./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version c7c6ca5d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf2e081cc9f75dea6397073b82669a6a6f9f53b1ab4e083e4f8da1bc210df95c --- Real Ultimate output --- This is Ultimate 0.2.5-?-c7c6ca5-m [2024-11-08 15:36:32,491 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-08 15:36:32,557 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-08 15:36:32,563 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-08 15:36:32,564 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-08 15:36:32,592 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-08 15:36:32,594 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-08 15:36:32,594 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-08 15:36:32,594 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-08 15:36:32,595 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-08 15:36:32,596 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-08 15:36:32,596 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-08 15:36:32,597 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-08 15:36:32,598 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-08 15:36:32,599 INFO L153 SettingsManager]: * Use SBE=true [2024-11-08 15:36:32,599 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-08 15:36:32,600 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-08 15:36:32,600 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-08 15:36:32,600 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-08 15:36:32,600 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-08 15:36:32,601 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-08 15:36:32,604 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-08 15:36:32,605 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-08 15:36:32,605 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-08 15:36:32,605 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-08 15:36:32,605 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-08 15:36:32,606 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-08 15:36:32,606 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-08 15:36:32,606 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-08 15:36:32,606 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-08 15:36:32,607 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-08 15:36:32,607 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-08 15:36:32,607 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:36:32,607 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-08 15:36:32,607 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-08 15:36:32,608 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-08 15:36:32,608 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-08 15:36:32,608 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-08 15:36:32,609 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-08 15:36:32,609 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-08 15:36:32,609 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-08 15:36:32,610 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-08 15:36:32,611 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf2e081cc9f75dea6397073b82669a6a6f9f53b1ab4e083e4f8da1bc210df95c [2024-11-08 15:36:32,853 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-08 15:36:32,876 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-08 15:36:32,878 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-08 15:36:32,879 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-08 15:36:32,880 INFO L274 PluginConnector]: CDTParser initialized [2024-11-08 15:36:32,881 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2024-11-08 15:36:34,295 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-08 15:36:34,483 INFO L384 CDTParser]: Found 1 translation units. [2024-11-08 15:36:34,485 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2024-11-08 15:36:34,497 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc3ca53b/960bcc73409b4e709b98961b42c88a3f/FLAG5ad5cc196 [2024-11-08 15:36:34,511 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9bc3ca53b/960bcc73409b4e709b98961b42c88a3f [2024-11-08 15:36:34,513 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-08 15:36:34,514 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-08 15:36:34,516 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-08 15:36:34,516 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-08 15:36:34,522 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-08 15:36:34,523 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,526 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ff17a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34, skipping insertion in model container [2024-11-08 15:36:34,526 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,558 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-08 15:36:34,784 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2024-11-08 15:36:34,788 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:36:34,798 INFO L200 MainTranslator]: Completed pre-run [2024-11-08 15:36:34,853 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c[12820,12833] [2024-11-08 15:36:34,854 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-08 15:36:34,886 INFO L204 MainTranslator]: Completed translation [2024-11-08 15:36:34,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34 WrapperNode [2024-11-08 15:36:34,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-08 15:36:34,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-08 15:36:34,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-08 15:36:34,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-08 15:36:34,894 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,903 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,939 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 384 [2024-11-08 15:36:34,939 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-08 15:36:34,940 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-08 15:36:34,940 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-08 15:36:34,940 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-08 15:36:34,956 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,956 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,963 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,982 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]. [2024-11-08 15:36:34,982 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,982 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:34,991 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:35,001 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:35,008 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:35,010 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:35,014 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-08 15:36:35,016 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-08 15:36:35,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-08 15:36:35,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-08 15:36:35,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (1/1) ... [2024-11-08 15:36:35,023 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-08 15:36:35,034 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:36:35,056 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) [2024-11-08 15:36:35,059 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 [2024-11-08 15:36:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-08 15:36:35,106 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-08 15:36:35,107 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-08 15:36:35,107 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-08 15:36:35,244 INFO L238 CfgBuilder]: Building ICFG [2024-11-08 15:36:35,246 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-08 15:36:35,730 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-11-08 15:36:35,730 INFO L287 CfgBuilder]: Performing block encoding [2024-11-08 15:36:35,749 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-08 15:36:35,749 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-08 15:36:35,750 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:36:35 BoogieIcfgContainer [2024-11-08 15:36:35,750 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-08 15:36:35,752 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-08 15:36:35,753 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-08 15:36:35,756 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-08 15:36:35,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.11 03:36:34" (1/3) ... [2024-11-08 15:36:35,756 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138a735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:36:35, skipping insertion in model container [2024-11-08 15:36:35,756 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.11 03:36:34" (2/3) ... [2024-11-08 15:36:35,757 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@138a735a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.11 03:36:35, skipping insertion in model container [2024-11-08 15:36:35,757 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.11 03:36:35" (3/3) ... [2024-11-08 15:36:35,758 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.UNBOUNDED.pals.c [2024-11-08 15:36:35,772 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-08 15:36:35,772 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-08 15:36:35,831 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-08 15:36:35,836 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;@786cdd4f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-08 15:36:35,837 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-08 15:36:35,844 INFO L276 IsEmpty]: Start isEmpty. Operand has 104 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 103 states have internal predecessors, (178), 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) [2024-11-08 15:36:35,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 15:36:35,853 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:35,855 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] [2024-11-08 15:36:35,856 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:35,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:35,862 INFO L85 PathProgramCache]: Analyzing trace with hash -466507300, now seen corresponding path program 1 times [2024-11-08 15:36:35,870 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:35,871 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [725868740] [2024-11-08 15:36:35,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:35,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:36,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:36,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:36,130 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:36,130 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [725868740] [2024-11-08 15:36:36,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [725868740] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:36,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:36,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-08 15:36:36,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868427357] [2024-11-08 15:36:36,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:36,137 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-08 15:36:36,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:36,159 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-08 15:36:36,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 15:36:36,162 INFO L87 Difference]: Start difference. First operand has 104 states, 102 states have (on average 1.7450980392156863) internal successors, (178), 103 states have internal predecessors, (178), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2024-11-08 15:36:36,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:36,187 INFO L93 Difference]: Finished