./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/unreach-call.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 2d5a83ebadca07865f87524ca234843199e1b35abf1f6d3ef3a25954ede1db9e --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 03:21:17,913 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 03:21:17,969 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-11 03:21:17,972 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 03:21:17,973 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 03:21:17,987 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 03:21:17,988 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 03:21:17,988 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 03:21:17,988 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 03:21:17,989 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 03:21:17,989 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 03:21:17,989 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 03:21:17,990 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 03:21:17,990 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 03:21:17,990 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 03:21:17,990 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 03:21:17,991 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-11 03:21:17,991 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 03:21:17,991 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 03:21:17,991 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 03:21:17,992 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 03:21:17,992 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-11 03:21:17,992 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 03:21:17,993 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-11 03:21:17,993 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 03:21:17,993 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 03:21:17,993 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-11 03:21:17,993 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 03:21:17,994 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 03:21:17,994 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 03:21:17,994 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 03:21:17,994 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 03:21:17,995 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:21:17,995 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 03:21:17,995 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 03:21:17,995 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-11 03:21:17,996 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 03:21:17,996 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 03:21:17,996 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 03:21:17,996 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 03:21:17,996 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 03:21:17,997 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 03:21:17,997 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 2d5a83ebadca07865f87524ca234843199e1b35abf1f6d3ef3a25954ede1db9e [2024-10-11 03:21:18,197 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 03:21:18,218 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 03:21:18,221 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 03:21:18,223 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 03:21:18,223 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 03:21:18,224 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c [2024-10-11 03:21:19,978 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 03:21:20,186 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 03:21:20,186 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c [2024-10-11 03:21:20,200 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8cfc70ca/2a4ec40a9e614be19e5acfc0a82f00e5/FLAG2a91b08b6 [2024-10-11 03:21:20,555 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/b8cfc70ca/2a4ec40a9e614be19e5acfc0a82f00e5 [2024-10-11 03:21:20,557 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 03:21:20,558 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 03:21:20,559 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 03:21:20,560 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 03:21:20,564 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 03:21:20,564 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:20,565 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a3a3c3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20, skipping insertion in model container [2024-10-11 03:21:20,565 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:20,617 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 03:21:20,838 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c[12792,12805] [2024-10-11 03:21:20,841 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:21:20,851 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 03:21:20,927 WARN L248 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded/pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c[12792,12805] [2024-10-11 03:21:20,928 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 03:21:20,973 INFO L204 MainTranslator]: Completed translation [2024-10-11 03:21:20,974 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20 WrapperNode [2024-10-11 03:21:20,975 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 03:21:20,976 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 03:21:20,976 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 03:21:20,976 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 03:21:20,982 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:20,990 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,021 INFO L138 Inliner]: procedures = 24, calls = 16, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 386 [2024-10-11 03:21:21,021 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 03:21:21,022 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 03:21:21,022 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 03:21:21,022 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 03:21:21,037 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,037 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,042 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,066 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]. [2024-10-11 03:21:21,067 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,067 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,085 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,094 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,099 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,101 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,105 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 03:21:21,106 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 03:21:21,106 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 03:21:21,106 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 03:21:21,107 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (1/1) ... [2024-10-11 03:21:21,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 03:21:21,121 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:21:21,142 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 03:21:21,149 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 03:21:21,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 03:21:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 03:21:21,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 03:21:21,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 03:21:21,286 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 03:21:21,288 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 03:21:21,655 INFO L? ?]: Removed 45 outVars from TransFormulas that were not future-live. [2024-10-11 03:21:21,655 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 03:21:21,693 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 03:21:21,693 INFO L314 CfgBuilder]: Removed 1 assume(true) statements. [2024-10-11 03:21:21,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:21:21 BoogieIcfgContainer [2024-10-11 03:21:21,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 03:21:21,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 03:21:21,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 03:21:21,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 03:21:21,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 03:21:20" (1/3) ... [2024-10-11 03:21:21,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e7c16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:21:21, skipping insertion in model container [2024-10-11 03:21:21,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 03:21:20" (2/3) ... [2024-10-11 03:21:21,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@71e7c16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 03:21:21, skipping insertion in model container [2024-10-11 03:21:21,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 03:21:21" (3/3) ... [2024-10-11 03:21:21,701 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_lcr-var-start-time.5.1.ufo.BOUNDED-10.pals.c [2024-10-11 03:21:21,714 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 03:21:21,715 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-11 03:21:21,762 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 03:21:21,767 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;@59cec910, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 03:21:21,767 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-10-11 03:21:21,771 INFO L276 IsEmpty]: Start isEmpty. Operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 states have internal predecessors, (170), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:21,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 03:21:21,777 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:21,778 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] [2024-10-11 03:21:21,778 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:21,782 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:21,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1646132803, now seen corresponding path program 1 times [2024-10-11 03:21:21,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:21,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27711311] [2024-10-11 03:21:21,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:21,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:21,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:21,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27711311] [2024-10-11 03:21:21,995 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27711311] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:21,995 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:21,995 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 03:21:21,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805155764] [2024-10-11 03:21:21,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:22,003 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 03:21:22,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:22,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 03:21:22,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 03:21:22,030 INFO L87 Difference]: Start difference. First operand has 97 states, 95 states have (on average 1.7894736842105263) internal successors, (170), 96 states have internal predecessors, (170), 0 states have call successors, (0), 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 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:22,085 INFO L93 Difference]: