./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 023d838f 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_opt-floodmax.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 c10298174dc8a10464920798633331c54bfb52691f05a28be9f9c0183eefe1d6 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-09 23:39:21,924 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-09 23:39:21,983 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-09 23:39:21,989 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-09 23:39:21,990 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-09 23:39:22,014 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-09 23:39:22,015 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-09 23:39:22,015 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-09 23:39:22,015 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-09 23:39:22,015 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-09 23:39:22,016 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-09 23:39:22,016 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-09 23:39:22,016 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-09 23:39:22,016 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-09 23:39:22,017 INFO L153 SettingsManager]: * Use SBE=true [2024-11-09 23:39:22,017 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-09 23:39:22,017 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-09 23:39:22,017 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-09 23:39:22,017 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-09 23:39:22,018 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-09 23:39:22,018 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-09 23:39:22,021 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-09 23:39:22,021 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-09 23:39:22,022 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-09 23:39:22,022 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-09 23:39:22,022 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-09 23:39:22,026 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-09 23:39:22,026 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-09 23:39:22,026 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-09 23:39:22,027 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-09 23:39:22,027 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-09 23:39:22,027 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-09 23:39:22,027 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:39:22,027 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-09 23:39:22,027 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-09 23:39:22,028 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-09 23:39:22,029 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-09 23:39:22,029 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c10298174dc8a10464920798633331c54bfb52691f05a28be9f9c0183eefe1d6 [2024-11-09 23:39:22,254 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-09 23:39:22,275 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-09 23:39:22,279 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-09 23:39:22,281 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-09 23:39:22,281 INFO L274 PluginConnector]: CDTParser initialized [2024-11-09 23:39:22,282 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2024-11-09 23:39:23,563 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-09 23:39:23,822 INFO L384 CDTParser]: Found 1 translation units. [2024-11-09 23:39:23,822 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2024-11-09 23:39:23,847 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fcb58f9b/bf071a76154c40c3b367e1e6ac9f9fb4/FLAG7197ef53f [2024-11-09 23:39:24,130 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8fcb58f9b/bf071a76154c40c3b367e1e6ac9f9fb4 [2024-11-09 23:39:24,132 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-09 23:39:24,133 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-09 23:39:24,134 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-09 23:39:24,134 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-09 23:39:24,143 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-09 23:39:24,143 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,144 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@748e2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24, skipping insertion in model container [2024-11-09 23:39:24,144 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,197 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-09 23:39:24,541 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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c[55979,55992] [2024-11-09 23:39:24,548 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:39:24,559 INFO L200 MainTranslator]: Completed pre-run [2024-11-09 23:39:24,649 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_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c[55979,55992] [2024-11-09 23:39:24,650 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-09 23:39:24,682 INFO L204 MainTranslator]: Completed translation [2024-11-09 23:39:24,682 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24 WrapperNode [2024-11-09 23:39:24,682 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-09 23:39:24,683 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-09 23:39:24,683 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-09 23:39:24,683 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-09 23:39:24,690 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,719 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,786 INFO L138 Inliner]: procedures = 25, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 2101 [2024-11-09 23:39:24,786 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-09 23:39:24,787 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-09 23:39:24,787 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-09 23:39:24,787 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-09 23:39:24,796 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,796 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,804 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,844 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]. [2024-11-09 23:39:24,847 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,847 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,875 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,877 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,883 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,894 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,902 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-09 23:39:24,904 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-09 23:39:24,904 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-09 23:39:24,904 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-09 23:39:24,905 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (1/1) ... [2024-11-09 23:39:24,910 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-09 23:39:24,923 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-09 23:39:24,938 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) [2024-11-09 23:39:24,941 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 [2024-11-09 23:39:24,980 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-09 23:39:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-09 23:39:24,981 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-09 23:39:24,981 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-09 23:39:25,176 INFO L256 CfgBuilder]: Building ICFG [2024-11-09 23:39:25,178 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-09 23:39:26,667 INFO L? ?]: Removed 220 outVars from TransFormulas that were not future-live. [2024-11-09 23:39:26,668 INFO L307 CfgBuilder]: Performing block encoding [2024-11-09 23:39:26,715 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-09 23:39:26,718 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-09 23:39:26,719 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:39:26 BoogieIcfgContainer [2024-11-09 23:39:26,719 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-09 23:39:26,721 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-09 23:39:26,722 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-09 23:39:26,725 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-09 23:39:26,725 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.11 11:39:24" (1/3) ... [2024-11-09 23:39:26,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839f51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:39:26, skipping insertion in model container [2024-11-09 23:39:26,726 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.11 11:39:24" (2/3) ... [2024-11-09 23:39:26,726 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5839f51d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.11 11:39:26, skipping insertion in model container [2024-11-09 23:39:26,727 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 09.11 11:39:26" (3/3) ... [2024-11-09 23:39:26,728 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.5.1.ufo.UNBOUNDED.pals.c [2024-11-09 23:39:26,743 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-09 23:39:26,744 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-09 23:39:26,833 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-09 23:39:26,839 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;@7e3b3e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-09 23:39:26,839 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-09 