difference Result 167 states and 283 transitions. [2024-11-08 15:36:36,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-08 15:36:36,189 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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 33 [2024-11-08 15:36:36,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:36,197 INFO L225 Difference]: With dead ends: 167 [2024-11-08 15:36:36,197 INFO L226 Difference]: Without dead ends: 100 [2024-11-08 15:36:36,199 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-08 15:36:36,202 INFO L432 NwaCegarLoop]: 171 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:36,203 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 171 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:36,215 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-08 15:36:36,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-08 15:36:36,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.7272727272727273) internal successors, (171), 99 states have internal predecessors, (171), 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) [2024-11-08 15:36:36,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 171 transitions. [2024-11-08 15:36:36,233 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 171 transitions. Word has length 33 [2024-11-08 15:36:36,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:36,233 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 171 transitions. [2024-11-08 15:36:36,233 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 16.5) internal successors, (33), 2 states have internal predecessors, (33), 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) [2024-11-08 15:36:36,234 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 171 transitions. [2024-11-08 15:36:36,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-08 15:36:36,235 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:36,235 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] [2024-11-08 15:36:36,235 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-08 15:36:36,236 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:36,236 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:36,236 INFO L85 PathProgramCache]: Analyzing trace with hash -975980390, now seen corresponding path program 1 times [2024-11-08 15:36:36,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:36,237 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831662812] [2024-11-08 15:36:36,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:36,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:36,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:36,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:36,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [831662812] [2024-11-08 15:36:36,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [831662812] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:36,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:36,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-08 15:36:36,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260590483] [2024-11-08 15:36:36,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:36,530 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-08 15:36:36,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:36,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-08 15:36:36,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:36:36,533 INFO L87 Difference]: Start difference. First operand 100 states and 171 transitions. Second operand has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-08 15:36:36,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:36,627 INFO L93 Difference]: Finished difference Result 166 states and 276 transitions. [2024-11-08 15:36:36,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-08 15:36:36,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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 33 [2024-11-08 15:36:36,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:36,631 INFO L225 Difference]: With dead ends: 166 [2024-11-08 15:36:36,632 INFO L226 Difference]: Without dead ends: 100 [2024-11-08 15:36:36,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-08 15:36:36,633 INFO L432 NwaCegarLoop]: 169 mSDtfsCounter, 0 mSDsluCounter, 470 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 639 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:36,634 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 639 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:36,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2024-11-08 15:36:36,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2024-11-08 15:36:36,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 99 states have (on average 1.404040404040404) internal successors, (139), 99 states have internal predecessors, (139), 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) [2024-11-08 15:36:36,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 139 transitions. [2024-11-08 15:36:36,646 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 139 transitions. Word has length 33 [2024-11-08 15:36:36,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:36,646 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 139 transitions. [2024-11-08 15:36:36,646 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.6) internal successors, (33), 5 states have internal predecessors, (33), 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) [2024-11-08 15:36:36,647 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 139 transitions. [2024-11-08 15:36:36,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:36:36,651 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:36,651 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:36,651 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-08 15:36:36,651 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:36,652 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:36,652 INFO L85 PathProgramCache]: Analyzing trace with hash 1414656623, now seen corresponding path program 1 times [2024-11-08 15:36:36,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:36,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707303893] [2024-11-08 15:36:36,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:36,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:36,789 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:36,790 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:36,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1707303893] [2024-11-08 15:36:36,790 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1707303893] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:36,790 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:36,791 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:36,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107607191] [2024-11-08 15:36:36,791 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:36,792 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:36,792 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:36,793 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:36,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:36,794 INFO L87 Difference]: Start difference. First operand 100 states and 139 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) [2024-11-08 15:36:36,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:36,833 INFO L93 Difference]: Finished difference Result 216 states and 327 transitions. [2024-11-08 15:36:36,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:36,834 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 [2024-11-08 15:36:36,834 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:36,837 INFO L225 Difference]: With dead ends: 216 [2024-11-08 15:36:36,837 INFO L226 Difference]: Without dead ends: 154 [2024-11-08 15:36:36,838 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 [2024-11-08 15:36:36,839 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 77 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 278 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 [2024-11-08 15:36:36,839 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 278 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:36,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2024-11-08 15:36:36,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 152. [2024-11-08 15:36:36,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 151 states have (on average 1.4834437086092715) internal successors, (224), 151 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) [2024-11-08 15:36:36,854 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 224 transitions. [2024-11-08 15:36:36,854 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 224 transitions. Word has length 64 [2024-11-08 15:36:36,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:36,855 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 224 transitions. [2024-11-08 15:36:36,855 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) [2024-11-08 15:36:36,855 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 224 transitions. [2024-11-08 15:36:36,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-11-08 15:36:36,857 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:36,857 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:36,857 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-08 15:36:36,857 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:36,858 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:36,858 INFO L85 PathProgramCache]: Analyzing trace with hash -402790480, now seen corresponding path program 1 times [2024-11-08 15:36:36,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:36,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868874732] [2024-11-08 15:36:36,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:36,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:37,086 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:37,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:37,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868874732] [2024-11-08 15:36:37,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868874732] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:37,088 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:37,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:37,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430678851] [2024-11-08 15:36:37,088 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:37,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:37,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:37,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:37,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:37,091 INFO L87 Difference]: Start difference. First operand 152 states and 224 transitions. Second operand has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-11-08 15:36:37,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:37,267 INFO L93 Difference]: Finished difference Result 836 states and 1340 transitions. [2024-11-08 15:36:37,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:37,267 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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 [2024-11-08 15:36:37,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:37,272 INFO L225 Difference]: With dead ends: 836 [2024-11-08 15:36:37,273 INFO L226 Difference]: Without dead ends: 722 [2024-11-08 15:36:37,274 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:37,275 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 1260 mSDsluCounter, 743 mSDsCounter, 0 mSdLazyCounter, 58 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1260 SdHoareTripleChecker+Valid, 878 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 [2024-11-08 15:36:37,275 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1260 Valid, 878 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 58 