/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:01:31,882 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:01:31,884 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:01:31,921 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 02:01:31,930 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:01:31,931 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:01:31,932 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:01:31,933 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:01:31,934 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:01:31,936 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:01:31,937 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:01:31,942 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:01:31,945 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:01:31,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:01:31,947 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:01:31,947 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:01:31,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:01:31,954 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:01:31,955 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:01:31,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:01:31,956 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 02:01:31,983 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:01:31,983 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:01:31,984 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:01:31,984 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:01:31,985 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:01:31,986 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:01:31,986 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:01:31,986 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:01:31,986 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:01:31,986 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:01:31,987 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:01:31,987 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:01:31,987 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:01:31,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:01:31,989 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:01:31,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:01:31,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:01:31,990 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:01:32,243 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:01:32,264 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:01:32,266 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:01:32,267 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:01:32,268 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:01:32,269 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 02:01:33,437 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:01:33,696 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:01:33,696 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 02:01:33,709 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4330a2a71/4ea8b223f16f4097bdd8ceaea51f342a/FLAGa450848c4 [2023-03-31 02:01:33,722 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4330a2a71/4ea8b223f16f4097bdd8ceaea51f342a [2023-03-31 02:01:33,724 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:01:33,726 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:01:33,727 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:01:33,727 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:01:33,730 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:01:33,730 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:01:33" (1/1) ... [2023-03-31 02:01:33,731 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7874be23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:33, skipping insertion in model container [2023-03-31 02:01:33,731 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:01:33" (1/1) ... [2023-03-31 02:01:33,738 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:01:33,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:01:34,079 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-03-31 02:01:34,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:01:34,179 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:01:34,233 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c[13826,13839] [2023-03-31 02:01:34,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:01:34,283 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:01:34,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34 WrapperNode [2023-03-31 02:01:34,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:01:34,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:01:34,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:01:34,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:01:34,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,333 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,333 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,371 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,391 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,396 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,413 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:01:34,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:01:34,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:01:34,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:01:34,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (1/1) ... [2023-03-31 02:01:34,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:01:34,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:01:34,448 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 02:01:34,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 02:01:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:01:34,478 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:01:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:01:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:01:34,480 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:01:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:01:34,480 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uchar [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:01:34,481 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:01:34,482 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:01:34,483 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:01:34,701 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:01:34,706 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:01:35,677 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:01:35,685 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:01:35,686 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:01:35,688 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:01:35 BoogieIcfgContainer [2023-03-31 02:01:35,688 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:01:35,690 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:01:35,690 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:01:35,693 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:01:35,693 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:01:33" (1/3) ... [2023-03-31 02:01:35,693 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d6260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:01:35, skipping insertion in model container [2023-03-31 02:01:35,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:01:34" (2/3) ... [2023-03-31 02:01:35,694 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@302d6260 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:01:35, skipping insertion in model container [2023-03-31 02:01:35,694 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:01:35" (3/3) ... [2023-03-31 02:01:35,695 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.2.ufo.UNBOUNDED.pals.c.v+cfa-reducer.c [2023-03-31 02:01:35,710 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:01:35,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:01:35,770 