23:39:26,847 INFO L276 IsEmpty]: Start isEmpty. Operand has 812 states, 810 states have (on average 1.7271604938271605) internal successors, (1399), 811 states have internal predecessors, (1399), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:26,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 23:39:26,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:26,868 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:26,869 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:26,873 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:26,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1894425114, now seen corresponding path program 1 times [2024-11-09 23:39:26,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:26,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [778218212] [2024-11-09 23:39:26,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:26,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:27,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:27,406 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:27,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:27,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [778218212] [2024-11-09 23:39:27,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [778218212] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:27,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:27,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-09 23:39:27,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1291820368] [2024-11-09 23:39:27,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:27,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-09 23:39:27,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:27,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-09 23:39:27,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-09 23:39:27,441 INFO L87 Difference]: Start difference. First operand has 812 states, 810 states have (on average 1.7271604938271605) internal successors, (1399), 811 states have internal predecessors, (1399), 0 states have call successors, (0), 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 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:27,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:27,493 INFO L93 Difference]: Finished difference Result 969 states and 1678 transitions. [2024-11-09 23:39:27,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-09 23:39:27,496 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-09 23:39:27,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:27,511 INFO L225 Difference]: With dead ends: 969 [2024-11-09 23:39:27,511 INFO L226 Difference]: Without dead ends: 807 [2024-11-09 23:39:27,514 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 [2024-11-09 23:39:27,517 INFO L432 NwaCegarLoop]: 1391 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, 1391 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 [2024-11-09 23:39:27,518 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 1391 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:27,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-09 23:39:27,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-09 23:39:27,578 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 1.7258064516129032) internal successors, (1391), 806 states have internal predecessors, (1391), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:27,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1391 transitions. [2024-11-09 23:39:27,591 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1391 transitions. Word has length 155 [2024-11-09 23:39:27,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:27,592 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1391 transitions. [2024-11-09 23:39:27,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 77.5) internal successors, (155), 2 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:27,593 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1391 transitions. [2024-11-09 23:39:27,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 156 [2024-11-09 23:39:27,600 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:27,600 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:27,601 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-09 23:39:27,601 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:27,602 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:27,603 INFO L85 PathProgramCache]: Analyzing trace with hash -1883108987, now seen corresponding path program 1 times [2024-11-09 23:39:27,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:27,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [959363604] [2024-11-09 23:39:27,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:27,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:27,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:28,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:28,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:28,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [959363604] [2024-11-09 23:39:28,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [959363604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:28,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:28,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-09 23:39:28,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16327096] [2024-11-09 23:39:28,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:28,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-09 23:39:28,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:28,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-09 23:39:28,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:39:28,047 INFO L87 Difference]: Start difference. First operand 807 states and 1391 transitions. Second operand has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:28,249 INFO L93 Difference]: Finished difference Result 967 states and 1670 transitions. [2024-11-09 23:39:28,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-09 23:39:28,250 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 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 155 [2024-11-09 23:39:28,251 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:28,256 INFO L225 Difference]: With dead ends: 967 [2024-11-09 23:39:28,256 INFO L226 Difference]: Without dead ends: 807 [2024-11-09 23:39:28,257 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 [2024-11-09 23:39:28,258 INFO L432 NwaCegarLoop]: 1389 mSDtfsCounter, 0 mSDsluCounter, 4117 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 5506 SdHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:28,259 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 5506 Invalid, 57 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:39:28,261 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 807 states. [2024-11-09 23:39:28,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 807 to 807. [2024-11-09 23:39:28,279 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 807 states, 806 states have (on average 1.6699751861042185) internal successors, (1346), 806 states have internal predecessors, (1346), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 807 states to 807 states and 1346 transitions. [2024-11-09 23:39:28,281 INFO L78 Accepts]: Start accepts. Automaton has 807 states and 1346 transitions. Word has length 155 [2024-11-09 23:39:28,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:28,282 INFO L471 AbstractCegarLoop]: Abstraction has 807 states and 1346 transitions. [2024-11-09 23:39:28,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 31.0) internal successors, (155), 5 states have internal predecessors, (155), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,282 INFO L276 IsEmpty]: Start isEmpty. Operand 807 states and 1346 transitions. [2024-11-09 23:39:28,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 200 [2024-11-09 23:39:28,284 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:28,284 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:28,285 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-09 23:39:28,285 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:28,285 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:28,285 INFO L85 PathProgramCache]: Analyzing trace with hash 1189820121, now seen corresponding path program 1 times [2024-11-09 23:39:28,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:28,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305000111] [2024-11-09 23:39:28,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:28,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:28,561 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:28,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:28,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305000111] [2024-11-09 23:39:28,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305000111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:28,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:28,564 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:28,564 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964068517] [2024-11-09 23:39:28,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:28,565 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:28,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:28,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:28,566 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:28,567 INFO L87 Difference]: Start difference. First operand 807 states and 1346 transitions. Second operand has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,641 