Finished difference Result 159 states and 272 transitions. [2024-10-11 03:21:22,090 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 03:21:22,092 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-11 03:21:22,092 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:22,100 INFO L225 Difference]: With dead ends: 159 [2024-10-11 03:21:22,100 INFO L226 Difference]: Without dead ends: 95 [2024-10-11 03:21:22,102 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 [2024-10-11 03:21:22,105 INFO L432 NwaCegarLoop]: 163 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 4 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 163 SdHoareTripleChecker+Invalid, 4 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 4 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:22,105 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 163 Invalid, 4 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 4 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:22,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-11 03:21:22,129 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-11 03:21:22,130 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.7553191489361701) internal successors, (165), 94 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 165 transitions. [2024-10-11 03:21:22,132 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 165 transitions. Word has length 30 [2024-10-11 03:21:22,132 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:22,132 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 165 transitions. [2024-10-11 03:21:22,132 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,133 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 165 transitions. [2024-10-11 03:21:22,135 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-10-11 03:21:22,135 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:22,135 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] [2024-10-11 03:21:22,135 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 03:21:22,135 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:22,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:22,136 INFO L85 PathProgramCache]: Analyzing trace with hash 277095231, now seen corresponding path program 1 times [2024-10-11 03:21:22,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:22,136 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587474951] [2024-10-11 03:21:22,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:22,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:22,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:22,411 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:22,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:22,413 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587474951] [2024-10-11 03:21:22,413 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587474951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:22,413 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:22,413 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:21:22,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622717645] [2024-10-11 03:21:22,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:22,415 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:21:22,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:22,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:21:22,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:21:22,415 INFO L87 Difference]: Start difference. First operand 95 states and 165 transitions. Second operand has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:22,492 INFO L93 Difference]: Finished difference Result 157 states and 265 transitions. [2024-10-11 03:21:22,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:21:22,492 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 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 30 [2024-10-11 03:21:22,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:22,493 INFO L225 Difference]: With dead ends: 157 [2024-10-11 03:21:22,493 INFO L226 Difference]: Without dead ends: 95 [2024-10-11 03:21:22,494 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:21:22,494 INFO L432 NwaCegarLoop]: 162 mSDtfsCounter, 0 mSDsluCounter, 289 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 451 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:22,495 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 451 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:22,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2024-10-11 03:21:22,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 95. [2024-10-11 03:21:22,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 94 states have (on average 1.4148936170212767) internal successors, (133), 94 states have internal predecessors, (133), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 133 transitions. [2024-10-11 03:21:22,507 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 133 transitions. Word has length 30 [2024-10-11 03:21:22,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:22,507 INFO L471 AbstractCegarLoop]: Abstraction has 95 states and 133 transitions. [2024-10-11 03:21:22,508 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.5) internal successors, (30), 4 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,508 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 133 transitions. [2024-10-11 03:21:22,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 03:21:22,509 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:22,509 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] [2024-10-11 03:21:22,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 03:21:22,510 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:22,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:22,510 INFO L85 PathProgramCache]: Analyzing trace with hash 167424512, now seen corresponding path program 1 times [2024-10-11 03:21:22,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:22,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790147673] [2024-10-11 03:21:22,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:22,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:22,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:22,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:22,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:22,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790147673] [2024-10-11 03:21:22,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790147673] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:22,587 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:22,587 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:22,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1716920608] [2024-10-11 03:21:22,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:22,588 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:22,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:22,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:22,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:22,589 INFO L87 Difference]: Start difference. First operand 95 states and 133 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:22,613 INFO L93 Difference]: Finished difference Result 205 states and 313 transitions. [2024-10-11 03:21:22,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:22,614 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-11 03:21:22,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:22,615 INFO L225 Difference]: With dead ends: 205 [2024-10-11 03:21:22,615 INFO L226 Difference]: Without dead ends: 146 [2024-10-11 03:21:22,615 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 [2024-10-11 03:21:22,616 INFO L432 NwaCegarLoop]: 191 mSDtfsCounter, 81 mSDsluCounter, 97 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 81 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:22,617 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [81 Valid, 288 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:22,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-10-11 03:21:22,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 144. [2024-10-11 03:21:22,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 143 states have (on average 1.4965034965034965) internal successors, (214), 143 states have internal predecessors, (214), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,627 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 214 transitions. [2024-10-11 03:21:22,630 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 214 transitions. Word has length 61 [2024-10-11 03:21:22,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:22,630 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 214 transitions. [2024-10-11 03:21:22,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,631 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 214 transitions. [2024-10-11 03:21:22,632 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 03:21:22,632 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:22,632 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] [2024-10-11 03:21:22,632 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-11 03:21:22,632 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:22,633 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:22,633 INFO L85 PathProgramCache]: Analyzing trace with hash -267550305, now seen corresponding path program 1 times [2024-10-11 03:21:22,633 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:22,633 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [622167587] [2024-10-11 03:21:22,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:22,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:22,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:22,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:22,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [622167587] [2024-10-11 03:21:22,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [622167587] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:22,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:22,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:22,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815403217] [2024-10-11 03:21:22,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:22,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:22,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:22,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:22,762 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:22,762 INFO L87 Difference]: Start difference. First operand 144 states and 214 transitions. Second operand has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:22,790 INFO L93 Difference]: Finished difference Result 344 states and 542 transitions. [2024-10-11 03:21:22,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:22,790 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-11 03:21:22,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:22,792 INFO L225 Difference]: With dead ends: 344 [2024-10-11 03:21:22,793 INFO L226 Difference]: Without dead ends: 236 [2024-10-11 03:21:22,797 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 [2024-10-11 03:21:22,799 INFO L432 NwaCegarLoop]: 184 mSDtfsCounter, 77 mSDsluCounter, 101 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 285 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:22,799 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 285 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:22,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2024-10-11 03:21:22,818 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 234. [2024-10-11 03:21:22,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 