (on average 5.456140350877193) internal successors, (311), 57 states have internal predecessors, (311), 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)