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:37,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 722 states. [2024-11-08 15:36:37,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 722 to 264. [2024-11-08 15:36:37,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 263 states have (on average 1.5399239543726235) internal successors, (405), 263 states have internal predecessors, (405), 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) [2024-11-08 15:36:37,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 405 transitions. [2024-11-08 15:36:37,302 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 405 transitions. Word has length 64 [2024-11-08 15:36:37,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:37,302 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 405 transitions. [2024-11-08 15:36:37,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.142857142857142) internal successors, (64), 7 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) [2024-11-08 15:36:37,303 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 405 transitions. [2024-11-08 15:36:37,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-11-08 15:36:37,304 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:37,305 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:37,305 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-08 15:36:37,305 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:37,306 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:37,306 INFO L85 PathProgramCache]: Analyzing trace with hash 15073731, now seen corresponding path program 1 times [2024-11-08 15:36:37,306 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:37,306 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78553638] [2024-11-08 15:36:37,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:37,306 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:37,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:37,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:37,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:37,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78553638] [2024-11-08 15:36:37,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78553638] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:37,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-08 15:36:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550713568] [2024-11-08 15:36:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:37,736 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-08 15:36:37,736 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:37,736 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-08 15:36:37,736 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:36:37,736 INFO L87 Difference]: Start difference. First operand 264 states and 405 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2024-11-08 15:36:37,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:37,805 INFO L93 Difference]: Finished difference Result 278 states and 422 transitions. [2024-11-08 15:36:37,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-08 15:36:37,806 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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 [2024-11-08 15:36:37,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:37,809 INFO L225 Difference]: With dead ends: 278 [2024-11-08 15:36:37,809 INFO L226 Difference]: Without dead ends: 276 [2024-11-08 15:36:37,810 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-08 15:36:37,811 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 0 mSDsluCounter, 786 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:37,811 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 919 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:37,812 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 276 states. [2024-11-08 15:36:37,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 276 to 276. [2024-11-08 15:36:37,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 276 states, 275 states have (on average 1.5163636363636364) internal successors, (417), 275 states have internal predecessors, (417), 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) [2024-11-08 15:36:37,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 276 states to 276 states and 417 transitions. [2024-11-08 15:36:37,822 INFO L78 Accepts]: Start accepts. Automaton has 276 states and 417 transitions. Word has length 65 [2024-11-08 15:36:37,822 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:37,822 INFO L471 AbstractCegarLoop]: Abstraction has 276 states and 417 transitions. [2024-11-08 15:36:37,822 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 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) [2024-11-08 15:36:37,823 INFO L276 IsEmpty]: Start isEmpty. Operand 276 states and 417 transitions. [2024-11-08 15:36:37,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-11-08 15:36:37,824 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:37,824 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:37,824 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-08 15:36:37,825 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:37,825 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:37,825 INFO L85 PathProgramCache]: Analyzing trace with hash 519864296, now seen corresponding path program 1 times [2024-11-08 15:36:37,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:37,827 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579814938] [2024-11-08 15:36:37,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:37,828 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:37,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:37,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:37,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:37,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579814938] [2024-11-08 15:36:37,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579814938] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:37,936 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:37,936 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:37,936 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571054419] [2024-11-08 15:36:37,936 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:37,936 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:37,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:37,937 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:37,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:37,937 INFO L87 Difference]: Start difference. First operand 276 states and 417 transitions. Second operand has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 15:36:37,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:37,966 INFO L93 Difference]: Finished difference Result 722 states and 1125 transitions. [2024-11-08 15:36:37,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:37,967 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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 [2024-11-08 15:36:37,967 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:37,969 INFO L225 Difference]: With dead ends: 722 [2024-11-08 15:36:37,969 INFO L226 Difference]: Without dead ends: 484 [2024-11-08 15:36:37,970 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 [2024-11-08 15:36:37,973 INFO L432 NwaCegarLoop]: 136 mSDtfsCounter, 65 mSDsluCounter, 96 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:37,973 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 232 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:37,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 484 states. [2024-11-08 15:36:37,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 484 to 478. [2024-11-08 15:36:37,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 478 states, 477 states have (on average 1.5366876310272537) internal successors, (733), 477 states have internal predecessors, (733), 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) [2024-11-08 15:36:37,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 478 states to 478 states and 733 transitions. [2024-11-08 15:36:37,992 INFO L78 Accepts]: Start accepts. Automaton has 478 states and 733 transitions. Word has length 66 [2024-11-08 15:36:37,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:37,992 INFO L471 AbstractCegarLoop]: Abstraction has 478 states and 733 transitions. [2024-11-08 15:36:37,994 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.0) internal successors, (66), 3 states have internal predecessors, (66), 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) [2024-11-08 15:36:37,995 INFO L276 IsEmpty]: Start isEmpty. Operand 478 states and 733 transitions. [2024-11-08 15:36:37,997 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:36:38,001 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:38,001 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:38,001 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-08 15:36:38,001 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:38,002 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:38,002 INFO L85 PathProgramCache]: Analyzing trace with hash -2098186532, now seen corresponding path program 1 times [2024-11-08 15:36:38,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:38,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1667166788] [2024-11-08 15:36:38,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:38,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:38,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:38,078 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:38,080 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:38,080 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1667166788] [2024-11-08 15:36:38,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1667166788] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:38,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:38,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:38,081 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1506580276] [2024-11-08 15:36:38,081 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:38,081 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:38,082 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:38,083 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:38,083 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:38,083 INFO L87 Difference]: Start difference. First operand 478 states and 733 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:38,112 INFO L93 Difference]: Finished difference Result 1294 states and 2011 transitions. [2024-11-08 15:36:38,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:38,113 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 [2024-11-08 15:36:38,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:38,118 INFO L225 Difference]: With dead ends: 1294 [2024-11-08 15:36:38,118 INFO L226 Difference]: Without dead ends: 854 [2024-11-08 15:36:38,119 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 [2024-11-08 15:36:38,121 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 73 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 276 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 [2024-11-08 15:36:38,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 276 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:38,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2024-11-08 15:36:38,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 852. [2024-11-08 15:36:38,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 852 states, 851 states have (on average 1.535840188014101) internal successors, (1307), 851 states have internal predecessors, (1307), 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) [2024-11-08 15:36:38,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 852 states to 852 states and 1307 transitions. [2024-11-08 15:36:38,147 INFO L78 Accepts]: Start accepts. Automaton has 852 states and 1307 transitions. Word