234 states, 233 states have (on average 1.5493562231759657) internal successors, (361), 233 states have internal predecessors, (361), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 234 states to 234 states and 361 transitions. [2024-10-11 03:21:22,821 INFO L78 Accepts]: Start accepts. Automaton has 234 states and 361 transitions. Word has length 61 [2024-10-11 03:21:22,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:22,821 INFO L471 AbstractCegarLoop]: Abstraction has 234 states and 361 transitions. [2024-10-11 03:21:22,821 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.333333333333332) internal successors, (61), 3 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:22,822 INFO L276 IsEmpty]: Start isEmpty. Operand 234 states and 361 transitions. [2024-10-11 03:21:22,822 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-10-11 03:21:22,822 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:22,822 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] [2024-10-11 03:21:22,823 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 03:21:22,823 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:22,823 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:22,823 INFO L85 PathProgramCache]: Analyzing trace with hash -1476462402, now seen corresponding path program 1 times [2024-10-11 03:21:22,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:22,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113766467] [2024-10-11 03:21:22,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:22,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:22,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:23,011 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:23,012 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:23,012 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113766467] [2024-10-11 03:21:23,012 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113766467] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:23,012 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:23,012 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:23,012 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279309314] [2024-10-11 03:21:23,012 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:23,013 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:23,013 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:23,013 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:23,013 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:23,013 INFO L87 Difference]: Start difference. First operand 234 states and 361 transitions. Second operand has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:23,158 INFO L93 Difference]: Finished difference Result 1422 states and 2311 transitions. [2024-10-11 03:21:23,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:23,159 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 61 [2024-10-11 03:21:23,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:23,165 INFO L225 Difference]: With dead ends: 1422 [2024-10-11 03:21:23,165 INFO L226 Difference]: Without dead ends: 1224 [2024-10-11 03:21:23,166 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:23,167 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 1339 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1339 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:23,171 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1339 Valid, 952 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:23,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2024-10-11 03:21:23,202 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 430. [2024-10-11 03:21:23,203 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 430 states, 429 states have (on average 1.578088578088578) internal successors, (677), 429 states have internal predecessors, (677), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 430 states to 430 states and 677 transitions. [2024-10-11 03:21:23,205 INFO L78 Accepts]: Start accepts. Automaton has 430 states and 677 transitions. Word has length 61 [2024-10-11 03:21:23,205 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:23,205 INFO L471 AbstractCegarLoop]: Abstraction has 430 states and 677 transitions. [2024-10-11 03:21:23,206 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.714285714285714) internal successors, (61), 7 states have internal predecessors, (61), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,206 INFO L276 IsEmpty]: Start isEmpty. Operand 430 states and 677 transitions. [2024-10-11 03:21:23,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-10-11 03:21:23,207 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:23,207 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] [2024-10-11 03:21:23,207 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-11 03:21:23,207 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:23,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:23,208 INFO L85 PathProgramCache]: Analyzing trace with hash 1461246200, now seen corresponding path program 1 times [2024-10-11 03:21:23,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:23,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1604842153] [2024-10-11 03:21:23,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:23,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:23,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:23,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:23,491 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:23,492 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1604842153] [2024-10-11 03:21:23,492 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1604842153] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:23,492 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:23,492 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-10-11 03:21:23,492 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [722326147] [2024-10-11 03:21:23,492 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:23,493 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 03:21:23,493 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:23,493 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 03:21:23,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:21:23,493 INFO L87 Difference]: Start difference. First operand 430 states and 677 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:23,523 INFO L93 Difference]: Finished difference Result 448 states and 702 transitions. [2024-10-11 03:21:23,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 03:21:23,524 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 62 [2024-10-11 03:21:23,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:23,526 INFO L225 Difference]: With dead ends: 448 [2024-10-11 03:21:23,526 INFO L226 Difference]: Without dead ends: 446 [2024-10-11 03:21:23,526 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 03:21:23,527 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 0 mSDsluCounter, 251 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:23,527 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 380 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:23,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 446 states. [2024-10-11 03:21:23,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 446 to 446. [2024-10-11 03:21:23,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 446 states, 445 states have (on average 1.557303370786517) internal successors, (693), 445 states have internal predecessors, (693), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 693 transitions. [2024-10-11 03:21:23,555 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 693 transitions. Word has length 62 [2024-10-11 03:21:23,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:23,556 INFO L471 AbstractCegarLoop]: Abstraction has 446 states and 693 transitions. [2024-10-11 03:21:23,556 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,556 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 693 transitions. [2024-10-11 03:21:23,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 03:21:23,557 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:23,557 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] [2024-10-11 03:21:23,557 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-11 03:21:23,557 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:23,558 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:23,558 INFO L85 PathProgramCache]: Analyzing trace with hash -1945006298, now seen corresponding path program 1 times [2024-10-11 03:21:23,558 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:23,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012391813] [2024-10-11 03:21:23,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:23,558 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:23,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:23,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:23,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012391813] [2024-10-11 03:21:23,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012391813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:23,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:23,642 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:23,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166752157] [2024-10-11 03:21:23,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:23,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:23,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:23,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:23,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:23,644 INFO L87 Difference]: Start difference. First operand 446 states and 693 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,667 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:23,668 INFO L93 Difference]: Finished difference Result 1210 states and 1911 transitions. [2024-10-11 03:21:23,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:23,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 03:21:23,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:23,674 INFO L225 Difference]: With dead ends: 1210 [2024-10-11 03:21:23,674 INFO L226 Difference]: Without dead ends: 800 [2024-10-11 03:21:23,675 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 [2024-10-11 03:21:23,676 INFO L432 NwaCegarLoop]: 130 mSDtfsCounter, 62 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 223 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:23,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 223 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:23,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 800 states. [2024-10-11 03:21:23,698 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 800 to 798. [2024-10-11 03:21:23,704 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 798 states, 797 states have (on average 1.5621079046424091) internal successors, (1245), 797 states have internal predecessors, (1245), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 798 states to 798 states and 1245 transitions. [2024-10-11 03:21:23,709 INFO L78 Accepts]: Start accepts. Automaton has 798 states and 1245 transitions. Word has length 63 [2024-10-11 03:21:23,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:23,710 INFO L471 AbstractCegarLoop]: Abstraction has 798 states and 1245 transitions. [2024-10-11 03:21:23,710 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,713 INFO L276 IsEmpty]: Start isEmpty. Operand 798 states and 1245 transitions. [2024-10-11 03:21:23,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-10-11 03:21:23,714 