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:01:35,781 INFO L357 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, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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;@4517492e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:01:35,781 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:01:35,789 INFO L276 IsEmpty]: Start isEmpty. Operand has 362 states, 349 states have (on average 1.7851002865329513) internal successors, (623), 357 states have internal predecessors, (623), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 02:01:35,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2023-03-31 02:01:35,812 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:35,813 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:35,813 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:35,817 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:35,817 INFO L85 PathProgramCache]: Analyzing trace with hash -1461518113, now seen corresponding path program 1 times [2023-03-31 02:01:35,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:35,823 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2053995600] [2023-03-31 02:01:35,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:35,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:36,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:36,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:36,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:36,874 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:36,874 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2053995600] [2023-03-31 02:01:36,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2053995600] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:36,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:36,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:36,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2090396501] [2023-03-31 02:01:36,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:36,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:36,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:36,917 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:36,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:36,921 INFO L87 Difference]: Start difference. First operand has 362 states, 349 states have (on average 1.7851002865329513) internal successors, (623), 357 states have internal predecessors, (623), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:38,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:38,948 INFO L93 Difference]: Finished difference Result 678 states and 1131 transitions. [2023-03-31 02:01:38,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:38,950 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 122 [2023-03-31 02:01:38,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:38,961 INFO L225 Difference]: With dead ends: 678 [2023-03-31 02:01:38,961 INFO L226 Difference]: Without dead ends: 492 [2023-03-31 02:01:38,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:38,968 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 270 mSDsluCounter, 536 mSDsCounter, 0 mSdLazyCounter, 649 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 1156 SdHoareTripleChecker+Invalid, 656 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:38,968 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 1156 Invalid, 656 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 649 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 02:01:38,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-03-31 02:01:39,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 489. [2023-03-31 02:01:39,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 489 states, 485 states have (on average 1.6247422680412371) internal successors, (788), 485 states have internal predecessors, (788), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:39,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 489 states to 489 states and 791 transitions. [2023-03-31 02:01:39,038 INFO L78 Accepts]: Start accepts. Automaton has 489 states and 791 transitions. Word has length 122 [2023-03-31 02:01:39,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:39,039 INFO L495 AbstractCegarLoop]: Abstraction has 489 states and 791 transitions. [2023-03-31 02:01:39,039 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.75) internal successors, (119), 3 states have internal predecessors, (119), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:39,039 INFO L276 IsEmpty]: Start isEmpty. Operand 489 states and 791 transitions. [2023-03-31 02:01:39,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2023-03-31 02:01:39,043 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:39,043 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:39,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:01:39,043 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:39,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:39,044 INFO L85 PathProgramCache]: Analyzing trace with hash -982632352, now seen corresponding path program 1 times [2023-03-31 02:01:39,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:39,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497262751] [2023-03-31 02:01:39,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:39,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:39,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:39,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:39,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:39,552 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:39,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:39,553 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497262751] [2023-03-31 02:01:39,553 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497262751] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:39,553 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:39,553 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:39,553 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1466762105] [2023-03-31 02:01:39,553 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:39,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:39,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:39,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:39,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:39,556 INFO L87 Difference]: Start difference. First operand 489 states and 791 transitions. Second operand has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:41,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:41,164 INFO L93 Difference]: Finished difference Result 1053 states and 1703 transitions. [2023-03-31 02:01:41,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:41,165 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 125 [2023-03-31 02:01:41,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:41,170 INFO L225 Difference]: With dead ends: 1053 [2023-03-31 02:01:41,172 INFO L226 Difference]: Without dead ends: 761 [2023-03-31 02:01:41,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:41,179 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 223 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 223 SdHoareTripleChecker+Valid, 1082 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:41,181 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [223 Valid, 1082 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:41,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2023-03-31 02:01:41,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 757. [2023-03-31 02:01:41,240 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 757 states, 753 states have (on average 1.6188579017264275) internal successors, (1219), 753 states have internal predecessors, (1219), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:41,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 757 states to 757 states and 1222 transitions. [2023-03-31 02:01:41,244 INFO L78 Accepts]: Start accepts. Automaton