/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.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 01:59:26,880 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 01:59:26,882 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 01:59:26,932 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 01:59:26,953 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 01:59:26,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 01:59:26,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 01:59:26,960 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 01:59:26,961 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 01:59:26,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 01:59:26,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 01:59:26,964 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 01:59:26,965 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 01:59:26,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 01:59:26,968 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 01:59:26,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 01:59:26,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 01:59:26,977 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 01:59:26,978 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 01:59:26,978 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 01:59:26,982 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 01:59:27,009 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 01:59:27,010 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 01:59:27,010 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 01:59:27,011 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 01:59:27,012 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 01:59:27,012 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 01:59:27,012 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 01:59:27,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 01:59:27,013 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 01:59:27,013 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 01:59:27,014 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 01:59:27,015 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 01:59:27,015 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 01:59:27,016 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 01:59:27,016 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:59:27,016 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 01:59:27,016 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 01:59:27,017 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 01:59:27,018 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 01:59:27,018 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 01:59:27,018 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 01:59:27,247 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 01:59:27,267 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 01:59:27,269 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 01:59:27,270 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 01:59:27,271 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 01:59:27,272 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:59:28,380 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 01:59:28,594 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 01:59:28,595 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:59:28,604 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161bb7c6a/ce743f1b717a4a17a442303224cff04c/FLAG1ddaaf7d5 [2023-03-31 01:59:28,616 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/161bb7c6a/ce743f1b717a4a17a442303224cff04c [2023-03-31 01:59:28,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 01:59:28,619 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 01:59:28,620 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 01:59:28,620 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 01:59:28,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 01:59:28,623 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:59:28" (1/1) ... [2023-03-31 01:59:28,624 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49d392c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:28, skipping insertion in model container [2023-03-31 01:59:28,624 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 01:59:28" (1/1) ... [2023-03-31 01:59:28,630 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 01:59:28,698 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 01:59:28,977 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.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[10710,10723] [2023-03-31 01:59:29,070 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:59:29,083 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 01:59:29,146 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.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c[10710,10723] [2023-03-31 01:59:29,192 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 01:59:29,207 INFO L208 MainTranslator]: Completed translation [2023-03-31 01:59:29,207 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29 WrapperNode [2023-03-31 01:59:29,207 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 01:59:29,208 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 01:59:29,208 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 01:59:29,208 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 01:59:29,219 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,219 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,231 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,232 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,252 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,262 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,266 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,269 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,274 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 01:59:29,275 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 01:59:29,275 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 01:59:29,275 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 01:59:29,285 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (1/1) ... [2023-03-31 01:59:29,291 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 01:59:29,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 01:59:29,318 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 01:59:29,343 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 01:59:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 01:59:29,360 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 01:59:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 01:59:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 01:59:29,362 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 01:59:29,363 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 01:59:29,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 01:59:29,557 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 01:59:29,561 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 01:59:30,323 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 01:59:30,331 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 01:59:30,331 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 01:59:30,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:59:30 BoogieIcfgContainer [2023-03-31 01:59:30,334 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 01:59:30,335 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 01:59:30,336 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 01:59:30,338 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 01:59:30,338 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 01:59:28" (1/3) ... [2023-03-31 01:59:30,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c472a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:59:30, skipping insertion in model container [2023-03-31 01:59:30,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 01:59:29" (2/3) ... [2023-03-31 01:59:30,339 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@46c472a7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 01:59:30, skipping insertion in model container [2023-03-31 01:59:30,339 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 01:59:30" (3/3) ... [2023-03-31 01:59:30,340 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.3.2.ufo.BOUNDED-6.pals.c.v+nlh-reducer.c [2023-03-31 01:59:30,355 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 01:59:30,355 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 01:59:30,412 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 01:59:30,420 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;@4a417de5, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 01:59:30,420 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 01:59:30,427 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 240 states have (on average 1.7625) internal successors, (423), 247 states have internal predecessors, (423), 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 01:59:30,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:59:30,444 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:30,445 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] [2023-03-31 01:59:30,446 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:30,449 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:30,450 INFO L85 PathProgramCache]: Analyzing trace with hash 2116595400, now seen corresponding path program 1 times [2023-03-31 01:59:30,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:30,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467504740] [2023-03-31 