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:23,714 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] [2024-10-11 03:21:23,715 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 03:21:23,715 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:23,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:23,715 INFO L85 PathProgramCache]: Analyzing trace with hash -157863225, now seen corresponding path program 1 times [2024-10-11 03:21:23,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:23,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950582468] [2024-10-11 03:21:23,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:23,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:23,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:23,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:23,775 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:23,775 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950582468] [2024-10-11 03:21:23,775 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950582468] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:23,776 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:23,777 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:23,777 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3933097] [2024-10-11 03:21:23,777 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:23,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:23,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:23,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:23,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:23,778 INFO L87 Difference]: Start difference. First operand 798 states and 1245 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:23,820 INFO L93 Difference]: Finished difference Result 1556 states and 2450 transitions. [2024-10-11 03:21:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:23,821 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 63 [2024-10-11 03:21:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:23,824 INFO L225 Difference]: With dead ends: 1556 [2024-10-11 03:21:23,824 INFO L226 Difference]: Without dead ends: 1146 [2024-10-11 03:21:23,825 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 [2024-10-11 03:21:23,827 INFO L432 NwaCegarLoop]: 205 mSDtfsCounter, 85 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:23,827 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 298 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:23,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1146 states. [2024-10-11 03:21:23,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1146 to 1144. [2024-10-11 03:21:23,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1144 states, 1143 states have (on average 1.5599300087489063) internal successors, (1783), 1143 states have internal predecessors, (1783), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1144 states to 1144 states and 1783 transitions. [2024-10-11 03:21:23,880 INFO L78 Accepts]: Start accepts. Automaton has 1144 states and 1783 transitions. Word has length 63 [2024-10-11 03:21:23,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:23,881 INFO L471 AbstractCegarLoop]: Abstraction has 1144 states and 1783 transitions. [2024-10-11 03:21:23,881 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,881 INFO L276 IsEmpty]: Start isEmpty. Operand 1144 states and 1783 transitions. [2024-10-11 03:21:23,882 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 03:21:23,882 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:23,882 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:23,882 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-11 03:21:23,882 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:23,883 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:23,883 INFO L85 PathProgramCache]: Analyzing trace with hash -199705825, now seen corresponding path program 1 times [2024-10-11 03:21:23,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:23,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [60747195] [2024-10-11 03:21:23,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:23,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:23,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:23,930 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:23,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:23,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [60747195] [2024-10-11 03:21:23,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [60747195] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:23,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:23,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:23,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [417843256] [2024-10-11 03:21:23,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:23,932 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:23,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:23,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:23,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:23,934 INFO L87 Difference]: Start difference. First operand 1144 states and 1783 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:23,979 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:23,979 INFO L93 Difference]: Finished difference Result 3164 states and 4937 transitions. [2024-10-11 03:21:23,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:23,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-11 03:21:23,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:23,988 INFO L225 Difference]: With dead ends: 3164 [2024-10-11 03:21:23,988 INFO L226 Difference]: Without dead ends: 2058 [2024-10-11 03:21:23,990 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 [2024-10-11 03:21:23,990 INFO L432 NwaCegarLoop]: 170 mSDtfsCounter, 69 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:23,990 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 279 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:23,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2058 states. [2024-10-11 03:21:24,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2058 to 2056. [2024-10-11 03:21:24,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2056 states, 2055 states have (on average 1.5411192214111922) internal successors, (3167), 2055 states have internal predecessors, (3167), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2056 states to 2056 states and 3167 transitions. [2024-10-11 03:21:24,038 INFO L78 Accepts]: Start accepts. Automaton has 2056 states and 3167 transitions. Word has length 64 [2024-10-11 03:21:24,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:24,038 INFO L471 AbstractCegarLoop]: Abstraction has 2056 states and 3167 transitions. [2024-10-11 03:21:24,038 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,038 INFO L276 IsEmpty]: Start isEmpty. Operand 2056 states and 3167 transitions. [2024-10-11 03:21:24,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-10-11 03:21:24,040 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:24,040 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:24,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-11 03:21:24,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:24,041 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:24,041 INFO L85 PathProgramCache]: Analyzing trace with hash -673434561, now seen corresponding path program 1 times [2024-10-11 03:21:24,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:24,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793307937] [2024-10-11 03:21:24,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:24,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:24,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:24,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:24,094 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:24,094 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793307937] [2024-10-11 03:21:24,094 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793307937] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:24,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:24,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:24,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931859753] [2024-10-11 03:21:24,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:24,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:24,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:24,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:24,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:24,096 INFO L87 Difference]: Start difference. First operand 2056 states and 3167 transitions. Second operand has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:24,153 INFO L93 Difference]: Finished difference Result 5708 states and 8753 transitions. [2024-10-11 03:21:24,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:24,153 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 64 [2024-10-11 03:21:24,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:24,162 INFO L225 Difference]: With dead ends: 5708 [2024-10-11 03:21:24,162 INFO L226 Difference]: Without dead ends: 3690 [2024-10-11 03:21:24,164 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 [2024-10-11 03:21:24,165 INFO L432 NwaCegarLoop]: 187 mSDtfsCounter, 73 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 292 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:24,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 292 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:24,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2024-10-11 03:21:24,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2024-10-11 03:21:24,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 1.512069433143477) internal successors, (5575), 3687 states have internal predecessors, (5575), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5575 transitions. [2024-10-11 03:21:24,308 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5575 transitions. Word has length 64 [2024-10-11 03:21:24,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:24,308 INFO L471 AbstractCegarLoop]: Abstraction has 3688 states and 5575 transitions. [2024-10-11 03:21:24,309 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.333333333333332) internal successors, (64), 3 states have internal predecessors, (64), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,309 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5575 transitions. [2024-10-11 03:21:24,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 03:21:24,313 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:24,313 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:24,314 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 03:21:24,314 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:24,314 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:24,315 INFO L85 PathProgramCache]: Analyzing trace with hash 1327109602, now seen corresponding path program 1 times [2024-10-11 03:21:24,315 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:24,315 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750752727] [2024-10-11 03:21:24,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:24,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:24,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:24,445 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 19 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:24,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:24,446 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750752727] [2024-10-11 03:21:24,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750752727] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:24,446 