has length 67 [2024-11-08 15:36:38,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:38,147 INFO L471 AbstractCegarLoop]: Abstraction has 852 states and 1307 transitions. [2024-11-08 15:36:38,148 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,148 INFO L276 IsEmpty]: Start isEmpty. Operand 852 states and 1307 transitions. [2024-11-08 15:36:38,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:36:38,149 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:38,149 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:38,149 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-08 15:36:38,149 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:38,150 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:38,150 INFO L85 PathProgramCache]: Analyzing trace with hash -961078116, now seen corresponding path program 1 times [2024-11-08 15:36:38,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:38,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440117290] [2024-11-08 15:36:38,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:38,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:38,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:38,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:38,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:38,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [440117290] [2024-11-08 15:36:38,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [440117290] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:38,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:38,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:38,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172426060] [2024-11-08 15:36:38,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:38,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:38,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:38,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:38,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:38,228 INFO L87 Difference]: Start difference. First operand 852 states and 1307 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:38,280 INFO L93 Difference]: Finished difference Result 2352 states and 3621 transitions. [2024-11-08 15:36:38,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:38,281 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 [2024-11-08 15:36:38,281 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:38,288 INFO L225 Difference]: With dead ends: 2352 [2024-11-08 15:36:38,288 INFO L226 Difference]: Without dead ends: 1538 [2024-11-08 15:36:38,290 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 [2024-11-08 15:36:38,291 INFO L432 NwaCegarLoop]: 186 mSDtfsCounter, 81 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 292 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 [2024-11-08 15:36:38,291 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 292 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:38,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1538 states. [2024-11-08 15:36:38,326 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1538 to 1536. [2024-11-08 15:36:38,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1536 states, 1535 states have (on average 1.521172638436482) internal successors, (2335), 1535 states have internal predecessors, (2335), 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) [2024-11-08 15:36:38,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1536 states to 1536 states and 2335 transitions. [2024-11-08 15:36:38,336 INFO L78 Accepts]: Start accepts. Automaton has 1536 states and 2335 transitions. Word has length 67 [2024-11-08 15:36:38,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:38,337 INFO L471 AbstractCegarLoop]: Abstraction has 1536 states and 2335 transitions. [2024-11-08 15:36:38,337 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,337 INFO L276 IsEmpty]: Start isEmpty. Operand 1536 states and 2335 transitions. [2024-11-08 15:36:38,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-11-08 15:36:38,339 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:38,339 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:38,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-08 15:36:38,339 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:38,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:38,340 INFO L85 PathProgramCache]: Analyzing trace with hash -1376131204, now seen corresponding path program 1 times [2024-11-08 15:36:38,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:38,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090382678] [2024-11-08 15:36:38,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:38,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:38,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:38,415 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:38,416 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:38,416 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090382678] [2024-11-08 15:36:38,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090382678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:38,416 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:38,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:38,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643828933] [2024-11-08 15:36:38,417 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:38,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:38,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:38,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:38,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:38,418 INFO L87 Difference]: Start difference. First operand 1536 states and 2335 transitions. Second operand has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:38,489 INFO L93 Difference]: Finished difference Result 4276 states and 6481 transitions. [2024-11-08 15:36:38,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:38,491 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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 [2024-11-08 15:36:38,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:38,500 INFO L225 Difference]: With dead ends: 4276 [2024-11-08 15:36:38,500 INFO L226 Difference]: Without dead ends: 2778 [2024-11-08 15:36:38,502 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 [2024-11-08 15:36:38,503 INFO L432 NwaCegarLoop]: 203 mSDtfsCounter, 85 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 305 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 [2024-11-08 15:36:38,504 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 305 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:38,506 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2778 states. [2024-11-08 15:36:38,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2778 to 2776. [2024-11-08 15:36:38,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2776 states, 2775 states have (on average 1.495855855855856) internal successors, (4151), 2775 states have internal predecessors, (4151), 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) [2024-11-08 15:36:38,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2776 states to 2776 states and 4151 transitions. [2024-11-08 15:36:38,575 INFO L78 Accepts]: Start accepts. Automaton has 2776 states and 4151 transitions. Word has length 67 [2024-11-08 15:36:38,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:38,576 INFO L471 AbstractCegarLoop]: Abstraction has 2776 states and 4151 transitions. [2024-11-08 15:36:38,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.333333333333332) internal successors, (67), 3 states have internal predecessors, (67), 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) [2024-11-08 15:36:38,576 INFO L276 IsEmpty]: Start isEmpty. Operand 2776 states and 4151 transitions. [2024-11-08 15:36:38,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-08 15:36:38,577 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:38,577 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:38,577 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-08 15:36:38,578 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:38,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:38,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1602930238, now seen corresponding path program 1 times [2024-11-08 15:36:38,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:38,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730041283] [2024-11-08 15:36:38,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:38,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:38,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:38,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:38,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:38,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730041283] [2024-11-08 15:36:38,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730041283] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:38,647 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:38,649 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:38,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903079043] [2024-11-08 15:36:38,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:38,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:38,650 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:38,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:38,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:38,650 INFO L87 Difference]: Start difference. First operand 2776 states and 4151 transitions. Second operand has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-08 15:36:38,729 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:38,729 INFO L93 Difference]: Finished difference Result 5471 states and 8221 transitions. [2024-11-08 15:36:38,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:38,730 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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 68 [2024-11-08 15:36:38,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:38,744 INFO L225 Difference]: With dead ends: 5471 [2024-11-08 15:36:38,744 INFO L226 Difference]: Without dead ends: 3964 [2024-11-08 15:36:38,749 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 [2024-11-08 15:36:38,750 INFO L432 NwaCegarLoop]: 216 mSDtfsCounter, 86 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 314 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 [2024-11-08 15:36:38,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 314 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:38,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3964 states. [2024-11-08 15:36:38,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3964 to 3962. [2024-11-08 15:36:38,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3962 states, 3961 states have (on average 1.484726079272911) internal successors, (5881), 3961 states have internal predecessors, (5881), 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) [2024-11-08 15:36:38,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3962 states to 3962 states and 5881 transitions. [2024-11-08 15:36:38,880 INFO L78 Accepts]: Start accepts. Automaton has 3962 states and 5881 transitions. Word has length 68 [2024-11-08 15:36:38,880 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:38,880 INFO L471 AbstractCegarLoop]: Abstraction has 3962 states and 5881 transitions. [2024-11-08 15:36:38,880 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 22.666666666666668) internal successors, (68), 3 states have internal predecessors, (68), 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) [2024-11-08 15:36:38,881 INFO L276 IsEmpty]: Start isEmpty. Operand 3962 states and 5881 transitions. [2024-11-08 15:36:38,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 15:36:38,883 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:38,883 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:38,884 