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:28,641 INFO L93 Difference]: Finished difference Result 1105 states and 1870 transitions. [2024-11-09 23:39:28,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:28,642 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 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 199 [2024-11-09 23:39:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:28,645 INFO L225 Difference]: With dead ends: 1105 [2024-11-09 23:39:28,646 INFO L226 Difference]: Without dead ends: 949 [2024-11-09 23:39:28,647 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 [2024-11-09 23:39:28,648 INFO L432 NwaCegarLoop]: 1339 mSDtfsCounter, 239 mSDsluCounter, 1295 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2634 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:28,648 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2634 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:28,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 949 states. [2024-11-09 23:39:28,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 949 to 945. [2024-11-09 23:39:28,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 945 states, 944 states have (on average 1.680084745762712) internal successors, (1586), 944 states have internal predecessors, (1586), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 945 states to 945 states and 1586 transitions. [2024-11-09 23:39:28,665 INFO L78 Accepts]: Start accepts. Automaton has 945 states and 1586 transitions. Word has length 199 [2024-11-09 23:39:28,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:28,666 INFO L471 AbstractCegarLoop]: Abstraction has 945 states and 1586 transitions. [2024-11-09 23:39:28,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 66.33333333333333) internal successors, (199), 3 states have internal predecessors, (199), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,666 INFO L276 IsEmpty]: Start isEmpty. Operand 945 states and 1586 transitions. [2024-11-09 23:39:28,668 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2024-11-09 23:39:28,669 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:28,669 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:28,669 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-09 23:39:28,669 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:28,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:28,670 INFO L85 PathProgramCache]: Analyzing trace with hash -99398960, now seen corresponding path program 1 times [2024-11-09 23:39:28,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:28,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1354655139] [2024-11-09 23:39:28,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:28,670 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:28,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:28,911 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:28,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:28,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1354655139] [2024-11-09 23:39:28,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1354655139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:28,913 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:28,914 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:28,914 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138934974] [2024-11-09 23:39:28,914 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:28,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:28,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:28,915 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:28,915 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:28,915 INFO L87 Difference]: Start difference. First operand 945 states and 1586 transitions. Second operand has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:28,961 INFO L93 Difference]: Finished difference Result 1509 states and 2572 transitions. [2024-11-09 23:39:28,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:28,962 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 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 203 [2024-11-09 23:39:28,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:28,966 INFO L225 Difference]: With dead ends: 1509 [2024-11-09 23:39:28,966 INFO L226 Difference]: Without dead ends: 1215 [2024-11-09 23:39:28,967 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 [2024-11-09 23:39:28,971 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 239 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 239 SdHoareTripleChecker+Valid, 2647 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:28,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [239 Valid, 2647 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:28,973 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1215 states. [2024-11-09 23:39:28,991 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1215 to 1210. [2024-11-09 23:39:28,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1210 states, 1209 states have (on average 1.694789081885856) internal successors, (2049), 1209 states have internal predecessors, (2049), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1210 states to 1210 states and 2049 transitions. [2024-11-09 23:39:28,997 INFO L78 Accepts]: Start accepts. Automaton has 1210 states and 2049 transitions. Word has length 203 [2024-11-09 23:39:28,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:28,997 INFO L471 AbstractCegarLoop]: Abstraction has 1210 states and 2049 transitions. [2024-11-09 23:39:28,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 67.66666666666667) internal successors, (203), 3 states have internal predecessors, (203), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:28,998 INFO L276 IsEmpty]: Start isEmpty. Operand 1210 states and 2049 transitions. [2024-11-09 23:39:29,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 208 [2024-11-09 23:39:29,002 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:29,002 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:29,002 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-09 23:39:29,002 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:29,003 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:29,003 INFO L85 PathProgramCache]: Analyzing trace with hash -474232505, now seen corresponding path program 1 times [2024-11-09 23:39:29,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:29,003 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294150604] [2024-11-09 23:39:29,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:29,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:29,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:29,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:29,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294150604] [2024-11-09 23:39:29,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294150604] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:29,227 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:29,227 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:29,227 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381583971] [2024-11-09 23:39:29,227 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:29,227 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:29,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:29,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:29,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:29,228 INFO L87 Difference]: Start difference. First operand 1210 states and 2049 transitions. Second operand has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:29,274 INFO L93 Difference]: Finished difference Result 2280 states and 3917 transitions. [2024-11-09 23:39:29,275 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:29,275 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 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 207 [2024-11-09 23:39:29,275 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:29,280 INFO L225 Difference]: With dead ends: 2280 [2024-11-09 23:39:29,281 INFO L226 Difference]: Without dead ends: 1721 [2024-11-09 23:39:29,282 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 [2024-11-09 23:39:29,282 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 231 mSDsluCounter, 1305 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 231 SdHoareTripleChecker+Valid, 2648 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:29,283 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [231 Valid, 2648 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:29,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1721 states. [2024-11-09 23:39:29,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1721 to 1714. [2024-11-09 23:39:29,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1714 states, 1713 states have (on average 1.7075306479859895) internal successors, (2925), 1713 states have internal predecessors, (2925), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1714 states to 1714 states and 2925 transitions. [2024-11-09 23:39:29,313 INFO L78 Accepts]: Start accepts. Automaton has 1714 states and 2925 transitions. Word has length 207 [2024-11-09 23:39:29,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:29,314 INFO L471 AbstractCegarLoop]: Abstraction has 1714 states and 2925 transitions. [2024-11-09 23:39:29,314 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 69.0) internal successors, (207), 3 states have internal predecessors, (207), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,315 INFO L276 IsEmpty]: Start isEmpty. Operand 1714 states and 2925 