01:59:30,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:30,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:30,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:31,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:31,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:31,238 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 01:59:31,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:31,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467504740] [2023-03-31 01:59:31,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467504740] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:31,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:31,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:31,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904804193] [2023-03-31 01:59:31,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:31,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:31,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:31,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:31,271 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:31,275 INFO L87 Difference]: Start difference. First operand has 252 states, 240 states have (on average 1.7625) internal successors, (423), 247 states have internal predecessors, (423), 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 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 01:59:32,481 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:32,482 INFO L93 Difference]: Finished difference Result 507 states and 838 transitions. [2023-03-31 01:59:32,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:32,485 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 104 [2023-03-31 01:59:32,485 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:32,504 INFO L225 Difference]: With dead ends: 507 [2023-03-31 01:59:32,504 INFO L226 Difference]: Without dead ends: 360 [2023-03-31 01:59:32,508 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:59:32,513 INFO L413 NwaCegarLoop]: 405 mSDtfsCounter, 295 mSDsluCounter, 264 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 295 SdHoareTripleChecker+Valid, 669 SdHoareTripleChecker+Invalid, 475 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:32,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [295 Valid, 669 Invalid, 475 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:59:32,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 360 states. [2023-03-31 01:59:32,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 360 to 358. [2023-03-31 01:59:32,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 358 states, 354 states have (on average 1.4915254237288136) internal successors, (528), 354 states have internal predecessors, (528), 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 01:59:32,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 358 states to 358 states and 531 transitions. [2023-03-31 01:59:32,573 INFO L78 Accepts]: Start accepts. Automaton has 358 states and 531 transitions. Word has length 104 [2023-03-31 01:59:32,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:32,573 INFO L495 AbstractCegarLoop]: Abstraction has 358 states and 531 transitions. [2023-03-31 01:59:32,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.25) internal successors, (101), 3 states have internal predecessors, (101), 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 01:59:32,574 INFO L276 IsEmpty]: Start isEmpty. Operand 358 states and 531 transitions. [2023-03-31 01:59:32,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2023-03-31 01:59:32,575 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:32,576 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] [2023-03-31 01:59:32,576 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 01:59:32,576 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:32,577 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:32,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1568780068, now seen corresponding path program 1 times [2023-03-31 01:59:32,577 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:32,577 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049739971] [2023-03-31 01:59:32,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:32,577 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:32,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:33,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:33,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:33,171 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 01:59:33,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:33,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049739971] [2023-03-31 01:59:33,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049739971] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:33,173 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:33,173 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:59:33,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809502856] [2023-03-31 01:59:33,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:33,174 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:59:33,174 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:33,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:59:33,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:59:33,176 INFO L87 Difference]: Start difference. First operand 358 states and 531 transitions. Second operand has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 01:59:34,328 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:34,328 INFO L93 Difference]: Finished difference Result 1032 states and 1528 transitions. [2023-03-31 01:59:34,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:34,329 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 104 [2023-03-31 01:59:34,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:34,333 INFO L225 Difference]: With dead ends: 1032 [2023-03-31 01:59:34,333 INFO L226 Difference]: Without dead ends: 687 [2023-03-31 01:59:34,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:34,336 INFO L413 NwaCegarLoop]: 574 mSDtfsCounter, 695 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 618 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 892 SdHoareTripleChecker+Invalid, 630 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:34,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 892 Invalid, 630 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 618 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:59:34,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2023-03-31 01:59:34,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 685. [2023-03-31 01:59:34,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 685 states, 681 states have (on average 1.4728340675477238) internal successors, (1003), 681 states have internal predecessors, (1003), 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 01:59:34,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 685 states to 685 states and 1006 transitions. [2023-03-31 01:59:34,399 INFO L78 Accepts]: Start accepts. Automaton has 685 states and 1006 transitions. Word has length 104 [2023-03-31 01:59:34,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:34,401 INFO L495 AbstractCegarLoop]: Abstraction has 685 states and 1006 transitions. [2023-03-31 01:59:34,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.2) internal successors, (101), 4 states have internal predecessors, (101), 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 01:59:34,401 INFO L276 IsEmpty]: Start isEmpty. Operand 685 states and 1006 transitions. [2023-03-31 01:59:34,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2023-03-31 01:59:34,409 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:34,409 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] [2023-03-31 01:59:34,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 01:59:34,410 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:34,410 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1400264334, now seen corresponding path program 1 times [2023-03-31 01:59:34,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:34,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [468168742] [2023-03-31 01:59:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:34,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:34,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:34,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:34,697 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 01:59:34,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:34,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [468168742] [2023-03-31 01:59:34,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [468168742] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:34,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:34,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:34,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199766892] [2023-03-31 01:59:34,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:34,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:34,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:34,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:34,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:34,700 INFO L87 Difference]: Start difference. First operand 685 states and 1006 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 01:59:35,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:35,644 INFO L93 Difference]: Finished difference Result 2009 states and 2948 transitions. [2023-03-31 01:59:35,644 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:35,645 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 105 [2023-03-31 01:59:35,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:35,650 INFO L225 Difference]: With dead ends: 2009 [2023-03-31 01:59:35,651 INFO L226 Difference]: Without dead ends: 1356 [2023-03-31 01:59:35,652 