has 757 states and 1222 transitions. Word has length 125 [2023-03-31 02:01:41,245 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:41,245 INFO L495 AbstractCegarLoop]: Abstraction has 757 states and 1222 transitions. [2023-03-31 02:01:41,245 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.5) internal successors, (122), 3 states have internal predecessors, (122), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:41,245 INFO L276 IsEmpty]: Start isEmpty. Operand 757 states and 1222 transitions. [2023-03-31 02:01:41,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2023-03-31 02:01:41,248 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:41,249 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:41,249 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:01:41,249 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:41,249 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:41,250 INFO L85 PathProgramCache]: Analyzing trace with hash 810792296, now seen corresponding path program 1 times [2023-03-31 02:01:41,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:41,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975222315] [2023-03-31 02:01:41,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:41,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:41,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:41,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:41,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:41,771 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:41,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:41,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975222315] [2023-03-31 02:01:41,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975222315] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:41,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:41,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:41,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32550895] [2023-03-31 02:01:41,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:41,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:41,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:41,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:41,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:41,774 INFO L87 Difference]: Start difference. First operand 757 states and 1222 transitions. Second operand has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:43,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:43,371 INFO L93 Difference]: Finished difference Result 1837 states and 2960 transitions. [2023-03-31 02:01:43,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:43,372 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 128 [2023-03-31 02:01:43,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:43,377 INFO L225 Difference]: With dead ends: 1837 [2023-03-31 02:01:43,377 INFO L226 Difference]: Without dead ends: 1277 [2023-03-31 02:01:43,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:43,381 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 216 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1083 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:43,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1083 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:43,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1277 states. [2023-03-31 02:01:43,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1277 to 1271. [2023-03-31 02:01:43,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1271 states, 1267 states have (on average 1.6093133385951066) internal successors, (2039), 1267 states have internal predecessors, (2039), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:43,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1271 states to 1271 states and 2042 transitions. [2023-03-31 02:01:43,457 INFO L78 Accepts]: Start accepts. Automaton has 1271 states and 2042 transitions. Word has length 128 [2023-03-31 02:01:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:43,458 INFO L495 AbstractCegarLoop]: Abstraction has 1271 states and 2042 transitions. [2023-03-31 02:01:43,458 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 31.25) internal successors, (125), 3 states have internal predecessors, (125), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:43,458 INFO L276 IsEmpty]: Start isEmpty. Operand 1271 states and 2042 transitions. [2023-03-31 02:01:43,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2023-03-31 02:01:43,460 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:43,460 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:43,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:01:43,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:43,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:43,461 INFO L85 PathProgramCache]: Analyzing trace with hash -2064693553, now seen corresponding path program 1 times [2023-03-31 02:01:43,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:43,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754729622] [2023-03-31 02:01:43,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:43,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:43,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:43,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:43,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:43,952 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:43,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:43,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754729622] [2023-03-31 02:01:43,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754729622] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:43,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:43,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:43,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102532176] [2023-03-31 02:01:43,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:43,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:43,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:43,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:43,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:43,955 INFO L87 Difference]: Start difference. First operand 1271 states and 2042 transitions. Second operand has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:45,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:45,710 INFO L93 Difference]: Finished difference Result 3339 states and 5348 transitions. [2023-03-31 02:01:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 131 [2023-03-31 02:01:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:45,724 INFO L225 Difference]: With dead ends: 3339 [2023-03-31 02:01:45,724 INFO L226 Difference]: Without dead ends: 2265 [2023-03-31 02:01:45,726 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:45,734 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 209 mSDsluCounter, 522 mSDsCounter, 0 mSdLazyCounter, 577 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1084 SdHoareTripleChecker+Invalid, 580 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:45,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1084 Invalid, 580 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 577 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:45,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2265 states. [2023-03-31 02:01:45,864 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2265 to 2255. [2023-03-31 02:01:45,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2255 states, 2251 states have (on average 1.5970679697912038) internal successors, (3595), 2251 states have internal predecessors, (3595), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:45,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2255 states to 2255 states and 3598 transitions. [2023-03-31 02:01:45,880 INFO L78 Accepts]: Start accepts. Automaton has 2255 states and 3598 transitions. Word has length 131 [2023-03-31 02:01:45,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:45,881 INFO L495 