transitions. [2024-11-09 23:39:29,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 212 [2024-11-09 23:39:29,318 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:29,318 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:29,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-09 23:39:29,319 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:29,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:29,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1292209602, now seen corresponding path program 1 times [2024-11-09 23:39:29,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:29,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1349689789] [2024-11-09 23:39:29,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:29,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:29,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:29,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:29,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:29,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1349689789] [2024-11-09 23:39:29,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1349689789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:29,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:29,561 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:29,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237428830] [2024-11-09 23:39:29,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:29,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:29,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:29,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:29,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:29,563 INFO L87 Difference]: Start difference. First operand 1714 states and 2925 transitions. Second operand has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:29,615 INFO L93 Difference]: Finished difference Result 3744 states and 6457 transitions. [2024-11-09 23:39:29,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:29,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 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 211 [2024-11-09 23:39:29,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:29,629 INFO L225 Difference]: With dead ends: 3744 [2024-11-09 23:39:29,630 INFO L226 Difference]: Without dead ends: 2681 [2024-11-09 23:39:29,632 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 [2024-11-09 23:39:29,632 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 223 mSDsluCounter, 1306 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 2649 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:29,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 2649 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:29,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2681 states. [2024-11-09 23:39:29,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2681 to 2670. [2024-11-09 23:39:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2670 states, 2669 states have (on average 1.7148744848257775) internal successors, (4577), 2669 states have internal predecessors, (4577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2670 states to 2670 states and 4577 transitions. [2024-11-09 23:39:29,687 INFO L78 Accepts]: Start accepts. Automaton has 2670 states and 4577 transitions. Word has length 211 [2024-11-09 23:39:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:29,689 INFO L471 AbstractCegarLoop]: Abstraction has 2670 states and 4577 transitions. [2024-11-09 23:39:29,689 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 70.33333333333333) internal successors, (211), 3 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,689 INFO L276 IsEmpty]: Start isEmpty. Operand 2670 states and 4577 transitions. [2024-11-09 23:39:29,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 216 [2024-11-09 23:39:29,693 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:29,693 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:29,693 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-09 23:39:29,693 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:29,694 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:29,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1786444363, now seen corresponding path program 1 times [2024-11-09 23:39:29,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:29,694 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342804956] [2024-11-09 23:39:29,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:29,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:29,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:29,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:29,896 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:29,897 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342804956] [2024-11-09 23:39:29,897 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342804956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:29,897 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:29,897 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:29,897 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1120982419] [2024-11-09 23:39:29,897 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:29,898 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:29,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:29,898 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:29,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:29,899 INFO L87 Difference]: Start difference. First operand 2670 states and 4577 transitions. Second operand has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:29,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:29,969 INFO L93 Difference]: Finished difference Result 6516 states and 11237 transitions. [2024-11-09 23:39:29,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:29,969 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 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 215 [2024-11-09 23:39:29,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:29,984 INFO L225 Difference]: With dead ends: 6516 [2024-11-09 23:39:29,984 INFO L226 Difference]: Without dead ends: 4497 [2024-11-09 23:39:29,988 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 [2024-11-09 23:39:29,989 INFO L432 NwaCegarLoop]: 1343 mSDtfsCounter, 215 mSDsluCounter, 1307 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 2650 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:29,989 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 2650 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:29,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4497 states. [2024-11-09 23:39:30,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4497 to 4478. [2024-11-09 23:39:30,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4478 states, 4477 states have (on average 1.7156578065668975) internal successors, (7681), 4477 states have internal predecessors, (7681), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4478 states to 4478 states and 7681 transitions. [2024-11-09 23:39:30,076 INFO L78 Accepts]: Start accepts. Automaton has 4478 states and 7681 transitions. Word has length 215 [2024-11-09 23:39:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:30,077 INFO L471 AbstractCegarLoop]: Abstraction has 4478 states and 7681 transitions. [2024-11-09 23:39:30,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 71.66666666666667) internal successors, (215), 3 states have internal predecessors, (215), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 4478 states and 7681 transitions. [2024-11-09 23:39:30,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 220 [2024-11-09 23:39:30,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:30,081 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:30,081 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-09 23:39:30,081 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:30,081 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:30,082 INFO L85 PathProgramCache]: Analyzing trace with hash -1481555028, now seen corresponding path program 1 times [2024-11-09 23:39:30,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:30,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1001308113] [2024-11-09 23:39:30,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:30,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:30,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:30,417 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:30,418 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:30,418 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1001308113] [2024-11-09 23:39:30,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1001308113] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:30,418 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:30,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-09 23:39:30,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619091593] [2024-11-09 23:39:30,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:30,419 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-09 23:39:30,419 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:30,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-09 23:39:30,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-09 23:39:30,420 INFO L87 Difference]: Start difference. First operand 4478 states and 7681 transitions. Second operand has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:31,029 INFO L93 Difference]: Finished difference Result 26284 states and 45717 transitions. [2024-11-09 23:39:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-09 