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:24,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:24,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156304106] [2024-10-11 03:21:24,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:24,447 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:24,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:24,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:24,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:24,448 INFO L87 Difference]: Start difference. First operand 3688 states and 5575 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:24,524 INFO L93 Difference]: Finished difference Result 7340 states and 11113 transitions. [2024-10-11 03:21:24,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:24,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 03:21:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:24,538 INFO L225 Difference]: With dead ends: 7340 [2024-10-11 03:21:24,538 INFO L226 Difference]: Without dead ends: 3690 [2024-10-11 03:21:24,544 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 [2024-10-11 03:21:24,545 INFO L432 NwaCegarLoop]: 167 mSDtfsCounter, 67 mSDsluCounter, 117 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:24,545 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 284 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:24,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3690 states. [2024-10-11 03:21:24,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3690 to 3688. [2024-10-11 03:21:24,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3688 states, 3687 states have (on average 1.4990507187415243) internal successors, (5527), 3687 states have internal predecessors, (5527), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3688 states to 3688 states and 5527 transitions. [2024-10-11 03:21:24,808 INFO L78 Accepts]: Start accepts. Automaton has 3688 states and 5527 transitions. Word has length 89 [2024-10-11 03:21:24,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:24,809 INFO L471 AbstractCegarLoop]: Abstraction has 3688 states and 5527 transitions. [2024-10-11 03:21:24,809 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:24,809 INFO L276 IsEmpty]: Start isEmpty. Operand 3688 states and 5527 transitions. [2024-10-11 03:21:24,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 03:21:24,815 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:24,815 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:24,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-11 03:21:24,815 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:24,816 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:24,816 INFO L85 PathProgramCache]: Analyzing trace with hash 1833394947, now seen corresponding path program 1 times [2024-10-11 03:21:24,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:24,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804402418] [2024-10-11 03:21:24,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:24,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:24,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:25,052 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:25,053 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:25,053 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804402418] [2024-10-11 03:21:25,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804402418] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:25,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:25,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:25,053 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993923128] [2024-10-11 03:21:25,053 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:25,053 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:25,053 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:25,054 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:25,054 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:25,054 INFO L87 Difference]: Start difference. First operand 3688 states and 5527 transitions. Second operand has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:25,096 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:25,096 INFO L93 Difference]: Finished difference Result 5516 states and 8273 transitions. [2024-10-11 03:21:25,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:25,097 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 89 [2024-10-11 03:21:25,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:25,102 INFO L225 Difference]: With dead ends: 5516 [2024-10-11 03:21:25,102 INFO L226 Difference]: Without dead ends: 1866 [2024-10-11 03:21:25,105 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 [2024-10-11 03:21:25,106 INFO L432 NwaCegarLoop]: 158 mSDtfsCounter, 61 mSDsluCounter, 107 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:25,106 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 265 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:25,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1866 states. [2024-10-11 03:21:25,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1866 to 1864. [2024-10-11 03:21:25,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1864 states, 1863 states have (on average 1.4809447128287707) internal successors, (2759), 1863 states have internal predecessors, (2759), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:25,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1864 states to 1864 states and 2759 transitions. [2024-10-11 03:21:25,196 INFO L78 Accepts]: Start accepts. Automaton has 1864 states and 2759 transitions. Word has length 89 [2024-10-11 03:21:25,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:25,196 INFO L471 AbstractCegarLoop]: Abstraction has 1864 states and 2759 transitions. [2024-10-11 03:21:25,196 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 29.666666666666668) internal successors, (89), 3 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:25,196 INFO L276 IsEmpty]: Start isEmpty. Operand 1864 states and 2759 transitions. [2024-10-11 03:21:25,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2024-10-11 03:21:25,197 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:25,198 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:25,198 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 03:21:25,198 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:25,199 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:25,199 INFO L85 PathProgramCache]: Analyzing trace with hash -509450076, now seen corresponding path program 1 times [2024-10-11 03:21:25,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:25,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1541696432] [2024-10-11 03:21:25,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:25,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:25,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:25,925 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:25,925 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:25,925 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1541696432] [2024-10-11 03:21:25,925 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1541696432] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:21:25,926 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [773907818] [2024-10-11 03:21:25,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:25,926 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:21:25,926 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:21:25,933 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:21:25,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 03:21:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:26,075 INFO L255 TraceCheckSpWp]: Trace formula consists of 359 conjuncts, 18 conjuncts are in the unsatisfiable core [2024-10-11 03:21:26,083 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:21:26,687 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:26,687 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:21:27,472 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:27,473 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [773907818] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:21:27,473 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:21:27,473 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6, 8] total 20 [2024-10-11 03:21:27,473 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027029013] [2024-10-11 03:21:27,473 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:21:27,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-10-11 03:21:27,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:27,474 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-10-11 03:21:27,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=320, Unknown=0, NotChecked=0, Total=380 [2024-10-11 03:21:27,475 INFO L87 Difference]: Start difference. First operand 1864 states and 2759 transitions. Second operand has 20 states, 20 states have (on average 13.1) internal successors, (262), 20 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:35,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:35,922 INFO L93 Difference]: Finished difference Result 21084 states and 31037 transitions. [2024-10-11 03:21:35,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 122 states. [2024-10-11 03:21:35,923 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 13.1) internal successors, (262), 20 states have internal predecessors, (262), 0 states have call successors, (0), 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 89 [2024-10-11 03:21:35,923 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:36,068 INFO L225 Difference]: With dead ends: 21084 [2024-10-11 03:21:36,072 INFO L226 Difference]: Without dead ends: 19834 [2024-10-11 03:21:36,098 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 302 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 136 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7083 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=2954, Invalid=15952, Unknown=0, NotChecked=0, Total=18906 [2024-10-11 03:21:36,103 INFO L432 NwaCegarLoop]: 105 mSDtfsCounter, 4112 mSDsluCounter, 2341 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 57 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4112 SdHoareTripleChecker+Valid, 2446 SdHoareTripleChecker+Invalid, 1738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 57 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:36,103 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4112 Valid, 2446 Invalid, 1738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [57 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2024-10-11 03:21:36,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19834 states. [2024-10-11 03:21:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19834 to 16728. [2024-10-11 03:21:36,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16728 states, 16727 states have (on average 1.4562683087224249) internal successors, (24359), 16727 states have internal predecessors, (24359), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:36,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16728 states to 16728 states and 24359 transitions. [2024-10-11 03:21:36,819 INFO L78 Accepts]: Start accepts. Automaton has 16728 states and 24359 transitions. Word has length 89 [2024-10-11 03:21:36,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:36,820 INFO L471 AbstractCegarLoop]: Abstraction has 16728 states and 24359 transitions. [2024-10-11 03:21:36,824 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 13.1) internal