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-08 15:36:38,884 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:38,884 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:38,884 INFO L85 PathProgramCache]: Analyzing trace with hash 696202352, now seen corresponding path program 1 times [2024-11-08 15:36:38,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:38,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568955465] [2024-11-08 15:36:38,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:38,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:38,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:39,056 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2024-11-08 15:36:39,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:39,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568955465] [2024-11-08 15:36:39,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568955465] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:39,057 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:39,057 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:39,058 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615433513] [2024-11-08 15:36:39,058 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:39,058 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:39,058 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:39,059 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:39,059 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:39,059 INFO L87 Difference]: Start difference. First operand 3962 states and 5881 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-08 15:36:39,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:39,340 INFO L93 Difference]: Finished difference Result 13206 states and 19839 transitions. [2024-11-08 15:36:39,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:39,341 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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 94 [2024-11-08 15:36:39,341 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:39,378 INFO L225 Difference]: With dead ends: 13206 [2024-11-08 15:36:39,379 INFO L226 Difference]: Without dead ends: 11220 [2024-11-08 15:36:39,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:39,385 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 1005 mSDsluCounter, 656 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1005 SdHoareTripleChecker+Valid, 891 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:39,385 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1005 Valid, 891 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:39,395 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11220 states. [2024-11-08 15:36:39,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11220 to 5898. [2024-11-08 15:36:39,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5898 states, 5897 states have (on average 1.4856706800067832) internal successors, (8761), 5897 states have internal predecessors, (8761), 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) [2024-11-08 15:36:39,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5898 states to 5898 states and 8761 transitions. [2024-11-08 15:36:39,655 INFO L78 Accepts]: Start accepts. Automaton has 5898 states and 8761 transitions. Word has length 94 [2024-11-08 15:36:39,655 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:39,656 INFO L471 AbstractCegarLoop]: Abstraction has 5898 states and 8761 transitions. [2024-11-08 15:36:39,656 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 7 states have internal predecessors, (81), 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) [2024-11-08 15:36:39,656 INFO L276 IsEmpty]: Start isEmpty. Operand 5898 states and 8761 transitions. [2024-11-08 15:36:39,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 15:36:39,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:39,662 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:39,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-08 15:36:39,662 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:39,663 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:39,663 INFO L85 PathProgramCache]: Analyzing trace with hash -589163919, now seen corresponding path program 1 times [2024-11-08 15:36:39,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:39,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [387884226] [2024-11-08 15:36:39,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:39,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:39,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:39,842 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-08 15:36:39,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:39,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [387884226] [2024-11-08 15:36:39,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [387884226] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:39,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:39,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:39,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517210114] [2024-11-08 15:36:39,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:39,844 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:39,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:39,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:39,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:39,847 INFO L87 Difference]: Start difference. First operand 5898 states and 8761 transitions. Second operand has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-08 15:36:40,177 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:40,178 INFO L93 Difference]: Finished difference Result 15142 states and 22719 transitions. [2024-11-08 15:36:40,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:40,179 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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 94 [2024-11-08 15:36:40,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:40,220 INFO L225 Difference]: With dead ends: 15142 [2024-11-08 15:36:40,222 INFO L226 Difference]: Without dead ends: 13156 [2024-11-08 15:36:40,229 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:40,229 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 953 mSDsluCounter, 669 mSDsCounter, 0 mSdLazyCounter, 66 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 953 SdHoareTripleChecker+Valid, 904 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 66 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:40,230 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [953 Valid, 904 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 66 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:40,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13156 states. [2024-11-08 15:36:40,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13156 to 7834. [2024-11-08 15:36:40,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7834 states, 7833 states have (on average 1.486148346738159) internal successors, (11641), 7833 states have internal predecessors, (11641), 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) [2024-11-08 15:36:40,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7834 states to 7834 states and 11641 transitions. [2024-11-08 15:36:40,502 INFO L78 Accepts]: Start accepts. Automaton has 7834 states and 11641 transitions. Word has length 94 [2024-11-08 15:36:40,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:40,502 INFO L471 AbstractCegarLoop]: Abstraction has 7834 states and 11641 transitions. [2024-11-08 15:36:40,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.428571428571429) internal successors, (80), 7 states have internal predecessors, (80), 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) [2024-11-08 15:36:40,503 INFO L276 IsEmpty]: Start isEmpty. Operand 7834 states and 11641 transitions. [2024-11-08 15:36:40,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 15:36:40,506 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:40,507 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:40,507 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-08 15:36:40,507 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:40,508 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:40,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1156479503, now seen corresponding path program 1 times [2024-11-08 15:36:40,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:40,508 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113188377] [2024-11-08 15:36:40,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:40,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:40,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:40,682 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-08 15:36:40,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:40,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113188377] [2024-11-08 15:36:40,684 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113188377] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:40,684 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:40,684 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:40,684 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420760180] [2024-11-08 15:36:40,684 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:40,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:40,685 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:40,685 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:40,685 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:40,686 INFO L87 Difference]: Start difference. First operand 7834 states and 11641 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:36:41,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:41,026 INFO L93 Difference]: Finished difference Result 17078 states and 25599 transitions. [2024-11-08 15:36:41,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:41,030 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 94 [2024-11-08 15:36:41,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:41,107 INFO L225 Difference]: With dead ends: 17078 [2024-11-08 15:36:41,107 INFO L226 Difference]: Without dead ends: 15092 [2024-11-08 15:36:41,115 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:41,116 INFO L432 NwaCegarLoop]: 235 mSDtfsCounter, 844 mSDsluCounter, 793 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1028 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:41,116 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1028 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:41,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15092 states. [2024-11-08 15:36:41,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15092 to 9770. [2024-11-08 15:36:41,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9770 states, 9769 states have (on average 1.4864366874808066) internal successors, (14521), 9769 states have internal predecessors, (14521), 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) [2024-11-08 15:36:41,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9770 states to 9770 states and 14521 transitions. [2024-11-08 15:36:41,477 INFO L78 Accepts]: Start accepts. Automaton has 9770 states and 14521 transitions. Word has length 94 [2024-11-08 15:36:41,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:41,478 INFO L471 AbstractCegarLoop]: Abstraction has 9770 states and 14521 transitions. [2024-11-08 15:36:41,478 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-08 15:36:41,478 INFO L276 IsEmpty]: Start isEmpty. Operand 9770 states and 14521 transitions. [2024-11-08 15:36:41,482 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-11-08 15:36:41,482 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:41,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:41,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-08 15:36:41,483 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:41,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:41,484 