AbstractCegarLoop]: Abstraction has 2255 states and 3598 transitions. [2023-03-31 02:01:45,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 32.0) internal successors, (128), 3 states have internal predecessors, (128), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:45,881 INFO L276 IsEmpty]: Start isEmpty. Operand 2255 states and 3598 transitions. [2023-03-31 02:01:45,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-03-31 02:01:45,883 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:45,883 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:45,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:01:45,884 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:45,884 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:45,884 INFO L85 PathProgramCache]: Analyzing trace with hash -1196198723, now seen corresponding path program 1 times [2023-03-31 02:01:45,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:45,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [909724438] [2023-03-31 02:01:45,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:45,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:45,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:46,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:46,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:46,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:46,449 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:46,449 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [909724438] [2023-03-31 02:01:46,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [909724438] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:46,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:46,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 02:01:46,450 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [803736790] [2023-03-31 02:01:46,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:46,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 02:01:46,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:46,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 02:01:46,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:01:46,456 INFO L87 Difference]: Start difference. First operand 2255 states and 3598 transitions. Second operand has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:48,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:48,793 INFO L93 Difference]: Finished difference Result 11791 states and 18938 transitions. [2023-03-31 02:01:48,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-03-31 02:01:48,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 134 [2023-03-31 02:01:48,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:48,833 INFO L225 Difference]: With dead ends: 11791 [2023-03-31 02:01:48,834 INFO L226 Difference]: Without dead ends: 9709 [2023-03-31 02:01:48,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2023-03-31 02:01:48,845 INFO L413 NwaCegarLoop]: 563 mSDtfsCounter, 2328 mSDsluCounter, 3680 mSDsCounter, 0 mSdLazyCounter, 667 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2328 SdHoareTripleChecker+Valid, 4243 SdHoareTripleChecker+Invalid, 685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 667 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:48,846 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2328 Valid, 4243 Invalid, 685 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 667 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:01:48,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9709 states. [2023-03-31 02:01:49,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9709 to 4126. [2023-03-31 02:01:49,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4126 states, 4122 states have (on average 1.6038330907326541) internal successors, (6611), 4122 states have internal predecessors, (6611), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:49,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4126 states to 4126 states and 6614 transitions. [2023-03-31 02:01:49,265 INFO L78 Accepts]: Start accepts. Automaton has 4126 states and 6614 transitions. Word has length 134 [2023-03-31 02:01:49,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:49,265 INFO L495 AbstractCegarLoop]: Abstraction has 4126 states and 6614 transitions. [2023-03-31 02:01:49,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 18.714285714285715) internal successors, (131), 6 states have internal predecessors, (131), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:49,266 INFO L276 IsEmpty]: Start isEmpty. Operand 4126 states and 6614 transitions. [2023-03-31 02:01:49,269 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2023-03-31 02:01:49,269 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:49,269 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:49,269 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:01:49,269 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:49,270 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:49,270 INFO L85 PathProgramCache]: Analyzing trace with hash 1506376995, now seen corresponding path program 1 times [2023-03-31 02:01:49,270 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:49,270 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1718953279] [2023-03-31 02:01:49,270 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:49,270 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:49,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:49,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:49,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:49,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:49,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:49,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1718953279] [2023-03-31 02:01:49,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1718953279] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:49,702 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:49,702 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:01:49,702 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084473414] [2023-03-31 02:01:49,702 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:49,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:01:49,702 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:49,703 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:01:49,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:49,703 INFO L87 Difference]: Start difference. First operand 4126 states and 6614 transitions. Second operand has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:51,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:51,866 INFO L93 Difference]: Finished difference Result 12097 states and 19439 transitions. [2023-03-31 02:01:51,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-03-31 02:01:51,867 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 135 [2023-03-31 02:01:51,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:51,902 INFO L225 Difference]: With dead ends: 12097 [2023-03-31 02:01:51,902 INFO L226 Difference]: Without dead ends: 8168 [2023-03-31 02:01:51,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:01:51,913 INFO L413 NwaCegarLoop]: 565 mSDtfsCounter, 727 mSDsluCounter, 1319 mSDsCounter, 0 mSdLazyCounter, 606 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 727 SdHoareTripleChecker+Valid, 1884 SdHoareTripleChecker+Invalid, 613 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 606 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:51,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [727 Valid, 1884 Invalid, 613 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 606 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:51,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8168 states. [2023-03-31 02:01:52,459 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8168 to 6123. [2023-03-31 02:01:52,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6123 states, 6119 states have (on average 1.6027128615786894) internal successors, (9807), 6119 states have internal