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:35,653 INFO L413 NwaCegarLoop]: 507 mSDtfsCounter, 335 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 335 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:35,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [335 Valid, 849 Invalid, 515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:59:35,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1356 states. [2023-03-31 01:59:35,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1356 to 687. [2023-03-31 01:59:35,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 687 states, 683 states have (on average 1.471449487554905) internal successors, (1005), 683 states have internal predecessors, (1005), 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 01:59:35,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 687 states to 687 states and 1008 transitions. [2023-03-31 01:59:35,718 INFO L78 Accepts]: Start accepts. Automaton has 687 states and 1008 transitions. Word has length 105 [2023-03-31 01:59:35,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:35,718 INFO L495 AbstractCegarLoop]: Abstraction has 687 states and 1008 transitions. [2023-03-31 01:59:35,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 3 states have internal predecessors, (102), 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 01:59:35,719 INFO L276 IsEmpty]: Start isEmpty. Operand 687 states and 1008 transitions. [2023-03-31 01:59:35,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-03-31 01:59:35,720 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:35,720 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] [2023-03-31 01:59:35,720 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 01:59:35,721 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:35,721 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:35,721 INFO L85 PathProgramCache]: Analyzing trace with hash 1463288869, now seen corresponding path program 1 times [2023-03-31 01:59:35,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:35,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1009440580] [2023-03-31 01:59:35,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:35,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:35,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:36,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:36,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:36,206 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 01:59:36,206 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:36,206 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1009440580] [2023-03-31 01:59:36,206 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1009440580] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:36,206 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:36,207 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:59:36,207 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2031143494] [2023-03-31 01:59:36,207 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:36,207 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:59:36,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:36,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:59:36,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:59:36,209 INFO L87 Difference]: Start difference. First operand 687 states and 1008 transitions. Second operand has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 01:59:37,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:37,322 INFO L93 Difference]: Finished difference Result 1959 states and 2860 transitions. [2023-03-31 01:59:37,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:37,323 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 106 [2023-03-31 01:59:37,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:37,328 INFO L225 Difference]: With dead ends: 1959 [2023-03-31 01:59:37,329 INFO L226 Difference]: Without dead ends: 1306 [2023-03-31 01:59:37,330 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:37,331 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 685 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 593 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 867 SdHoareTripleChecker+Invalid, 605 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 593 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:37,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [685 Valid, 867 Invalid, 605 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 593 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:59:37,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1306 states. [2023-03-31 01:59:37,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1306 to 1304. [2023-03-31 01:59:37,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1304 states, 1300 states have (on average 1.45) internal successors, (1885), 1300 states have internal predecessors, (1885), 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 01:59:37,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1304 states to 1304 states and 1888 transitions. [2023-03-31 01:59:37,456 INFO L78 Accepts]: Start accepts. Automaton has 1304 states and 1888 transitions. Word has length 106 [2023-03-31 01:59:37,456 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:37,456 INFO L495 AbstractCegarLoop]: Abstraction has 1304 states and 1888 transitions. [2023-03-31 01:59:37,457 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 20.6) internal successors, (103), 4 states have internal predecessors, (103), 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 01:59:37,457 INFO L276 IsEmpty]: Start isEmpty. Operand 1304 states and 1888 transitions. [2023-03-31 01:59:37,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-03-31 01:59:37,459 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:37,459 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] [2023-03-31 01:59:37,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 01:59:37,460 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:37,460 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:37,460 INFO L85 PathProgramCache]: Analyzing trace with hash 459537775, now seen corresponding path program 1 times [2023-03-31 01:59:37,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:37,460 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [713051973] [2023-03-31 01:59:37,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:37,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:37,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:37,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:37,734 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 01:59:37,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:37,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [713051973] [2023-03-31 01:59:37,734 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [713051973] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:37,734 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:37,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:37,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035857564] [2023-03-31 01:59:37,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:37,735 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:37,735 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:37,737 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:37,740 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:37,745 INFO L87 Difference]: Start difference. First operand 1304 states and 1888 transitions. Second operand has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 01:59:39,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:39,069 INFO L93 Difference]: Finished difference Result 3828 states and 5536 transitions. [2023-03-31 01:59:39,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:39,070 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 107 [2023-03-31 01:59:39,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:39,079 INFO L225 Difference]: With dead ends: 3828 [2023-03-31 01:59:39,079 INFO L226 Difference]: Without dead ends: 2572 [2023-03-31 01:59:39,082 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:39,084 INFO L413 NwaCegarLoop]: 666 mSDtfsCounter, 321 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 672 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 321 SdHoareTripleChecker+Valid, 1008 SdHoareTripleChecker+Invalid, 674 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 672 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:39,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [321 Valid, 1008 Invalid, 674 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 672 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:59:39,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2572 states. [2023-03-31 01:59:39,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2572 to 1308. [2023-03-31 01:59:39,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1308 states, 1304 states have (on average 1.4486196319018405) internal successors, (1889), 1304 states have internal predecessors, (1889), 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 01:59:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1308 states to 1308 states and 1892 transitions. [2023-03-31 01:59:39,228 INFO L78 Accepts]: Start accepts. Automaton has 1308 states and 1892 transitions. Word has length 107 [2023-03-31 01:59:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:39,229 INFO L495 AbstractCegarLoop]: Abstraction has 1308 states and 1892 transitions. [2023-03-31 01:59:39,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.0) internal successors, (104), 3 states have internal predecessors, (104), 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 01:59:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 1308 states and 1892 