INFO L85 PathProgramCache]: Analyzing trace with hash 741426415, now seen corresponding path program 1 times [2024-11-08 15:36:41,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:41,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908757384] [2024-11-08 15:36:41,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:41,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:41,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:41,718 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-08 15:36:41,718 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:41,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908757384] [2024-11-08 15:36:41,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908757384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:41,719 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:41,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:41,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1798025410] [2024-11-08 15:36:41,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:41,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:41,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:41,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:41,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:41,721 INFO L87 Difference]: Start difference. First operand 9770 states and 14521 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2024-11-08 15:36:42,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:42,038 INFO L93 Difference]: Finished difference Result 19014 states and 28479 transitions. [2024-11-08 15:36:42,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:42,039 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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 94 [2024-11-08 15:36:42,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:42,070 INFO L225 Difference]: With dead ends: 19014 [2024-11-08 15:36:42,070 INFO L226 Difference]: Without dead ends: 17028 [2024-11-08 15:36:42,079 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:42,079 INFO L432 NwaCegarLoop]: 234 mSDtfsCounter, 888 mSDsluCounter, 756 mSDsCounter, 0 mSdLazyCounter, 72 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 888 SdHoareTripleChecker+Valid, 990 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 72 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:42,080 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [888 Valid, 990 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 72 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:42,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17028 states. [2024-11-08 15:36:42,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17028 to 11706. [2024-11-08 15:36:42,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 1.486629645450662) internal successors, (17401), 11705 states have internal predecessors, (17401), 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) [2024-11-08 15:36:42,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 17401 transitions. [2024-11-08 15:36:42,480 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 17401 transitions. Word has length 94 [2024-11-08 15:36:42,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:42,481 INFO L471 AbstractCegarLoop]: Abstraction has 11706 states and 17401 transitions. [2024-11-08 15:36:42,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 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) [2024-11-08 15:36:42,481 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 17401 transitions. [2024-11-08 15:36:42,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 15:36:42,486 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:42,487 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:42,487 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-08 15:36:42,487 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:42,487 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:42,488 INFO L85 PathProgramCache]: Analyzing trace with hash 1920504973, now seen corresponding path program 1 times [2024-11-08 15:36:42,488 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:42,488 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111950927] [2024-11-08 15:36:42,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:42,488 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:42,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:42,620 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 22 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:42,621 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:42,621 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111950927] [2024-11-08 15:36:42,621 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111950927] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:42,621 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:42,621 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:42,621 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15511681] [2024-11-08 15:36:42,621 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:42,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:42,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:42,622 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:42,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:42,623 INFO L87 Difference]: Start difference. First operand 11706 states and 17401 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:42,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:42,878 INFO L93 Difference]: Finished difference Result 23374 states and 34763 transitions. [2024-11-08 15:36:42,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:42,879 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2024-11-08 15:36:42,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:42,900 INFO L225 Difference]: With dead ends: 23374 [2024-11-08 15:36:42,900 INFO L226 Difference]: Without dead ends: 11708 [2024-11-08 15:36:42,912 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 [2024-11-08 15:36:42,913 INFO L432 NwaCegarLoop]: 182 mSDtfsCounter, 68 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 306 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 [2024-11-08 15:36:42,913 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 306 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11708 states. [2024-11-08 15:36:43,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11708 to 11706. [2024-11-08 15:36:43,159 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11706 states, 11705 states have (on average 1.4743272105937633) internal successors, (17257), 11705 states have internal predecessors, (17257), 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) [2024-11-08 15:36:43,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11706 states to 11706 states and 17257 transitions. [2024-11-08 15:36:43,182 INFO L78 Accepts]: Start accepts. Automaton has 11706 states and 17257 transitions. Word has length 95 [2024-11-08 15:36:43,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:43,182 INFO L471 AbstractCegarLoop]: Abstraction has 11706 states and 17257 transitions. [2024-11-08 15:36:43,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:43,183 INFO L276 IsEmpty]: Start isEmpty. Operand 11706 states and 17257 transitions. [2024-11-08 15:36:43,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 15:36:43,185 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:43,186 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:43,186 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-08 15:36:43,186 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:43,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:43,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1956021108, now seen corresponding path program 1 times [2024-11-08 15:36:43,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:43,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778649722] [2024-11-08 15:36:43,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:43,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:43,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:43,353 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:43,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:43,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778649722] [2024-11-08 15:36:43,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778649722] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:43,354 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:43,354 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:43,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125531831] [2024-11-08 15:36:43,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:43,355 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:43,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:43,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:43,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:43,356 INFO L87 Difference]: Start difference. First operand 11706 states and 17257 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:43,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:43,487 INFO L93 Difference]: Finished difference Result 17542 states and 25867 transitions. [2024-11-08 15:36:43,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:43,488 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2024-11-08 15:36:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:43,499 INFO L225 Difference]: With dead ends: 17542 [2024-11-08 15:36:43,500 INFO L226 Difference]: Without dead ends: 5876 [2024-11-08 15:36:43,513 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 [2024-11-08 15:36:43,514 INFO L432 NwaCegarLoop]: 173 mSDtfsCounter, 62 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 287 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 [2024-11-08 15:36:43,514 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 287 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:43,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2024-11-08 15:36:43,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 5874. [2024-11-08 15:36:43,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5874 states, 5873 states have (on average 1.4604120551677167) internal successors, (8577), 5873 states have internal predecessors, (8577), 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) [2024-11-08 15:36:43,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5874 states to 5874 states and 8577 transitions. [2024-11-08 15:36:43,690 INFO L78 Accepts]: Start accepts. Automaton has 5874 states and 8577 transitions. Word has length 95 [2024-11-08 15:36:43,691 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:43,691 INFO L471 AbstractCegarLoop]: Abstraction has 5874 states and 8577 transitions. [2024-11-08 15:36:43,691 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:43,691 INFO L276 IsEmpty]: Start isEmpty. Operand 5874 states and 8577 transitions. [2024-11-08 15:36:43,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 15:36:43,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:43,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:43,694 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-08 15:36:43,694 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:43,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:43,695 INFO L85 PathProgramCache]: Analyzing trace with hash -556516341, now seen corresponding path program 1 times [2024-11-08 15:36:43,695 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:43,695 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1762689212] [2024-11-08 15:36:43,695 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:43,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:43,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:43,823 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:43,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:43,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1762689212] [2024-11-08 