predecessors, (9807), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:52,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6123 states to 6123 states and 9810 transitions. [2023-03-31 02:01:52,491 INFO L78 Accepts]: Start accepts. Automaton has 6123 states and 9810 transitions. Word has length 135 [2023-03-31 02:01:52,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:52,492 INFO L495 AbstractCegarLoop]: Abstraction has 6123 states and 9810 transitions. [2023-03-31 02:01:52,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 26.4) internal successors, (132), 4 states have internal predecessors, (132), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:52,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6123 states and 9810 transitions. [2023-03-31 02:01:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 02:01:52,496 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:52,496 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:52,496 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:01:52,497 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:52,497 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:52,497 INFO L85 PathProgramCache]: Analyzing trace with hash 249295432, now seen corresponding path program 1 times [2023-03-31 02:01:52,497 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:52,497 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752756433] [2023-03-31 02:01:52,497 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:52,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:52,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:52,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:52,897 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:52,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:52,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752756433] [2023-03-31 02:01:52,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752756433] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:52,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:52,898 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:52,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502690016] [2023-03-31 02:01:52,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:52,899 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:52,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:52,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:52,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:52,900 INFO L87 Difference]: Start difference. First operand 6123 states and 9810 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:54,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:54,948 INFO L93 Difference]: Finished difference Result 11963 states and 19163 transitions. [2023-03-31 02:01:54,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:54,949 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 02:01:54,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:54,975 INFO L225 Difference]: With dead ends: 11963 [2023-03-31 02:01:54,975 INFO L226 Difference]: Without dead ends: 8751 [2023-03-31 02:01:54,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:54,984 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 215 mSDsluCounter, 520 mSDsCounter, 0 mSdLazyCounter, 653 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 657 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 653 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:54,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 1167 Invalid, 657 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 653 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:01:54,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8751 states. [2023-03-31 02:01:55,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8751 to 8749. [2023-03-31 02:01:55,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8749 states, 8745 states have (on average 1.5951972555746141) internal successors, (13950), 8745 states have internal predecessors, (13950), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:55,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8749 states to 8749 states and 13953 transitions. [2023-03-31 02:01:55,766 INFO L78 Accepts]: Start accepts. Automaton has 8749 states and 13953 transitions. Word has length 138 [2023-03-31 02:01:55,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:55,767 INFO L495 AbstractCegarLoop]: Abstraction has 8749 states and 13953 transitions. [2023-03-31 02:01:55,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:55,768 INFO L276 IsEmpty]: Start isEmpty. Operand 8749 states and 13953 transitions. [2023-03-31 02:01:55,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 02:01:55,771 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:55,771 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:55,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:01:55,772 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:55,772 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:55,772 INFO L85 PathProgramCache]: Analyzing trace with hash 398072684, now seen corresponding path program 1 times [2023-03-31 02:01:55,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:55,772 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167847086] [2023-03-31 02:01:55,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:55,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:56,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:01:56,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:01:56,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:01:56,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:01:56,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167847086] [2023-03-31 02:01:56,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167847086] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:01:56,237 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:01:56,237 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:01:56,237 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147957584] [2023-03-31 02:01:56,237 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:01:56,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:01:56,238 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:01:56,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:01:56,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:01:56,238 INFO L87 Difference]: Start difference. First operand 8749 states and 13953 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:58,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:01:58,390 INFO L93 Difference]: Finished difference Result 16795 states and 26795 transitions. [2023-03-31 02:01:58,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:01:58,391 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 02:01:58,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:01:58,425 INFO L225 Difference]: With dead ends: 16795 [2023-03-31 02:01:58,425 INFO L226 Difference]: Without dead ends: 12301 [2023-03-31 02:01:58,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:01:58,437 INFO L413 NwaCegarLoop]: 613 mSDtfsCounter, 208 mSDsluCounter, 521 mSDsCounter, 0 mSdLazyCounter, 619 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1134 SdHoareTripleChecker+Invalid, 623 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 619 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 02:01:58,437 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1134 Invalid, 623 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 619 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 02:01:58,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2023-03-31 02:01:59,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12299. [2023-03-31 02:01:59,487 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12299 states, 12295 states have (on average 1.5877999186661245) internal successors, (19522), 12295 states have internal predecessors, (19522), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:59,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12299 