successors, (262), 20 states have internal predecessors, (262), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:36,825 INFO L276 IsEmpty]: Start isEmpty. Operand 16728 states and 24359 transitions. [2024-10-11 03:21:36,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 03:21:36,826 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:36,826 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:36,843 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 03:21:37,027 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-10-11 03:21:37,028 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:37,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:37,028 INFO L85 PathProgramCache]: Analyzing trace with hash 1693774697, now seen corresponding path program 1 times [2024-10-11 03:21:37,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:37,028 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [846447814] [2024-10-11 03:21:37,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:37,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:37,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:37,312 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-11 03:21:37,313 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:37,313 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [846447814] [2024-10-11 03:21:37,313 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [846447814] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:37,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:37,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:37,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1769279789] [2024-10-11 03:21:37,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:37,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:37,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:37,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:37,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:37,316 INFO L87 Difference]: Start difference. First operand 16728 states and 24359 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:38,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:38,326 INFO L93 Difference]: Finished difference Result 58792 states and 86321 transitions. [2024-10-11 03:21:38,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:38,326 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-11 03:21:38,327 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:38,429 INFO L225 Difference]: With dead ends: 58792 [2024-10-11 03:21:38,429 INFO L226 Difference]: Without dead ends: 50178 [2024-10-11 03:21:38,449 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:38,450 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 851 mSDsluCounter, 775 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 1002 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:38,451 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 1002 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:38,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50178 states. [2024-10-11 03:21:39,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50178 to 25036. [2024-10-11 03:21:39,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25036 states, 25035 states have (on average 1.4512083083682843) internal successors, (36331), 25035 states have internal predecessors, (36331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:39,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25036 states to 25036 states and 36331 transitions. [2024-10-11 03:21:39,915 INFO L78 Accepts]: Start accepts. Automaton has 25036 states and 36331 transitions. Word has length 90 [2024-10-11 03:21:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:39,915 INFO L471 AbstractCegarLoop]: Abstraction has 25036 states and 36331 transitions. [2024-10-11 03:21:39,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 7 states have internal predecessors, (85), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:39,916 INFO L276 IsEmpty]: Start isEmpty. Operand 25036 states and 36331 transitions. [2024-10-11 03:21:39,917 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 03:21:39,917 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:39,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:39,931 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-11 03:21:39,931 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:39,935 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash -468780697, now seen corresponding path program 1 times [2024-10-11 03:21:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:39,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1514496492] [2024-10-11 03:21:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:39,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:40,138 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2024-10-11 03:21:40,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:40,139 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1514496492] [2024-10-11 03:21:40,139 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1514496492] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:40,139 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:40,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:40,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409565299] [2024-10-11 03:21:40,139 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:40,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:40,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:40,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:40,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:40,142 INFO L87 Difference]: Start difference. First operand 25036 states and 36331 transitions. Second operand has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:41,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:41,661 INFO L93 Difference]: Finished difference Result 67100 states and 98293 transitions. [2024-10-11 03:21:41,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:41,662 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 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 90 [2024-10-11 03:21:41,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:41,734 INFO L225 Difference]: With dead ends: 67100 [2024-10-11 03:21:41,734 INFO L226 Difference]: Without dead ends: 58486 [2024-10-11 03:21:41,750 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:41,750 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 940 mSDsluCounter, 682 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 940 SdHoareTripleChecker+Valid, 906 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:41,750 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [940 Valid, 906 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:41,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58486 states. [2024-10-11 03:21:42,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58486 to 33344. [2024-10-11 03:21:42,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33344 states, 33343 states have (on average 1.4486698857331375) internal successors, (48303), 33343 states have internal predecessors, (48303), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:42,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33344 states to 33344 states and 48303 transitions. [2024-10-11 03:21:42,912 INFO L78 Accepts]: Start accepts. Automaton has 33344 states and 48303 transitions. Word has length 90 [2024-10-11 03:21:42,913 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:42,913 INFO L471 AbstractCegarLoop]: Abstraction has 33344 states and 48303 transitions. [2024-10-11 03:21:42,913 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.0) internal successors, (84), 7 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:42,913 INFO L276 IsEmpty]: Start isEmpty. Operand 33344 states and 48303 transitions. [2024-10-11 03:21:42,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 03:21:42,915 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:42,915 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:42,915 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 03:21:42,915 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:42,916 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:42,916 INFO L85 PathProgramCache]: Analyzing trace with hash 1399755363, now seen corresponding path program 1 times [2024-10-11 03:21:42,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:42,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505102501] [2024-10-11 03:21:42,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:42,916 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:43,068 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 03:21:43,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:43,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505102501] [2024-10-11 03:21:43,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505102501] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:43,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:43,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:43,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931472087] [2024-10-11 03:21:43,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:43,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:43,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:43,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:43,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:43,071 INFO L87 Difference]: Start difference. First operand 33344 states and 48303 transitions. Second operand has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:44,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:44,481 INFO L93 Difference]: Finished difference Result 75408 states and 110265 transitions. [2024-10-11 03:21:44,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:44,482 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 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 90 [2024-10-11 03:21:44,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:44,639 INFO L225 Difference]: With dead ends: 75408 [2024-10-11 03:21:44,639 INFO L226 Difference]: Without dead ends: 66794 [2024-10-11 03:21:44,657 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:44,658 INFO L432 NwaCegarLoop]: 224 mSDtfsCounter, 896 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 896 SdHoareTripleChecker+Valid, 958 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:44,658 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [896 Valid, 958 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:44,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66794 states. [2024-10-11 03:21:45,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66794 to 41652. [2024-10-11 03:21:46,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41652 states, 41651 states have (on average 1.447144126191448) internal successors, (60275), 41651 states have internal predecessors, (60275), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:46,082 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41652 states to 41652 states and 60275 transitions. [2024-10-11 03:21:46,086 INFO L78 Accepts]: Start accepts. Automaton has 41652 states and 60275 transitions. Word has length 90 [2024-10-11 03:21:46,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:46,086 INFO L471 AbstractCegarLoop]: Abstraction has 41652 states and 60275 transitions. [2024-10-11 03:21:46,086 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.714285714285714) internal successors, (82), 7 states have internal predecessors, (82), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:46,086 INFO L276 IsEmpty]: Start isEmpty. Operand 