15:36:43,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1762689212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:43,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:43,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-08 15:36:43,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733733826] [2024-11-08 15:36:43,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:43,825 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-08 15:36:43,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:43,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-08 15:36:43,826 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-08 15:36:43,826 INFO L87 Difference]: Start difference. First operand 5874 states and 8577 transitions. Second operand has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:43,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:43,898 INFO L93 Difference]: Finished difference Result 8794 states and 12847 transitions. [2024-11-08 15:36:43,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-08 15:36:43,899 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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 95 [2024-11-08 15:36:43,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:43,905 INFO L225 Difference]: With dead ends: 8794 [2024-11-08 15:36:43,905 INFO L226 Difference]: Without dead ends: 2960 [2024-11-08 15:36:43,910 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 [2024-11-08 15:36:43,911 INFO L432 NwaCegarLoop]: 161 mSDtfsCounter, 56 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 265 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 [2024-11-08 15:36:43,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 265 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-08 15:36:43,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2960 states. [2024-11-08 15:36:43,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2960 to 2958. [2024-11-08 15:36:43,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2958 states, 2957 states have (on average 1.4450456543794385) internal successors, (4273), 2957 states have internal predecessors, (4273), 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) [2024-11-08 15:36:43,995 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2958 states to 2958 states and 4273 transitions. [2024-11-08 15:36:43,996 INFO L78 Accepts]: Start accepts. Automaton has 2958 states and 4273 transitions. Word has length 95 [2024-11-08 15:36:43,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:43,996 INFO L471 AbstractCegarLoop]: Abstraction has 2958 states and 4273 transitions. [2024-11-08 15:36:43,997 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.666666666666668) internal successors, (95), 3 states have internal predecessors, (95), 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) [2024-11-08 15:36:43,997 INFO L276 IsEmpty]: Start isEmpty. Operand 2958 states and 4273 transitions. [2024-11-08 15:36:43,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2024-11-08 15:36:43,999 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:43,999 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:43,999 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-08 15:36:43,999 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:43,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:44,000 INFO L85 PathProgramCache]: Analyzing trace with hash -170268022, now seen corresponding path program 1 times [2024-11-08 15:36:44,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:44,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683805542] [2024-11-08 15:36:44,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:44,001 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:44,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:44,578 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 14 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:44,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683805542] [2024-11-08 15:36:44,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683805542] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:36:44,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [309986977] [2024-11-08 15:36:44,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:44,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:36:44,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:36:44,581 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) [2024-11-08 15:36:44,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-08 15:36:44,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:44,743 INFO L255 TraceCheckSpWp]: Trace formula consists of 427 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-08 15:36:44,749 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:36:45,475 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:45,475 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:36:46,087 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 3 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:46,088 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [309986977] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:36:46,088 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:36:46,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 23 [2024-11-08 15:36:46,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937359742] [2024-11-08 15:36:46,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:36:46,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-08 15:36:46,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:46,089 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-08 15:36:46,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-08 15:36:46,090 INFO L87 Difference]: Start difference. First operand 2958 states and 4273 transitions. Second operand has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 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) [2024-11-08 15:36:52,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:52,226 INFO L93 Difference]: Finished difference Result 28973 states and 41538 transitions. [2024-11-08 15:36:52,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 89 states. [2024-11-08 15:36:52,227 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 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 95 [2024-11-08 15:36:52,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:52,273 INFO L225 Difference]: With dead ends: 28973 [2024-11-08 15:36:52,274 INFO L226 Difference]: Without dead ends: 26055 [2024-11-08 15:36:52,285 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 285 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 108 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4157 ImplicationChecksByTransitivity, 4.3s TimeCoverageRelationStatistics Valid=2577, Invalid=9413, Unknown=0, NotChecked=0, Total=11990 [2024-11-08 15:36:52,285 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 7823 mSDsluCounter, 1875 mSDsCounter, 0 mSdLazyCounter, 1851 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7823 SdHoareTripleChecker+Valid, 2031 SdHoareTripleChecker+Invalid, 2000 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 1851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:52,285 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7823 Valid, 2031 Invalid, 2000 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 1851 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-11-08 15:36:52,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26055 states. [2024-11-08 15:36:53,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26055 to 21913. [2024-11-08 15:36:53,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21913 states, 21912 states have (on average 1.410460021905805) internal successors, (30906), 21912 states have internal predecessors, (30906), 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) [2024-11-08 15:36:53,109 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21913 states to 21913 states and 30906 transitions. [2024-11-08 15:36:53,112 INFO L78 Accepts]: Start accepts. Automaton has 21913 states and 30906 transitions. Word has length 95 [2024-11-08 15:36:53,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:53,113 INFO L471 AbstractCegarLoop]: Abstraction has 21913 states and 30906 transitions. [2024-11-08 15:36:53,113 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 11.91304347826087) internal successors, (274), 23 states have internal predecessors, (274), 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) [2024-11-08 15:36:53,114 INFO L276 IsEmpty]: Start isEmpty. Operand 21913 states and 30906 transitions. [2024-11-08 15:36:53,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2024-11-08 15:36:53,117 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:53,117 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:53,141 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-08 15:36:53,318 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,SelfDestructingSolverStorable17 [2024-11-08 15:36:53,318 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:53,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:53,319 INFO L85 PathProgramCache]: Analyzing trace with hash -1031424495, now seen corresponding path program 1 times [2024-11-08 15:36:53,319 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:53,319 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365720890] [2024-11-08 15:36:53,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:53,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:53,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:53,579 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-08 15:36:53,580 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:53,580 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365720890] [2024-11-08 15:36:53,580 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365720890] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-08 15:36:53,580 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-08 15:36:53,580 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-08 15:36:53,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262027053] [2024-11-08 15:36:53,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-08 15:36:53,581 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-08 15:36:53,581 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:53,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-08 15:36:53,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-08 15:36:53,582 INFO L87 Difference]: Start difference. First operand 21913 states and 30906 transitions. Second operand has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-08 15:36:54,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:36:54,506 INFO L93 Difference]: Finished difference Result 40771 states and 57926 transitions. [2024-11-08 15:36:54,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-08 15:36:54,507 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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 96 [2024-11-08 15:36:54,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:36:54,570 INFO L225 Difference]: With dead ends: 40771 [2024-11-08 15:36:54,571 INFO L226 Difference]: Without dead ends: 36983 [2024-11-08 15:36:54,581 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-11-08 15:36:54,582 INFO L432 NwaCegarLoop]: 243 mSDtfsCounter, 786 mSDsluCounter, 834 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 1077 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-08 15:36:54,582 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 1077 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-08 15:36:54,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36983 states. [2024-11-08 15:36:55,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36983 to 25553. [2024-11-08 15:36:55,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25553 