states to 12299 states and 19525 transitions. [2023-03-31 02:01:59,516 INFO L78 Accepts]: Start accepts. Automaton has 12299 states and 19525 transitions. Word has length 138 [2023-03-31 02:01:59,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:01:59,517 INFO L495 AbstractCegarLoop]: Abstraction has 12299 states and 19525 transitions. [2023-03-31 02:01:59,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:01:59,517 INFO L276 IsEmpty]: Start isEmpty. Operand 12299 states and 19525 transitions. [2023-03-31 02:01:59,519 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 02:01:59,519 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:01:59,520 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:01:59,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 02:01:59,520 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:01:59,520 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:01:59,520 INFO L85 PathProgramCache]: Analyzing trace with hash 2019893880, now seen corresponding path program 1 times [2023-03-31 02:01:59,520 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:01:59,521 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417741290] [2023-03-31 02:01:59,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:01:59,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:01:59,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:00,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:00,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:00,045 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:00,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:00,046 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417741290] [2023-03-31 02:02:00,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417741290] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:00,046 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:00,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:00,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904912552] [2023-03-31 02:02:00,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:00,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:00,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:00,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:00,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:00,048 INFO L87 Difference]: Start difference. First operand 12299 states and 19525 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:02,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:02,780 INFO L93 Difference]: Finished difference Result 23067 states and 36645 transitions. [2023-03-31 02:02:02,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:02,781 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 02:02:02,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:02,821 INFO L225 Difference]: With dead ends: 23067 [2023-03-31 02:02:02,821 INFO L226 Difference]: Without dead ends: 16625 [2023-03-31 02:02:02,833 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:02,834 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 222 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 708 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 222 SdHoareTripleChecker+Valid, 1221 SdHoareTripleChecker+Invalid, 712 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:02,834 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [222 Valid, 1221 Invalid, 712 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 708 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2023-03-31 02:02:02,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16625 states. [2023-03-31 02:02:03,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16625 to 16623. [2023-03-31 02:02:03,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16623 states, 16619 states have (on average 1.580540345387809) internal successors, (26267), 16619 states have internal predecessors, (26267), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:04,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16623 states to 16623 states and 26270 transitions. [2023-03-31 02:02:04,000 INFO L78 Accepts]: Start accepts. Automaton has 16623 states and 26270 transitions. Word has length 138 [2023-03-31 02:02:04,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:04,000 INFO L495 AbstractCegarLoop]: Abstraction has 16623 states and 26270 transitions. [2023-03-31 02:02:04,001 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:04,001 INFO L276 IsEmpty]: Start isEmpty. Operand 16623 states and 26270 transitions. [2023-03-31 02:02:04,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2023-03-31 02:02:04,003 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:04,003 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:04,003 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 02:02:04,003 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:04,003 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:04,003 INFO L85 PathProgramCache]: Analyzing trace with hash -980094916, now seen corresponding path program 1 times [2023-03-31 02:02:04,004 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:04,004 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [552613450] [2023-03-31 02:02:04,004 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:04,004 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:04,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:04,416 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:04,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:04,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:04,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:04,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [552613450] [2023-03-31 02:02:04,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [552613450] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:04,430 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:04,430 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:04,430 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067390361] [2023-03-31 02:02:04,430 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:04,430 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:04,431 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:04,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:04,431 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:04,431 INFO L87 Difference]: Start difference. First operand 16623 states and 26270 transitions. Second operand has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:07,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:07,775 INFO L93 Difference]: Finished difference Result 36028 states and 56848 transitions. [2023-03-31 02:02:07,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:07,776 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 138 [2023-03-31 02:02:07,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:07,831 INFO L225 Difference]: With dead ends: 36028 [2023-03-31 02:02:07,831 INFO L226 Difference]: Without dead ends: 24488 [2023-03-31 02:02:07,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:07,856 INFO L413 NwaCegarLoop]: 752 mSDtfsCounter, 229 mSDsluCounter, 518 mSDsCounter, 0 mSdLazyCounter, 758 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 229 SdHoareTripleChecker+Valid, 1270 SdHoareTripleChecker+Invalid, 762 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 758 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:07,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [229 Valid, 1270 Invalid, 762 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 758 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:02:07,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24488 states. [2023-03-31 02:02:09,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24488 to 24486. [2023-03-31 02:02:09,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24486 states, 24482 states have (on average 1.5676415325545299) internal successors, (38379), 24482 states have internal