23:39:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 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 219 [2024-11-09 23:39:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:31,089 INFO L225 Difference]: With dead ends: 26284 [2024-11-09 23:39:31,089 INFO L226 Difference]: Without dead ends: 22457 [2024-11-09 23:39:31,096 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2024-11-09 23:39:31,097 INFO L432 NwaCegarLoop]: 1362 mSDtfsCounter, 2719 mSDsluCounter, 11587 mSDsCounter, 0 mSdLazyCounter, 387 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2719 SdHoareTripleChecker+Valid, 12949 SdHoareTripleChecker+Invalid, 395 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:31,097 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2719 Valid, 12949 Invalid, 395 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 387 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-09 23:39:31,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22457 states. [2024-11-09 23:39:31,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22457 to 8111. [2024-11-09 23:39:31,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8111 states, 8110 states have (on average 1.723921085080148) internal successors, (13981), 8110 states have internal predecessors, (13981), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:31,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8111 states to 8111 states and 13981 transitions. [2024-11-09 23:39:31,366 INFO L78 Accepts]: Start accepts. Automaton has 8111 states and 13981 transitions. Word has length 219 [2024-11-09 23:39:31,366 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:31,366 INFO L471 AbstractCegarLoop]: Abstraction has 8111 states and 13981 transitions. [2024-11-09 23:39:31,367 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 31.285714285714285) internal successors, (219), 7 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:31,367 INFO L276 IsEmpty]: Start isEmpty. Operand 8111 states and 13981 transitions. [2024-11-09 23:39:31,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 221 [2024-11-09 23:39:31,371 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:31,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:31,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-09 23:39:31,372 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:31,372 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:31,372 INFO L85 PathProgramCache]: Analyzing trace with hash -1201617924, now seen corresponding path program 1 times [2024-11-09 23:39:31,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:31,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861255792] [2024-11-09 23:39:31,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:31,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:31,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:31,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:31,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:31,605 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861255792] [2024-11-09 23:39:31,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861255792] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:31,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:31,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 23:39:31,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624176814] [2024-11-09 23:39:31,606 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:31,606 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 23:39:31,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:31,607 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 23:39:31,607 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 23:39:31,608 INFO L87 Difference]: Start difference. First operand 8111 states and 13981 transitions. Second operand has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:31,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:31,941 INFO L93 Difference]: Finished difference Result 23503 states and 40757 transitions. [2024-11-09 23:39:31,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 23:39:31,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 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 220 [2024-11-09 23:39:31,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:31,976 INFO L225 Difference]: With dead ends: 23503 [2024-11-09 23:39:31,976 INFO L226 Difference]: Without dead ends: 16043 [2024-11-09 23:39:31,990 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:39:31,992 INFO L432 NwaCegarLoop]: 1349 mSDtfsCounter, 793 mSDsluCounter, 2882 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 4231 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:31,992 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 4231 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-09 23:39:32,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16043 states. [2024-11-09 23:39:32,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16043 to 12043. [2024-11-09 23:39:32,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12043 states, 12042 states have (on average 1.72629131373526) internal successors, (20788), 12042 states have internal predecessors, (20788), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:32,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12043 states to 12043 states and 20788 transitions. [2024-11-09 23:39:32,363 INFO L78 Accepts]: Start accepts. Automaton has 12043 states and 20788 transitions. Word has length 220 [2024-11-09 23:39:32,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:32,364 INFO L471 AbstractCegarLoop]: Abstraction has 12043 states and 20788 transitions. [2024-11-09 23:39:32,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.0) internal successors, (220), 4 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:32,365 INFO L276 IsEmpty]: Start isEmpty. Operand 12043 states and 20788 transitions. [2024-11-09 23:39:32,371 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2024-11-09 23:39:32,372 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:32,372 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:32,372 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-09 23:39:32,372 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:32,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:32,373 INFO L85 PathProgramCache]: Analyzing trace with hash -1170760594, now seen corresponding path program 1 times [2024-11-09 23:39:32,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:32,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365894687] [2024-11-09 23:39:32,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:32,374 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:32,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:32,626 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:32,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:32,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365894687] [2024-11-09 23:39:32,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365894687] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:32,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:32,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 23:39:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [981152586] [2024-11-09 23:39:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:32,627 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 23:39:32,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 23:39:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 23:39:32,628 INFO L87 Difference]: Start difference. First operand 12043 states and 20788 transitions. Second operand has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:32,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:32,942 INFO L93 Difference]: Finished difference Result 35223 states and 61023 transitions. [2024-11-09 23:39:32,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 23:39:32,942 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 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 221 [2024-11-09 23:39:32,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:32,981 INFO L225 Difference]: With dead ends: 35223 [2024-11-09 23:39:32,982 INFO L226 Difference]: Without dead ends: 23831 [2024-11-09 23:39:32,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:39:32,999 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 793 mSDsluCounter, 2884 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 793 SdHoareTripleChecker+Valid, 4219 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:32,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [793 Valid, 4219 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:33,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23831 states. [2024-11-09 23:39:33,301 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23831 to 17888. [2024-11-09 23:39:33,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17888 states, 17887 states have (on average 1.7253312461564265) internal successors, (30861), 17887 states have internal predecessors, (30861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17888 states to 17888 states and 30861 transitions. [2024-11-09 23:39:33,352 INFO L78 Accepts]: Start accepts. Automaton has 17888 states and 30861 transitions. Word has length 221 [2024-11-09 23:39:33,353 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:33,353 INFO L471 AbstractCegarLoop]: Abstraction has 17888 states and 30861 transitions. [2024-11-09 23:39:33,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.25) internal successors, (221), 4 states have internal