transitions. [2023-03-31 01:59:39,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:59:39,231 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:39,231 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] [2023-03-31 01:59:39,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 01:59:39,232 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:39,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:39,232 INFO L85 PathProgramCache]: Analyzing trace with hash -1492713623, now seen corresponding path program 1 times [2023-03-31 01:59:39,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:39,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51627850] [2023-03-31 01:59:39,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:39,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:39,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:39,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:39,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:39,519 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 01:59:39,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:39,520 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [51627850] [2023-03-31 01:59:39,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [51627850] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:39,520 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:39,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:39,520 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011363809] [2023-03-31 01:59:39,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:39,521 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:39,521 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:39,521 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:39,521 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:39,522 INFO L87 Difference]: Start difference. First operand 1308 states and 1892 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 01:59:40,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:40,857 INFO L93 Difference]: Finished difference Result 3275 states and 4753 transitions. [2023-03-31 01:59:40,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:40,858 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 108 [2023-03-31 01:59:40,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:40,866 INFO L225 Difference]: With dead ends: 3275 [2023-03-31 01:59:40,866 INFO L226 Difference]: Without dead ends: 2307 [2023-03-31 01:59:40,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:40,869 INFO L413 NwaCegarLoop]: 642 mSDtfsCounter, 265 mSDsluCounter, 320 mSDsCounter, 0 mSdLazyCounter, 657 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 265 SdHoareTripleChecker+Valid, 962 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:40,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [265 Valid, 962 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 657 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-03-31 01:59:40,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2307 states. [2023-03-31 01:59:41,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2307 to 2305. [2023-03-31 01:59:41,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2305 states, 2301 states have (on average 1.423728813559322) internal successors, (3276), 2301 states have internal predecessors, (3276), 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 01:59:41,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2305 states to 2305 states and 3279 transitions. [2023-03-31 01:59:41,096 INFO L78 Accepts]: Start accepts. Automaton has 2305 states and 3279 transitions. Word has length 108 [2023-03-31 01:59:41,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:41,098 INFO L495 AbstractCegarLoop]: Abstraction has 2305 states and 3279 transitions. [2023-03-31 01:59:41,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 3 states have internal predecessors, (105), 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 01:59:41,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2305 states and 3279 transitions. [2023-03-31 01:59:41,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:59:41,101 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:41,101 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] [2023-03-31 01:59:41,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 01:59:41,101 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:41,101 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:41,102 INFO L85 PathProgramCache]: Analyzing trace with hash 373791302, now seen corresponding path program 1 times [2023-03-31 01:59:41,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:41,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1501667405] [2023-03-31 01:59:41,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:41,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:41,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:41,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:41,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:41,531 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 01:59:41,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:41,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1501667405] [2023-03-31 01:59:41,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1501667405] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:41,532 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:41,532 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-03-31 01:59:41,532 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54205277] [2023-03-31 01:59:41,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:41,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 01:59:41,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:41,533 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 01:59:41,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:41,533 INFO L87 Difference]: Start difference. First operand 2305 states and 3279 transitions. Second operand has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 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 01:59:42,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:42,969 INFO L93 Difference]: Finished difference Result 6421 states and 9142 transitions. [2023-03-31 01:59:42,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:42,970 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 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 108 [2023-03-31 01:59:42,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:42,984 INFO L225 Difference]: With dead ends: 6421 [2023-03-31 01:59:42,984 INFO L226 Difference]: Without dead ends: 4157 [2023-03-31 01:59:42,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:42,990 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 622 mSDsluCounter, 630 mSDsCounter, 0 mSdLazyCounter, 602 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 622 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 602 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:42,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [622 Valid, 1175 Invalid, 614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 602 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2023-03-31 01:59:42,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4157 states. [2023-03-31 01:59:43,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4157 to 4155. [2023-03-31 01:59:43,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4155 states, 4151 states have (on average 1.412430739580824) internal successors, (5863), 4151 states have internal predecessors, (5863), 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 01:59:43,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4155 states to 4155 states and 5866 transitions. [2023-03-31 01:59:43,423 INFO L78 Accepts]: Start accepts. Automaton has 4155 states and 5866 transitions. Word has length 108 [2023-03-31 01:59:43,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:43,423 INFO L495 AbstractCegarLoop]: Abstraction has 4155 states and 5866 transitions. [2023-03-31 01:59:43,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 17.5) internal successors, (105), 5 states have internal predecessors, (105), 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 01:59:43,424 INFO L276 IsEmpty]: Start isEmpty. Operand 4155 states and 5866 transitions. [2023-03-31 01:59:43,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2023-03-31 01:59:43,428 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:43,428 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] [2023-03-31 01:59:43,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 01:59:43,429 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:43,429 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:43,429 INFO L85 PathProgramCache]: Analyzing trace with hash 132103590, now seen corresponding path program 1 times [2023-03-31 01:59:43,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:43,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1266280984] [2023-03-31 01:59:43,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:43,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:43,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:43,827 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:43,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:43,836 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 01:59:43,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:43,838 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1266280984] [2023-03-31 01:59:43,838 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1266280984] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:43,838 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:43,838 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:59:43,838 