predecessors, (38379), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:09,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24486 states to 24486 states and 38382 transitions. [2023-03-31 02:02:09,776 INFO L78 Accepts]: Start accepts. Automaton has 24486 states and 38382 transitions. Word has length 138 [2023-03-31 02:02:09,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:09,776 INFO L495 AbstractCegarLoop]: Abstraction has 24486 states and 38382 transitions. [2023-03-31 02:02:09,776 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 33.75) internal successors, (135), 3 states have internal predecessors, (135), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:09,777 INFO L276 IsEmpty]: Start isEmpty. Operand 24486 states and 38382 transitions. [2023-03-31 02:02:09,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2023-03-31 02:02:09,778 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:09,778 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:09,778 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 02:02:09,778 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:09,779 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:09,779 INFO L85 PathProgramCache]: Analyzing trace with hash -2143857320, now seen corresponding path program 1 times [2023-03-31 02:02:09,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:09,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1595012721] [2023-03-31 02:02:09,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:09,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:09,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:10,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:10,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:10,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:10,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1595012721] [2023-03-31 02:02:10,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1595012721] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:10,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:10,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 02:02:10,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883510238] [2023-03-31 02:02:10,528 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:10,528 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:02:10,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:10,529 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:02:10,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:02:10,529 INFO L87 Difference]: Start difference. First operand 24486 states and 38382 transitions. Second operand has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:14,873 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:14,873 INFO L93 Difference]: Finished difference Result 40501 states and 63135 transitions. [2023-03-31 02:02:14,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 02:02:14,874 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 144 [2023-03-31 02:02:14,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:15,044 INFO L225 Difference]: With dead ends: 40501 [2023-03-31 02:02:15,045 INFO L226 Difference]: Without dead ends: 40499 [2023-03-31 02:02:15,057 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:02:15,059 INFO L413 NwaCegarLoop]: 719 mSDtfsCounter, 477 mSDsluCounter, 1850 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 477 SdHoareTripleChecker+Valid, 2569 SdHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:15,059 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [477 Valid, 2569 Invalid, 748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-03-31 02:02:15,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40499 states. [2023-03-31 02:02:17,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40499 to 24806. [2023-03-31 02:02:17,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24806 states, 24802 states have (on average 1.557051850657205) internal successors, (38618), 24802 states have internal predecessors, (38618), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:17,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24806 states to 24806 states and 38621 transitions. [2023-03-31 02:02:17,276 INFO L78 Accepts]: Start accepts. Automaton has 24806 states and 38621 transitions. Word has length 144 [2023-03-31 02:02:17,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:17,277 INFO L495 AbstractCegarLoop]: Abstraction has 24806 states and 38621 transitions. [2023-03-31 02:02:17,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.5) internal successors, (141), 5 states have internal predecessors, (141), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 24806 states and 38621 transitions. [2023-03-31 02:02:17,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 181 [2023-03-31 02:02:17,282 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:17,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:17,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 02:02:17,283 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:17,283 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:17,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1332325505, now seen corresponding path program 1 times [2023-03-31 02:02:17,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:17,284 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1747349110] [2023-03-31 02:02:17,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:17,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:17,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:17,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:17,831 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-03-31 02:02:17,831 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:17,831 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1747349110] [2023-03-31 02:02:17,832 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1747349110] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:17,832 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:17,832 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-03-31 02:02:17,832 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1227014327] [2023-03-31 02:02:17,832 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:17,832 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-03-31 02:02:17,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:17,833 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-03-31 02:02:17,833 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2023-03-31 02:02:17,834 INFO L87 Difference]: Start difference. First operand 24806 states and 38621 transitions. Second operand has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:25,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:25,377 INFO L93 Difference]: Finished difference Result 86476 states and 134722 transitions. [2023-03-31 02:02:25,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-03-31 02:02:25,377 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 23.142857142857142) internal successors, (162), 6 states have internal predecessors, (162), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 180 [2023-03-31 02:02:25,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:25,525 INFO L225 Difference]: With dead ends: 86476 [2023-03-31 02:02:25,525 INFO L226 Difference]: Without dead ends: 70214 [2023-03-31 02:02:25,577 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2023-03-31 02:02:25,578 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1573 mSDsluCounter, 2101 mSDsCounter, 0 mSdLazyCounter, 898 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1573 SdHoareTripleChecker+Valid, 2914 SdHoareTripleChecker+Invalid, 908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 898 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:25,578 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1573 Valid, 2914 Invalid, 908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 898 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2023-03-31 02:02:25,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70214 states.