predecessors, (221), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 17888 states and 30861 transitions. [2024-11-09 23:39:33,360 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2024-11-09 23:39:33,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:33,360 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:33,361 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-09 23:39:33,361 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:33,361 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:33,361 INFO L85 PathProgramCache]: Analyzing trace with hash -271441666, now seen corresponding path program 1 times [2024-11-09 23:39:33,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:33,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572277972] [2024-11-09 23:39:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:33,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:33,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:33,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:33,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:33,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572277972] [2024-11-09 23:39:33,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572277972] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:33,581 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:33,581 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 23:39:33,581 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1748656939] [2024-11-09 23:39:33,581 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:33,582 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 23:39:33,582 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:33,582 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 23:39:33,582 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 23:39:33,583 INFO L87 Difference]: Start difference. First operand 17888 states and 30861 transitions. Second operand has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:33,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:33,873 INFO L93 Difference]: Finished difference Result 52815 states and 91399 transitions. [2024-11-09 23:39:33,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 23:39:33,874 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 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 222 [2024-11-09 23:39:33,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:33,939 INFO L225 Difference]: With dead ends: 52815 [2024-11-09 23:39:33,939 INFO L226 Difference]: Without dead ends: 35578 [2024-11-09 23:39:33,970 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:39:33,971 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 791 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 791 SdHoareTripleChecker+Valid, 4221 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:33,971 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [791 Valid, 4221 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:34,001 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35578 states. [2024-11-09 23:39:34,673 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35578 to 26662. [2024-11-09 23:39:34,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26662 states, 26661 states have (on average 1.7239038295637823) internal successors, (45961), 26661 states have internal predecessors, (45961), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:34,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26662 states to 26662 states and 45961 transitions. [2024-11-09 23:39:34,763 INFO L78 Accepts]: Start accepts. Automaton has 26662 states and 45961 transitions. Word has length 222 [2024-11-09 23:39:34,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:34,763 INFO L471 AbstractCegarLoop]: Abstraction has 26662 states and 45961 transitions. [2024-11-09 23:39:34,764 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.5) internal successors, (222), 4 states have internal predecessors, (222), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:34,764 INFO L276 IsEmpty]: Start isEmpty. Operand 26662 states and 45961 transitions. [2024-11-09 23:39:34,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:34,775 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:34,775 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:34,775 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-09 23:39:34,776 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:34,776 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:34,776 INFO L85 PathProgramCache]: Analyzing trace with hash -1078518447, now seen corresponding path program 1 times [2024-11-09 23:39:34,776 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:34,776 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697366944] [2024-11-09 23:39:34,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:34,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:34,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:34,964 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:34,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:34,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697366944] [2024-11-09 23:39:34,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697366944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:34,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:34,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:34,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837508124] [2024-11-09 23:39:34,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:34,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:34,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:34,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:34,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:34,966 INFO L87 Difference]: Start difference. First operand 26662 states and 45961 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:35,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:35,393 INFO L93 Difference]: Finished difference Result 59972 states and 103554 transitions. [2024-11-09 23:39:35,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:35,394 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:35,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:35,476 INFO L225 Difference]: With dead ends: 59972 [2024-11-09 23:39:35,477 INFO L226 Difference]: Without dead ends: 41672 [2024-11-09 23:39:35,514 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 [2024-11-09 23:39:35,514 INFO L432 NwaCegarLoop]: 1563 mSDtfsCounter, 246 mSDsluCounter, 1308 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 246 SdHoareTripleChecker+Valid, 2871 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:35,515 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [246 Valid, 2871 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:35,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41672 states. [2024-11-09 23:39:36,269 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41672 to 41669. [2024-11-09 23:39:36,472 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41669 states, 41668 states have (on average 1.7184410098876837) internal successors, (71604), 41668 states have internal predecessors, (71604), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:36,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41669 states to 41669 states and 71604 transitions. [2024-11-09 23:39:36,551 INFO L78 Accepts]: Start accepts. Automaton has 41669 states and 71604 transitions. Word has length 223 [2024-11-09 23:39:36,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:36,551 INFO L471 AbstractCegarLoop]: Abstraction has 41669 states and 71604 transitions. [2024-11-09 23:39:36,552 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:36,552 INFO L276 IsEmpty]: Start isEmpty. Operand 41669 states and 71604 transitions. [2024-11-09 23:39:36,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:36,556 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:36,556 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:36,556 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-09 23:39:36,556 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:36,557 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:36,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1868732079, now seen corresponding path program 1 times [2024-11-09 23:39:36,557 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:36,557 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961674995] [2024-11-09 23:39:36,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:36,557 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:36,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:36,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:36,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:36,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961674995] [2024-11-09 23:39:36,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1961674995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:36,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:36,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:36,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [992682235] [2024-11-09 23:39:36,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:36,760 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:36,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:36,762 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:36,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:36,762 INFO L87 Difference]: Start difference. First operand 41669 states and 71604 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:37,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:37,415 