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1996238829] [2023-03-31 01:59:43,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:43,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:59:43,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:43,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:59:43,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:59:43,840 INFO L87 Difference]: Start difference. First operand 4155 states and 5866 transitions. Second operand has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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 01:59:45,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:45,147 INFO L93 Difference]: Finished difference Result 8574 states and 12016 transitions. [2023-03-31 01:59:45,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:45,148 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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 108 [2023-03-31 01:59:45,148 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:45,163 INFO L225 Difference]: With dead ends: 8574 [2023-03-31 01:59:45,163 INFO L226 Difference]: Without dead ends: 4540 [2023-03-31 01:59:45,170 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:45,171 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 707 mSDsluCounter, 318 mSDsCounter, 0 mSdLazyCounter, 546 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 707 SdHoareTripleChecker+Valid, 820 SdHoareTripleChecker+Invalid, 555 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 546 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:45,171 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [707 Valid, 820 Invalid, 555 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 546 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:59:45,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2023-03-31 01:59:45,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 4383. [2023-03-31 01:59:45,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4383 states, 4379 states have (on average 1.3973509933774835) internal successors, (6119), 4379 states have internal predecessors, (6119), 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 01:59:45,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4383 states to 4383 states and 6122 transitions. [2023-03-31 01:59:45,661 INFO L78 Accepts]: Start accepts. Automaton has 4383 states and 6122 transitions. Word has length 108 [2023-03-31 01:59:45,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:45,662 INFO L495 AbstractCegarLoop]: Abstraction has 4383 states and 6122 transitions. [2023-03-31 01:59:45,662 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.0) internal successors, (105), 4 states have internal predecessors, (105), 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 01:59:45,662 INFO L276 IsEmpty]: Start isEmpty. Operand 4383 states and 6122 transitions. [2023-03-31 01:59:45,666 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2023-03-31 01:59:45,666 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:45,666 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] [2023-03-31 01:59:45,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-03-31 01:59:45,667 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:45,667 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:45,667 INFO L85 PathProgramCache]: Analyzing trace with hash -1064091440, now seen corresponding path program 1 times [2023-03-31 01:59:45,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:45,667 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1871635140] [2023-03-31 01:59:45,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:45,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:45,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:45,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:45,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:45,894 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 01:59:45,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:45,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1871635140] [2023-03-31 01:59:45,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1871635140] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:45,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:45,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:45,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1651587539] [2023-03-31 01:59:45,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:45,895 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:45,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:45,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:45,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:45,896 INFO L87 Difference]: Start difference. First operand 4383 states and 6122 transitions. Second operand has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 01:59:47,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:47,477 INFO L93 Difference]: Finished difference Result 12407 states and 17416 transitions. [2023-03-31 01:59:47,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:47,478 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 109 [2023-03-31 01:59:47,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:47,505 INFO L225 Difference]: With dead ends: 12407 [2023-03-31 01:59:47,505 INFO L226 Difference]: Without dead ends: 8637 [2023-03-31 01:59:47,514 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:47,515 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 307 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 639 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 307 SdHoareTripleChecker+Valid, 975 SdHoareTripleChecker+Invalid, 641 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 639 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:47,515 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [307 Valid, 975 Invalid, 641 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 639 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:59:47,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8637 states. [2023-03-31 01:59:48,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8637 to 4399. [2023-03-31 01:59:48,035 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4399 states, 4395 states have (on average 1.3959044368600682) internal successors, (6135), 4395 states have internal predecessors, (6135), 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 01:59:48,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4399 states to 4399 states and 6138 transitions. [2023-03-31 01:59:48,043 INFO L78 Accepts]: Start accepts. Automaton has 4399 states and 6138 transitions. Word has length 109 [2023-03-31 01:59:48,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:48,044 INFO L495 AbstractCegarLoop]: Abstraction has 4399 states and 6138 transitions. [2023-03-31 01:59:48,044 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.5) internal successors, (106), 3 states have internal predecessors, (106), 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 01:59:48,044 INFO L276 IsEmpty]: Start isEmpty. Operand 4399 states and 6138 transitions. [2023-03-31 01:59:48,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-31 01:59:48,049 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:48,049 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] [2023-03-31 01:59:48,049 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-03-31 01:59:48,049 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:48,049 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:48,049 INFO L85 PathProgramCache]: Analyzing trace with hash -654185195, now seen corresponding path program 1 times [2023-03-31 01:59:48,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:48,050 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781529723] [2023-03-31 01:59:48,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:48,050 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:48,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:48,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:48,315 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 01:59:48,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:48,316 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781529723] [2023-03-31 01:59:48,316 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781529723] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:48,316 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:48,316 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:48,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576675401] [2023-03-31 01:59:48,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:48,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:48,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:48,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:48,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:48,318 INFO L87 Difference]: Start difference. First operand 4399 states and 6138 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 01:59:49,781 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:49,781 INFO L93 Difference]: Finished difference Result 9479 states and 13688 transitions. [2023-03-31 01:59:49,782 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:49,782 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 110 [2023-03-31 01:59:49,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:49,795 INFO L225 Difference]: With dead ends: 9479 [2023-03-31 01:59:49,795 INFO L226 Difference]: Without dead ends: 6265 [2023-03-31 01:59:49,802 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:49,802 INFO L413 NwaCegarLoop]: 465 mSDtfsCounter, 232 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 480 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 232 SdHoareTripleChecker+Valid, 679 