states, 25552 states have (on average 1.4098700688791483) internal successors, (36025), 25552 states have internal predecessors, (36025), 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) [2024-11-08 15:36:55,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25553 states to 25553 states and 36025 transitions. [2024-11-08 15:36:55,191 INFO L78 Accepts]: Start accepts. Automaton has 25553 states and 36025 transitions. Word has length 96 [2024-11-08 15:36:55,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:36:55,191 INFO L471 AbstractCegarLoop]: Abstraction has 25553 states and 36025 transitions. [2024-11-08 15:36:55,192 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.571428571428571) internal successors, (95), 7 states have internal predecessors, (95), 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) [2024-11-08 15:36:55,192 INFO L276 IsEmpty]: Start isEmpty. Operand 25553 states and 36025 transitions. [2024-11-08 15:36:55,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 15:36:55,193 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:36:55,193 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:36:55,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-08 15:36:55,194 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:36:55,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:36:55,194 INFO L85 PathProgramCache]: Analyzing trace with hash -560588554, now seen corresponding path program 1 times [2024-11-08 15:36:55,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:36:55,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [325373824] [2024-11-08 15:36:55,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:55,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:36:55,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:56,574 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:56,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:36:56,574 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [325373824] [2024-11-08 15:36:56,574 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [325373824] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:36:56,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1357859984] [2024-11-08 15:36:56,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:36:56,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:36:56,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:36:56,576 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) [2024-11-08 15:36:56,577 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-08 15:36:56,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:36:56,711 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 15:36:56,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:36:57,208 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:57,208 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:36:58,026 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:36:58,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1357859984] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:36:58,027 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:36:58,027 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-08 15:36:58,027 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1800673414] [2024-11-08 15:36:58,027 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:36:58,028 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-08 15:36:58,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:36:58,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-08 15:36:58,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=700, Unknown=0, NotChecked=0, Total=812 [2024-11-08 15:36:58,029 INFO L87 Difference]: Start difference. First operand 25553 states and 36025 transitions. Second operand has 29 states, 29 states have (on average 9.241379310344827) internal successors, (268), 28 states have internal predecessors, (268), 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) [2024-11-08 15:37:06,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:06,404 INFO L93 Difference]: Finished difference Result 287252 states and 406430 transitions. [2024-11-08 15:37:06,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 88 states. [2024-11-08 15:37:06,405 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 9.241379310344827) internal successors, (268), 28 states have internal predecessors, (268), 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 99 [2024-11-08 15:37:06,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:07,032 INFO L225 Difference]: With dead ends: 287252 [2024-11-08 15:37:07,033 INFO L226 Difference]: Without dead ends: 261861 [2024-11-08 15:37:07,154 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 294 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 113 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4195 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=2530, Invalid=10580, Unknown=0, NotChecked=0, Total=13110 [2024-11-08 15:37:07,157 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 4119 mSDsluCounter, 2526 mSDsCounter, 0 mSdLazyCounter, 3144 mSolverCounterSat, 72 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4119 SdHoareTripleChecker+Valid, 2809 SdHoareTripleChecker+Invalid, 3216 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 72 IncrementalHoareTripleChecker+Valid, 3144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:07,158 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4119 Valid, 2809 Invalid, 3216 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [72 Valid, 3144 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2024-11-08 15:37:07,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261861 states. [2024-11-08 15:37:12,013 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261861 to 140085. [2024-11-08 15:37:12,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 140085 states, 140084 states have (on average 1.3932069329830672) internal successors, (195166), 140084 states have internal predecessors, (195166), 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) [2024-11-08 15:37:12,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140085 states to 140085 states and 195166 transitions. [2024-11-08 15:37:12,575 INFO L78 Accepts]: Start accepts. Automaton has 140085 states and 195166 transitions. Word has length 99 [2024-11-08 15:37:12,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-08 15:37:12,576 INFO L471 AbstractCegarLoop]: Abstraction has 140085 states and 195166 transitions. [2024-11-08 15:37:12,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 9.241379310344827) internal successors, (268), 28 states have internal predecessors, (268), 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) [2024-11-08 15:37:12,577 INFO L276 IsEmpty]: Start isEmpty. Operand 140085 states and 195166 transitions. [2024-11-08 15:37:12,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-08 15:37:12,580 INFO L207 NwaCegarLoop]: Found error trace [2024-11-08 15:37:12,580 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-08 15:37:12,599 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-08 15:37:12,781 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,SelfDestructingSolverStorable19 [2024-11-08 15:37:12,781 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-08 15:37:12,781 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-08 15:37:12,781 INFO L85 PathProgramCache]: Analyzing trace with hash 2054119220, now seen corresponding path program 1 times [2024-11-08 15:37:12,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-08 15:37:12,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855873866] [2024-11-08 15:37:12,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:12,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-08 15:37:12,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:13,498 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 5 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:13,498 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-08 15:37:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855873866] [2024-11-08 15:37:13,498 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855873866] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-08 15:37:13,498 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597364534] [2024-11-08 15:37:13,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-08 15:37:13,498 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-08 15:37:13,499 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-08 15:37:13,500 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) [2024-11-08 15:37:13,501 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-08 15:37:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-08 15:37:13,630 INFO L255 TraceCheckSpWp]: Trace formula consists of 435 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-08 15:37:13,634 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-08 15:37:14,028 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:14,029 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-08 15:37:15,098 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-08 15:37:15,098 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597364534] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-08 15:37:15,099 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-08 15:37:15,099 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-08 15:37:15,099 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914856482] [2024-11-08 15:37:15,099 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-08 15:37:15,100 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-08 15:37:15,100 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-08 15:37:15,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-08 15:37:15,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=557, Unknown=0, NotChecked=0, Total=650 [2024-11-08 15:37:15,101 INFO L87 Difference]: Start difference. First operand 140085 states and 195166 transitions. Second operand has 26 states, 26 states have (on average 10.73076923076923) internal successors, (279), 25 states have internal predecessors, (279), 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) [2024-11-08 15:37:30,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-08 15:37:30,243 INFO L93 Difference]: Finished difference Result 905561 states and 1263550 transitions. [2024-11-08 15:37:30,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2024-11-08 15:37:30,244 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 10.73076923076923) internal successors, (279), 25 states have internal predecessors, (279), 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 99 [2024-11-08 15:37:30,244 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-08 15:37:31,736 INFO L225 Difference]: With dead ends: 905561 [2024-11-08 15:37:31,737 INFO L226 Difference]: Without dead ends: 766422 [2024-11-08 15:37:32,019 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 284 GetRequests, 181 SyntacticMatches, 0 SemanticMatches, 103 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3358 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=2145, Invalid=8775, Unknown=0, NotChecked=0, Total=10920 [2024-11-08 15:37:32,024 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 6410 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 1268 mSolverCounterSat, 92 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6410 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 1360 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 92 IncrementalHoareTripleChecker+Valid, 1268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-08 15:37:32,025 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6410 Valid, 1472 Invalid, 1360 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [92 Valid, 1268 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-08 15:37:32,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 766422 states.