INFO L93 Difference]: Finished difference Result 93186 states and 160036 transitions. [2024-11-09 23:39:37,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:37,416 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:37,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:37,544 INFO L225 Difference]: With dead ends: 93186 [2024-11-09 23:39:37,544 INFO L226 Difference]: Without dead ends: 64682 [2024-11-09 23:39:37,570 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 [2024-11-09 23:39:37,571 INFO L432 NwaCegarLoop]: 1551 mSDtfsCounter, 238 mSDsluCounter, 1309 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 238 SdHoareTripleChecker+Valid, 2860 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:37,571 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [238 Valid, 2860 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:37,611 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64682 states. [2024-11-09 23:39:38,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64682 to 64679. [2024-11-09 23:39:38,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64679 states, 64678 states have (on average 1.7093756764278425) internal successors, (110559), 64678 states have internal predecessors, (110559), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:38,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64679 states to 64679 states and 110559 transitions. [2024-11-09 23:39:38,742 INFO L78 Accepts]: Start accepts. Automaton has 64679 states and 110559 transitions. Word has length 223 [2024-11-09 23:39:38,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:38,743 INFO L471 AbstractCegarLoop]: Abstraction has 64679 states and 110559 transitions. [2024-11-09 23:39:38,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:38,743 INFO L276 IsEmpty]: Start isEmpty. Operand 64679 states and 110559 transitions. [2024-11-09 23:39:38,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:38,746 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:38,746 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:38,747 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-09 23:39:38,747 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:38,747 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:38,747 INFO L85 PathProgramCache]: Analyzing trace with hash 579843409, now seen corresponding path program 1 times [2024-11-09 23:39:38,748 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:38,748 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552793499] [2024-11-09 23:39:38,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:38,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:38,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:38,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:38,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552793499] [2024-11-09 23:39:38,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552793499] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:38,918 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:38,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:38,919 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431298070] [2024-11-09 23:39:38,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:38,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:38,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:38,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:38,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:38,920 INFO L87 Difference]: Start difference. First operand 64679 states and 110559 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:39,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:39,792 INFO L93 Difference]: Finished difference Result 144627 states and 246959 transitions. [2024-11-09 23:39:39,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:39,793 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:39,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:39,965 INFO L225 Difference]: With dead ends: 144627 [2024-11-09 23:39:39,965 INFO L226 Difference]: Without dead ends: 100062 [2024-11-09 23:39:40,007 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 [2024-11-09 23:39:40,010 INFO L432 NwaCegarLoop]: 1531 mSDtfsCounter, 230 mSDsluCounter, 1310 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 2841 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:40,010 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [230 Valid, 2841 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:40,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100062 states. [2024-11-09 23:39:41,408 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100062 to 100059. [2024-11-09 23:39:41,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100059 states, 100058 states have (on average 1.698654780227468) internal successors, (169964), 100058 states have internal predecessors, (169964), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:41,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100059 states to 100059 states and 169964 transitions. [2024-11-09 23:39:41,978 INFO L78 Accepts]: Start accepts. Automaton has 100059 states and 169964 transitions. Word has length 223 [2024-11-09 23:39:41,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:41,979 INFO L471 AbstractCegarLoop]: Abstraction has 100059 states and 169964 transitions. [2024-11-09 23:39:41,979 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:41,979 INFO L276 IsEmpty]: Start isEmpty. Operand 100059 states and 169964 transitions. [2024-11-09 23:39:41,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:41,981 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:41,981 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:41,981 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-09 23:39:41,982 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:41,982 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:41,982 INFO L85 PathProgramCache]: Analyzing trace with hash 1099825489, now seen corresponding path program 1 times [2024-11-09 23:39:41,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:41,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690340880] [2024-11-09 23:39:41,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:41,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:42,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:42,111 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:42,111 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:42,111 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690340880] [2024-11-09 23:39:42,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690340880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:42,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:42,112 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:42,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328043410] [2024-11-09 23:39:42,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:42,112 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:42,112 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:42,113 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:42,113 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:42,113 INFO L87 Difference]: Start difference. First operand 100059 states and 169964 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:43,272 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:43,272 INFO L93 Difference]: Finished difference Result 196278 states and 333190 transitions. [2024-11-09 23:39:43,273 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:43,273 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:43,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:43,656 INFO L225 Difference]: With dead ends: 196278 [2024-11-09 23:39:43,656 INFO L226 Difference]: Without dead ends: 142174 [2024-11-09 23:39:43,713 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 [2024-11-09 23:39:43,716 INFO L432 NwaCegarLoop]: 1512 mSDtfsCounter, 222 mSDsluCounter, 1311 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 2823 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:43,717 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 2823 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:43,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142174 states. [2024-11-09 23:39:45,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142174 to 142171. [2024-11-09 23:39:45,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142171 states, 142170 states have (on average 1.6887106984595905) internal successors, (240084), 142170 states have internal predecessors, (240084), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:46,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142171 states to 142171 states and 240084 transitions. [2024-11-09 23:39:46,032 INFO L78 Accepts]: Start accepts. Automaton has 142171 states and 240084 transitions. Word has length 223 [2024-11-09 23:39:46,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:46,036 INFO L471 AbstractCegarLoop]: Abstraction has 142171 states and 240084 transitions. [2024-11-09 23:39:46,037 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:46,037 INFO L276 IsEmpty]: Start isEmpty. Operand 142171 states and 240084 transitions. [2024-11-09 23:39:46,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:46,039 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:46,039 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:46,039 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-09 23:39:46,039 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:46,040 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:46,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1181201071, now seen corresponding path program 1 times [2024-11-09 23:39:46,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:46,040 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [185478021] [2024-11-09 23:39:46,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:46,040 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:46,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:46,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:46,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:46,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [185478021] [2024-11-09 23:39:46,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [185478021] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:46,167 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:46,167 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-09 23:39:46,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118266101] [2024-11-09 23:39:46,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:46,168 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-09 23:39:46,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:46,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-09 23:39:46,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-09 23:39:46,168 INFO L87 Difference]: Start difference. First operand 142171 states and 240084 transitions. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:48,013 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:48,013 INFO L93 Difference]: Finished difference Result 277740 states and 468660 transitions. [2024-11-09 23:39:48,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-09 23:39:48,014 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:48,014 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:48,369 INFO L225 Difference]: With dead ends: 277740 [2024-11-09 23:39:48,369 INFO L226 Difference]: Without dead ends: 200961 [2024-11-09 23:39:48,436 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 [2024-11-09 23:39:48,437 INFO L432 NwaCegarLoop]: 1492 mSDtfsCounter, 214 mSDsluCounter, 1312 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 2804 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 [2024-11-09 23:39:48,437 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 2804 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-09 23:39:48,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200961 states. [2024-11-09 23:39:51,508 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200961 to 200958. [2024-11-09 23:39:51,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 200958 states, 200957 states have (on average 1.6776175997850287) internal successors, (337129), 200957 states have internal predecessors, (337129), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:52,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200958 states to 200958 states and 337129 transitions. [2024-11-09 23:39:52,066 INFO L78 Accepts]: Start accepts. Automaton has 200958 states and 337129 transitions. Word has length 223 [2024-11-09 23:39:52,067 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:39:52,067 INFO L471 AbstractCegarLoop]: Abstraction has 200958 states and 337129 transitions. [2024-11-09 23:39:52,067 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:52,067 INFO L276 IsEmpty]: Start isEmpty. Operand 200958 states and 337129 transitions. [2024-11-09 23:39:52,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 224 [2024-11-09 23:39:52,069 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:39:52,069 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:39:52,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-09 23:39:52,069 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:39:52,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:39:52,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1780383024, now seen corresponding path program 1 times [2024-11-09 23:39:52,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:39:52,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [358018856] [2024-11-09 23:39:52,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:39:52,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:39:52,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:39:52,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:39:52,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:39:52,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [358018856] [2024-11-09 23:39:52,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [358018856] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:39:52,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:39:52,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 23:39:52,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204041598] [2024-11-09 23:39:52,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:39:52,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 23:39:52,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:39:52,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 23:39:52,719 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 23:39:52,719 INFO L87 Difference]: Start difference. First operand 200958 states and 337129 transitions. Second operand has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:39:56,593 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-09 23:39:56,593 INFO L93 Difference]: Finished difference Result 662924 states and 1113030 transitions. [2024-11-09 23:39:56,594 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-09 23:39:56,594 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 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 223 [2024-11-09 23:39:56,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-09 23:39:57,500 INFO L225 Difference]: With dead ends: 662924 [2024-11-09 23:39:57,501 INFO L226 Difference]: Without dead ends: 462668 [2024-11-09 23:39:57,635 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-09 23:39:57,636 INFO L432 NwaCegarLoop]: 1335 mSDtfsCounter, 789 mSDsluCounter, 2888 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 4223 SdHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-09 23:39:57,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 4223 Invalid, 52 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-09 23:39:57,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 462668 states. [2024-11-09 23:40:03,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 462668 to 331087. [2024-11-09 23:40:03,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 331087 states, 331086 states have (on average 1.6716955715433452) internal successors, (553475), 331086 states have internal predecessors, (553475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:40:04,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 331087 states to 331087 states and 553475 transitions. [2024-11-09 23:40:04,217 INFO L78 Accepts]: Start accepts. Automaton has 331087 states and 553475 transitions. Word has length 223 [2024-11-09 23:40:04,218 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-09 23:40:04,218 INFO L471 AbstractCegarLoop]: Abstraction has 331087 states and 553475 transitions. [2024-11-09 23:40:04,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 55.75) internal successors, (223), 4 states have internal predecessors, (223), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-09 23:40:04,218 INFO L276 IsEmpty]: Start isEmpty. Operand 331087 states and 553475 transitions. [2024-11-09 23:40:04,219 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-11-09 23:40:04,219 INFO L207 NwaCegarLoop]: Found error trace [2024-11-09 23:40:04,219 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-09 23:40:04,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-09 23:40:04,220 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-09 23:40:04,220 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-09 23:40:04,220 INFO L85 PathProgramCache]: Analyzing trace with hash 905180672, now seen corresponding path program 1 times [2024-11-09 23:40:04,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-09 23:40:04,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127052784] [2024-11-09 23:40:04,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-09 23:40:04,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-09 23:40:04,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-09 23:40:04,420 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-09 23:40:04,420 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-09 23:40:04,420 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127052784] [2024-11-09 23:40:04,420 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127052784] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-09 23:40:04,420 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-09 23:40:04,421 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-09 23:40:04,421 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1018353205] [2024-11-09 23:40:04,421 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-09 23:40:04,421 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-09 23:40:04,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-09 23:40:04,422 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-09 23:40:04,422 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-09 23:40:04,422 INFO L87 Difference]: Start difference. First operand 331087 states and 553475 transitions. Second operand has 4 states, 4 states have (on average 56.0) internal successors, (224), 4 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)