SdHoareTripleChecker+Invalid, 486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 480 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:49,802 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [232 Valid, 679 Invalid, 486 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 480 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 01:59:49,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6265 states. [2023-03-31 01:59:50,671 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6265 to 6137. [2023-03-31 01:59:50,692 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6137 states, 6133 states have (on average 1.425892711560411) internal successors, (8745), 6133 states have internal predecessors, (8745), 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 01:59:50,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6137 states to 6137 states and 8748 transitions. [2023-03-31 01:59:50,705 INFO L78 Accepts]: Start accepts. Automaton has 6137 states and 8748 transitions. Word has length 110 [2023-03-31 01:59:50,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:50,705 INFO L495 AbstractCegarLoop]: Abstraction has 6137 states and 8748 transitions. [2023-03-31 01:59:50,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 01:59:50,706 INFO L276 IsEmpty]: Start isEmpty. Operand 6137 states and 8748 transitions. [2023-03-31 01:59:50,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-31 01:59:50,710 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:50,710 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] [2023-03-31 01:59:50,710 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-03-31 01:59:50,711 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:50,711 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:50,711 INFO L85 PathProgramCache]: Analyzing trace with hash -151512153, now seen corresponding path program 1 times [2023-03-31 01:59:50,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:50,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [716817985] [2023-03-31 01:59:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:50,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:50,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:51,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:51,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:51,131 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 01:59:51,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:51,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [716817985] [2023-03-31 01:59:51,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [716817985] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:51,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:51,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 01:59:51,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506557169] [2023-03-31 01:59:51,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:51,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 01:59:51,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:51,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 01:59:51,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 01:59:51,134 INFO L87 Difference]: Start difference. First operand 6137 states and 8748 transitions. Second operand has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 01:59:52,253 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:52,253 INFO L93 Difference]: Finished difference Result 12260 states and 17478 transitions. [2023-03-31 01:59:52,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 01:59:52,254 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 110 [2023-03-31 01:59:52,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:52,264 INFO L225 Difference]: With dead ends: 12260 [2023-03-31 01:59:52,264 INFO L226 Difference]: Without dead ends: 6135 [2023-03-31 01:59:52,274 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 01:59:52,274 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 65 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 399 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 1075 SdHoareTripleChecker+Invalid, 401 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:52,275 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 1075 Invalid, 401 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 399 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:59:52,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6135 states. [2023-03-31 01:59:52,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6135 to 6135. [2023-03-31 01:59:52,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6135 states, 6131 states have (on average 1.4257054314141249) internal successors, (8741), 6131 states have internal predecessors, (8741), 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 01:59:52,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6135 states to 6135 states and 8744 transitions. [2023-03-31 01:59:52,974 INFO L78 Accepts]: Start accepts. Automaton has 6135 states and 8744 transitions. Word has length 110 [2023-03-31 01:59:52,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:52,974 INFO L495 AbstractCegarLoop]: Abstraction has 6135 states and 8744 transitions. [2023-03-31 01:59:52,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 21.4) internal successors, (107), 4 states have internal predecessors, (107), 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 01:59:52,974 INFO L276 IsEmpty]: Start isEmpty. Operand 6135 states and 8744 transitions. [2023-03-31 01:59:52,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-31 01:59:52,979 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:52,979 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] [2023-03-31 01:59:52,979 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-03-31 01:59:52,979 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:52,980 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:52,980 INFO L85 PathProgramCache]: Analyzing trace with hash -2092276410, now seen corresponding path program 1 times [2023-03-31 01:59:52,980 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:52,980 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590261475] [2023-03-31 01:59:52,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:52,980 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:53,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:53,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:53,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:53,221 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 01:59:53,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:53,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590261475] [2023-03-31 01:59:53,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590261475] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:53,221 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:53,221 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:53,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [314613693] [2023-03-31 01:59:53,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:53,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:53,222 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:53,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:53,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:53,223 INFO L87 Difference]: Start difference. First operand 6135 states and 8744 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 01:59:55,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:55,076 INFO L93 Difference]: Finished difference Result 13673 states and 19634 transitions. [2023-03-31 01:59:55,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:55,077 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 110 [2023-03-31 01:59:55,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:55,094 INFO L225 Difference]: With dead ends: 13673 [2023-03-31 01:59:55,095 INFO L226 Difference]: Without dead ends: 8769 [2023-03-31 01:59:55,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:55,104 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 268 mSDsluCounter, 312 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 268 SdHoareTripleChecker+Valid, 959 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:55,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [268 Valid, 959 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2023-03-31 01:59:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8769 states. [2023-03-31 01:59:56,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8769 to 8767. [2023-03-31 01:59:56,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8767 states, 8763 states have (on average 1.398950131233596) internal successors, (12259), 8763 states have internal predecessors, (12259), 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 01:59:56,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8767 states to 8767 states and 12262 transitions. [2023-03-31 01:59:56,108 INFO L78 Accepts]: Start accepts. Automaton has 8767 states and 12262 transitions. Word has length 110 [2023-03-31 01:59:56,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 01:59:56,108 INFO L495 AbstractCegarLoop]: Abstraction has 8767 states and 12262 transitions. [2023-03-31 01:59:56,108 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 01:59:56,108 INFO L276 IsEmpty]: Start isEmpty. Operand 8767 states and 12262 transitions. [2023-03-31 01:59:56,114 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2023-03-31 01:59:56,114 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 01:59:56,115 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] [2023-03-31 01:59:56,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-03-31 01:59:56,115 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 01:59:56,115 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 