41652 states and 60275 transitions. [2024-10-11 03:21:46,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 03:21:46,089 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:46,089 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:46,089 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-11 03:21:46,089 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:46,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:46,090 INFO L85 PathProgramCache]: Analyzing trace with hash 2024255077, now seen corresponding path program 1 times [2024-10-11 03:21:46,090 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:46,090 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64171611] [2024-10-11 03:21:46,090 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:46,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:46,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:46,231 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 03:21:46,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:46,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64171611] [2024-10-11 03:21:46,233 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64171611] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:46,233 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:46,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:46,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1536400601] [2024-10-11 03:21:46,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:46,233 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:46,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:46,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:46,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:46,235 INFO L87 Difference]: Start difference. First operand 41652 states and 60275 transitions. Second operand has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:48,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:48,746 INFO L93 Difference]: Finished difference Result 83716 states and 122237 transitions. [2024-10-11 03:21:48,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:48,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 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 90 [2024-10-11 03:21:48,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:48,886 INFO L225 Difference]: With dead ends: 83716 [2024-10-11 03:21:48,886 INFO L226 Difference]: Without dead ends: 75102 [2024-10-11 03:21:48,935 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:48,936 INFO L432 NwaCegarLoop]: 230 mSDtfsCounter, 784 mSDsluCounter, 854 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:48,936 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1084 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:49,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75102 states. [2024-10-11 03:21:50,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75102 to 49960. [2024-10-11 03:21:51,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49960 states, 49959 states have (on average 1.4461258231750036) internal successors, (72247), 49959 states have internal predecessors, (72247), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:51,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49960 states to 49960 states and 72247 transitions. [2024-10-11 03:21:51,137 INFO L78 Accepts]: Start accepts. Automaton has 49960 states and 72247 transitions. Word has length 90 [2024-10-11 03:21:51,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:51,137 INFO L471 AbstractCegarLoop]: Abstraction has 49960 states and 72247 transitions. [2024-10-11 03:21:51,137 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.857142857142858) internal successors, (83), 7 states have internal predecessors, (83), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:51,137 INFO L276 IsEmpty]: Start isEmpty. Operand 49960 states and 72247 transitions. [2024-10-11 03:21:51,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2024-10-11 03:21:51,144 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:51,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:51,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-11 03:21:51,144 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:51,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:51,145 INFO L85 PathProgramCache]: Analyzing trace with hash -1801917206, now seen corresponding path program 1 times [2024-10-11 03:21:51,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:51,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1351232542] [2024-10-11 03:21:51,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:51,146 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:51,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:51,297 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-11 03:21:51,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:51,298 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1351232542] [2024-10-11 03:21:51,298 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1351232542] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:51,301 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:51,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 03:21:51,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431303591] [2024-10-11 03:21:51,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:51,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 03:21:51,302 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:51,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 03:21:51,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 03:21:51,302 INFO L87 Difference]: Start difference. First operand 49960 states and 72247 transitions. Second operand has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:53,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:53,373 INFO L93 Difference]: Finished difference Result 90176 states and 131429 transitions. [2024-10-11 03:21:53,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 03:21:53,373 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 90 [2024-10-11 03:21:53,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:53,469 INFO L225 Difference]: With dead ends: 90176 [2024-10-11 03:21:53,469 INFO L226 Difference]: Without dead ends: 82746 [2024-10-11 03:21:53,490 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2024-10-11 03:21:53,490 INFO L432 NwaCegarLoop]: 228 mSDtfsCounter, 849 mSDsluCounter, 922 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 1150 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:53,491 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 1150 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 03:21:53,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82746 states. [2024-10-11 03:21:55,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82746 to 57604. [2024-10-11 03:21:55,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57604 states, 57603 states have (on average 1.4449073832960089) internal successors, (83231), 57603 states have internal predecessors, (83231), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:55,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57604 states to 57604 states and 83231 transitions. [2024-10-11 03:21:55,480 INFO L78 Accepts]: Start accepts. Automaton has 57604 states and 83231 transitions. Word has length 90 [2024-10-11 03:21:55,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:55,481 INFO L471 AbstractCegarLoop]: Abstraction has 57604 states and 83231 transitions. [2024-10-11 03:21:55,481 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.714285714285714) internal successors, (89), 7 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:55,481 INFO L276 IsEmpty]: Start isEmpty. Operand 57604 states and 83231 transitions. [2024-10-11 03:21:55,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-11 03:21:55,484 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:55,484 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:55,484 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-11 03:21:55,485 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:55,485 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:55,485 INFO L85 PathProgramCache]: Analyzing trace with hash 43054361, now seen corresponding path program 1 times [2024-10-11 03:21:55,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:55,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83684043] [2024-10-11 03:21:55,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:55,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:55,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:55,574 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:55,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83684043] [2024-10-11 03:21:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83684043] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:21:55,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:21:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:21:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235837242] [2024-10-11 03:21:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:21:55,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:21:55,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:21:55,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:21:55,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:21:55,576 INFO L87 Difference]: Start difference. First operand 57604 states and 83231 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:56,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:21:56,563 INFO L93 Difference]: Finished difference Result 80962 states and 116389 transitions. [2024-10-11 03:21:56,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:21:56,564 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-11 03:21:56,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:21:56,603 INFO L225 Difference]: With dead ends: 80962 [2024-10-11 03:21:56,603 INFO L226 Difference]: Without dead ends: 23396 [2024-10-11 03:21:56,648 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 [2024-10-11 03:21:56,650 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 47 mSDsluCounter, 105 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:21:56,651 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 261 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:21:56,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23396 states. [2024-10-11 03:21:57,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23396 to 18662. [2024-10-11 03:21:57,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18662 states, 18661 states have (on average 1.4368468999517712) internal successors, (26813), 18661 states have internal predecessors, (26813), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:57,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18662 states to 18662 states and 26813 transitions. [2024-10-11 03:21:57,285 INFO L78 Accepts]: Start accepts. Automaton has 18662 states and 26813 transitions. Word has length 93 [2024-10-11 03:21:57,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:21:57,285 INFO L471 AbstractCegarLoop]: Abstraction has 18662 states and 26813 transitions. [2024-10-11 03:21:57,285 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:21:57,285 INFO L276 IsEmpty]: Start isEmpty. Operand 18662 states and 26813 transitions. [2024-10-11 03:21:57,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-11 03:21:57,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:21:57,287 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:21:57,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-11 03:21:57,287 