01:59:56,116 INFO L85 PathProgramCache]: Analyzing trace with hash -2106268029, now seen corresponding path program 1 times [2023-03-31 01:59:56,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 01:59:56,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1259881215] [2023-03-31 01:59:56,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 01:59:56,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 01:59:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:56,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 01:59:56,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 01:59:56,355 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 01:59:56,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 01:59:56,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1259881215] [2023-03-31 01:59:56,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1259881215] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 01:59:56,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 01:59:56,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 01:59:56,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [92753194] [2023-03-31 01:59:56,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 01:59:56,356 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 01:59:56,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 01:59:56,357 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 01:59:56,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:56,357 INFO L87 Difference]: Start difference. First operand 8767 states and 12262 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 01:59:58,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 01:59:58,373 INFO L93 Difference]: Finished difference Result 20954 states and 30137 transitions. [2023-03-31 01:59:58,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 01:59:58,374 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 110 [2023-03-31 01:59:58,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 01:59:58,402 INFO L225 Difference]: With dead ends: 20954 [2023-03-31 01:59:58,403 INFO L226 Difference]: Without dead ends: 13413 [2023-03-31 01:59:58,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 01:59:58,419 INFO L413 NwaCegarLoop]: 461 mSDtfsCounter, 215 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 476 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 215 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 482 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 476 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 01:59:58,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [215 Valid, 696 Invalid, 482 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 476 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 01:59:58,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13413 states. [2023-03-31 02:00:00,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13413 to 13085. [2023-03-31 02:00:00,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13085 states, 13081 states have (on average 1.4242794893356776) internal successors, (18631), 13081 states have internal predecessors, (18631), 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 02:00:00,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13085 states to 13085 states and 18634 transitions. [2023-03-31 02:00:00,071 INFO L78 Accepts]: Start accepts. Automaton has 13085 states and 18634 transitions. Word has length 110 [2023-03-31 02:00:00,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:00,073 INFO L495 AbstractCegarLoop]: Abstraction has 13085 states and 18634 transitions. [2023-03-31 02:00:00,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 3 states have internal predecessors, (107), 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 02:00:00,074 INFO L276 IsEmpty]: Start isEmpty. Operand 13085 states and 18634 transitions. [2023-03-31 02:00:00,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-03-31 02:00:00,082 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:00,082 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] [2023-03-31 02:00:00,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-03-31 02:00:00,082 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:00,083 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:00,083 INFO L85 PathProgramCache]: Analyzing trace with hash -100209549, now seen corresponding path program 1 times [2023-03-31 02:00:00,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:00,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199950247] [2023-03-31 02:00:00,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:00,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:00,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:00,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:00,407 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 02:00:00,408 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:00,408 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199950247] [2023-03-31 02:00:00,408 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199950247] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:00,408 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:00,408 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:00,408 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1561250406] [2023-03-31 02:00:00,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:00,409 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-03-31 02:00:00,409 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:00,409 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-03-31 02:00:00,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:00,410 INFO L87 Difference]: Start difference. First operand 13085 states and 18634 transitions. Second operand has 6 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 02:00:02,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:02,614 INFO L93 Difference]: Finished difference Result 24992 states and 35930 transitions. [2023-03-31 02:00:02,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-03-31 02:00:02,615 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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) Word has length 113 [2023-03-31 02:00:02,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:02,639 INFO L225 Difference]: With dead ends: 24992 [2023-03-31 02:00:02,640 INFO L226 Difference]: Without dead ends: 13085 [2023-03-31 02:00:02,657 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2023-03-31 02:00:02,658 INFO L413 NwaCegarLoop]: 265 mSDtfsCounter, 850 mSDsluCounter, 100 mSDsCounter, 0 mSdLazyCounter, 416 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 850 SdHoareTripleChecker+Valid, 365 SdHoareTripleChecker+Invalid, 430 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 416 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:02,658 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [850 Valid, 365 Invalid, 430 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 416 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 02:00:02,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13085 states. [2023-03-31 02:00:04,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13085 to 13085. [2023-03-31 02:00:04,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13085 states, 13081 states have (on average 1.4114364345233545) internal successors, (18463), 13081 states have internal predecessors, (18463), 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 02:00:04,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13085 states to 13085 states and 18466 transitions. [2023-03-31 02:00:04,413 INFO L78 Accepts]: Start accepts. Automaton has 13085 states and 18466 transitions. Word has length 113 [2023-03-31 02:00:04,413 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:04,414 INFO L495 AbstractCegarLoop]: Abstraction has 13085 states and 18466 transitions. [2023-03-31 02:00:04,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 02:00:04,414 INFO L276 IsEmpty]: Start isEmpty. Operand 13085 states and 18466 transitions. [2023-03-31 02:00:04,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2023-03-31 02:00:04,421 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:04,422 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] [2023-03-31 02:00:04,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-03-31 02:00:04,422 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:04,422 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:04,422 INFO L85 PathProgramCache]: Analyzing trace with hash 1722513102, now seen corresponding path program 1 times [2023-03-31 02:00:04,422 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:04,422 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [383658668] [2023-03-31 02:00:04,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:04,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:04,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:04,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:04,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:04,787 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 02:00:04,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:04,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [383658668] [2023-03-31 02:00:04,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [383658668] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:04,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:04,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:04,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674091031] [2023-03-31 02:00:04,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:04,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:04,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:04,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:04,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:04,789 