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:21:57,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:21:57,288 INFO L85 PathProgramCache]: Analyzing trace with hash 2120153594, now seen corresponding path program 1 times [2024-10-11 03:21:57,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:21:57,288 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1589271792] [2024-10-11 03:21:57,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:57,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:21:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:57,786 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 4 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:57,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:21:57,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1589271792] [2024-10-11 03:21:57,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1589271792] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 03:21:57,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [349301671] [2024-10-11 03:21:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:21:57,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:21:57,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 03:21:57,792 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 03:21:57,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 03:21:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:21:57,900 INFO L255 TraceCheckSpWp]: Trace formula consists of 367 conjuncts, 25 conjuncts are in the unsatisfiable core [2024-10-11 03:21:57,903 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 03:21:59,006 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:21:59,007 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 03:22:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:22:01,062 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [349301671] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 03:22:01,062 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 03:22:01,062 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 13, 12] total 31 [2024-10-11 03:22:01,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532791139] [2024-10-11 03:22:01,062 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 03:22:01,063 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-10-11 03:22:01,063 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:22:01,064 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-10-11 03:22:01,064 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=800, Unknown=0, NotChecked=0, Total=930 [2024-10-11 03:22:01,064 INFO L87 Difference]: Start difference. First operand 18662 states and 26813 transitions. Second operand has 31 states, 31 states have (on average 8.35483870967742) internal successors, (259), 31 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:28,944 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:22:28,944 INFO L93 Difference]: Finished difference Result 317363 states and 449733 transitions. [2024-10-11 03:22:28,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 297 states. [2024-10-11 03:22:28,945 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 31 states have (on average 8.35483870967742) internal successors, (259), 31 states have internal predecessors, (259), 0 states have call successors, (0), 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 93 [2024-10-11 03:22:28,945 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:22:29,357 INFO L225 Difference]: With dead ends: 317363 [2024-10-11 03:22:29,358 INFO L226 Difference]: Without dead ends: 298746 [2024-10-11 03:22:29,443 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 487 GetRequests, 163 SyntacticMatches, 0 SemanticMatches, 324 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47853 ImplicationChecksByTransitivity, 19.6s TimeCoverageRelationStatistics Valid=13858, Invalid=92092, Unknown=0, NotChecked=0, Total=105950 [2024-10-11 03:22:29,444 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 13691 mSDsluCounter, 2207 mSDsCounter, 0 mSdLazyCounter, 2559 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13691 SdHoareTripleChecker+Valid, 2363 SdHoareTripleChecker+Invalid, 2886 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 2559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2024-10-11 03:22:29,444 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13691 Valid, 2363 Invalid, 2886 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 2559 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2024-10-11 03:22:29,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298746 states. [2024-10-11 03:22:36,063 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298746 to 164008. [2024-10-11 03:22:36,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 164008 states, 164007 states have (on average 1.4066106934460114) internal successors, (230694), 164007 states have internal predecessors, (230694), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:36,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164008 states to 164008 states and 230694 transitions. [2024-10-11 03:22:36,678 INFO L78 Accepts]: Start accepts. Automaton has 164008 states and 230694 transitions. Word has length 93 [2024-10-11 03:22:36,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:22:36,678 INFO L471 AbstractCegarLoop]: Abstraction has 164008 states and 230694 transitions. [2024-10-11 03:22:36,678 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 31 states have (on average 8.35483870967742) internal successors, (259), 31 states have internal predecessors, (259), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:36,679 INFO L276 IsEmpty]: Start isEmpty. Operand 164008 states and 230694 transitions. [2024-10-11 03:22:36,694 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-10-11 03:22:36,694 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:22:36,694 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:22:36,712 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 03:22:36,895 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 03:22:36,895 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:22:36,897 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:22:36,897 INFO L85 PathProgramCache]: Analyzing trace with hash 426629493, now seen corresponding path program 1 times [2024-10-11 03:22:36,897 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:22:36,898 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [707082583] [2024-10-11 03:22:36,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:22:36,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:22:36,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:22:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:22:37,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:22:37,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [707082583] [2024-10-11 03:22:37,048 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [707082583] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:22:37,048 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:22:37,048 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:22:37,050 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764169726] [2024-10-11 03:22:37,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:22:37,051 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:22:37,051 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:22:37,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:22:37,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:22:37,052 INFO L87 Difference]: Start difference. First operand 164008 states and 230694 transitions. Second operand has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:41,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 03:22:41,291 INFO L93 Difference]: Finished difference Result 245684 states and 345979 transitions. [2024-10-11 03:22:41,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 03:22:41,292 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 93 [2024-10-11 03:22:41,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 03:22:41,482 INFO L225 Difference]: With dead ends: 245684 [2024-10-11 03:22:41,482 INFO L226 Difference]: Without dead ends: 86843 [2024-10-11 03:22:41,612 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 [2024-10-11 03:22:41,613 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 38 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 03:22:41,613 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 239 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 03:22:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86843 states. [2024-10-11 03:22:45,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86843 to 86841. [2024-10-11 03:22:45,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86841 states, 86840 states have (on average 1.390776140027637) internal successors, (120775), 86840 states have internal predecessors, (120775), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:45,957 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86841 states to 86841 states and 120775 transitions. [2024-10-11 03:22:45,966 INFO L78 Accepts]: Start accepts. Automaton has 86841 states and 120775 transitions. Word has length 93 [2024-10-11 03:22:45,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 03:22:45,967 INFO L471 AbstractCegarLoop]: Abstraction has 86841 states and 120775 transitions. [2024-10-11 03:22:45,967 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 31.0) internal successors, (93), 3 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 03:22:45,967 INFO L276 IsEmpty]: Start isEmpty. Operand 86841 states and 120775 transitions. [2024-10-11 03:22:45,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-10-11 03:22:45,971 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 03:22:45,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 03:22:45,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-11 03:22:45,972 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-10-11 03:22:45,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 03:22:45,972 INFO L85 PathProgramCache]: Analyzing trace with hash 586752848, now seen corresponding path program 1 times [2024-10-11 03:22:45,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 03:22:45,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1479031374] [2024-10-11 03:22:45,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 03:22:45,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 03:22:45,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 03:22:46,020 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 03:22:46,020 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 03:22:46,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1479031374] [2024-10-11 03:22:46,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1479031374] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 03:22:46,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 03:22:46,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 03:22:46,021 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228098318] [2024-10-11 03:22:46,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 03:22:46,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 03:22:46,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 03:22:46,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 03:22:46,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 03:22:46,023 INFO L87 Difference]: Start difference. First operand 86841 states and 120775 transitions. Second operand has 3 states, 3 states have (on average 31.333333333333332) internal successors, (94), 3 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0)