INFO L87 Difference]: Start difference. First operand 13085 states and 18466 transitions. Second operand has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 02:00:08,316 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:08,317 INFO L93 Difference]: Finished difference Result 33161 states and 47017 transitions. [2023-03-31 02:00:08,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:08,317 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 113 [2023-03-31 02:00:08,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:08,358 INFO L225 Difference]: With dead ends: 33161 [2023-03-31 02:00:08,358 INFO L226 Difference]: Without dead ends: 20434 [2023-03-31 02:00:08,389 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:08,390 INFO L413 NwaCegarLoop]: 506 mSDtfsCounter, 708 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 708 SdHoareTripleChecker+Valid, 813 SdHoareTripleChecker+Invalid, 561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:08,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [708 Valid, 813 Invalid, 561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2023-03-31 02:00:08,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20434 states. [2023-03-31 02:00:11,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20434 to 20432. [2023-03-31 02:00:11,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20432 states, 20428 states have (on average 1.402095163501077) internal successors, (28642), 20428 states have internal predecessors, (28642), 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 02:00:11,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20432 states to 20432 states and 28645 transitions. [2023-03-31 02:00:11,332 INFO L78 Accepts]: Start accepts. Automaton has 20432 states and 28645 transitions. Word has length 113 [2023-03-31 02:00:11,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:11,332 INFO L495 AbstractCegarLoop]: Abstraction has 20432 states and 28645 transitions. [2023-03-31 02:00:11,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.0) internal successors, (110), 4 states have internal predecessors, (110), 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 02:00:11,332 INFO L276 IsEmpty]: Start isEmpty. Operand 20432 states and 28645 transitions. [2023-03-31 02:00:11,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2023-03-31 02:00:11,343 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:11,343 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] [2023-03-31 02:00:11,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-03-31 02:00:11,344 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:11,344 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:11,344 INFO L85 PathProgramCache]: Analyzing trace with hash 1249295807, now seen corresponding path program 1 times [2023-03-31 02:00:11,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:11,344 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145248833] [2023-03-31 02:00:11,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:11,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:11,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:11,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:11,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:11,737 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 02:00:11,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:11,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145248833] [2023-03-31 02:00:11,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145248833] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:11,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:11,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:00:11,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776661449] [2023-03-31 02:00:11,738 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:11,738 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:00:11,738 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:11,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:00:11,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:00:11,739 INFO L87 Difference]: Start difference. First operand 20432 states and 28645 transitions. Second operand has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 02:00:14,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:14,430 INFO L93 Difference]: Finished difference Result 32055 states and 45048 transitions. [2023-03-31 02:00:14,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:00:14,431 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 115 [2023-03-31 02:00:14,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:14,459 INFO L225 Difference]: With dead ends: 32055 [2023-03-31 02:00:14,460 INFO L226 Difference]: Without dead ends: 16803 [2023-03-31 02:00:14,481 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:00:14,482 INFO L413 NwaCegarLoop]: 373 mSDtfsCounter, 53 mSDsluCounter, 668 mSDsCounter, 0 mSdLazyCounter, 384 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 1041 SdHoareTripleChecker+Invalid, 385 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:14,482 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 1041 Invalid, 385 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 384 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-03-31 02:00:14,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16803 states. [2023-03-31 02:00:16,827 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16803 to 16803. [2023-03-31 02:00:16,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16803 states, 16799 states have (on average 1.397583189475564) internal successors, (23478), 16799 states have internal predecessors, (23478), 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 02:00:16,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16803 states to 16803 states and 23481 transitions. [2023-03-31 02:00:16,869 INFO L78 Accepts]: Start accepts. Automaton has 16803 states and 23481 transitions. Word has length 115 [2023-03-31 02:00:16,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:00:16,870 INFO L495 AbstractCegarLoop]: Abstraction has 16803 states and 23481 transitions. [2023-03-31 02:00:16,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.4) internal successors, (112), 4 states have internal predecessors, (112), 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 02:00:16,870 INFO L276 IsEmpty]: Start isEmpty. Operand 16803 states and 23481 transitions. [2023-03-31 02:00:16,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2023-03-31 02:00:16,879 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:00:16,879 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] [2023-03-31 02:00:16,879 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-03-31 02:00:16,879 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:00:16,879 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:00:16,879 INFO L85 PathProgramCache]: Analyzing trace with hash 413070995, now seen corresponding path program 1 times [2023-03-31 02:00:16,880 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:00:16,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072823374] [2023-03-31 02:00:16,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:00:16,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:00:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:17,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:00:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:00:17,146 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 02:00:17,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:00:17,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072823374] [2023-03-31 02:00:17,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072823374] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:00:17,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:00:17,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:00:17,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208949045] [2023-03-31 02:00:17,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:00:17,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:00:17,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:00:17,148 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:00:17,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:17,148 INFO L87 Difference]: Start difference. First operand 16803 states and 23481 transitions. Second operand has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 02:00:21,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:00:21,435 INFO L93 Difference]: Finished difference Result 39160 states and 55543 transitions. [2023-03-31 02:00:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:00:21,436 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 28.5) internal successors, (114), 3 states have internal predecessors, (114), 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 117 [2023-03-31 02:00:21,436 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:00:21,473 INFO L225 Difference]: With dead ends: 39160 [2023-03-31 02:00:21,473 INFO L226 Difference]: Without dead ends: 26221 [2023-03-31 02:00:21,487 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:00:21,489 INFO L413 NwaCegarLoop]: 450 mSDtfsCounter, 213 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 465 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 667 SdHoareTripleChecker+Invalid, 471 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-03-31 02:00:21,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 667 Invalid, 471 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 465 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-03-31 02:00:21,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26221 states.