/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -tc ../../../trunk/examples/toolchains/AutomizerC.xml -i ../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-f954360 [2023-03-31 02:02:28,787 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-03-31 02:02:28,790 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-03-31 02:02:28,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... 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[2023-03-31 02:02:28,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-03-31 02:02:28,854 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-03-31 02:02:28,855 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-03-31 02:02:28,856 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-03-31 02:02:28,856 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-03-31 02:02:28,857 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-03-31 02:02:28,858 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-03-31 02:02:28,860 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-03-31 02:02:28,861 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-03-31 02:02:28,864 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-03-31 02:02:28,866 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-03-31 02:02:28,867 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-03-31 02:02:28,876 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-03-31 02:02:28,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-03-31 02:02:28,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-03-31 02:02:28,885 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-03-31 02:02:28,887 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2023-03-31 02:02:28,920 INFO L113 SettingsManager]: Loading preferences was successful [2023-03-31 02:02:28,920 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-03-31 02:02:28,921 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-03-31 02:02:28,921 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-03-31 02:02:28,922 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-03-31 02:02:28,922 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-03-31 02:02:28,923 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-03-31 02:02:28,923 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-03-31 02:02:28,923 INFO L138 SettingsManager]: * Use SBE=true [2023-03-31 02:02:28,923 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-03-31 02:02:28,924 INFO L138 SettingsManager]: * sizeof long=4 [2023-03-31 02:02:28,924 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-03-31 02:02:28,924 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-03-31 02:02:28,924 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-03-31 02:02:28,924 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * sizeof long double=12 [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * Use constant arrays=true [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-03-31 02:02:28,925 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-03-31 02:02:28,925 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:02:28,926 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-03-31 02:02:28,926 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-03-31 02:02:28,927 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-03-31 02:02:28,927 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-03-31 02:02:28,927 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-03-31 02:02:28,927 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-03-31 02:02:28,927 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-03-31 02:02:29,155 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-03-31 02:02:29,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-03-31 02:02:29,179 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-03-31 02:02:29,179 INFO L271 PluginConnector]: Initializing CDTParser... [2023-03-31 02:02:29,183 INFO L275 PluginConnector]: CDTParser initialized [2023-03-31 02:02:29,184 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-03-31 02:02:30,471 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-03-31 02:02:30,763 INFO L351 CDTParser]: Found 1 translation units. [2023-03-31 02:02:30,763 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-03-31 02:02:30,781 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64eb587fa/9302ba0ac83043cd86a374efed7f078a/FLAG374462c58 [2023-03-31 02:02:30,794 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/64eb587fa/9302ba0ac83043cd86a374efed7f078a [2023-03-31 02:02:30,797 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-03-31 02:02:30,798 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2023-03-31 02:02:30,799 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-03-31 02:02:30,799 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-03-31 02:02:30,802 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-03-31 02:02:30,803 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:02:30" (1/1) ... [2023-03-31 02:02:30,804 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@248920da and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:30, skipping insertion in model container [2023-03-31 02:02:30,804 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.03 02:02:30" (1/1) ... [2023-03-31 02:02:30,810 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-03-31 02:02:30,887 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-03-31 02:02:31,340 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2023-03-31 02:02:31,544 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:02:31,563 INFO L203 MainTranslator]: Completed pre-run [2023-03-31 02:02:31,841 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/seq-mthreaded-reduced/pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c[34568,34581] [2023-03-31 02:02:31,950 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-03-31 02:02:31,967 INFO L208 MainTranslator]: Completed translation [2023-03-31 02:02:31,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31 WrapperNode [2023-03-31 02:02:31,967 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-03-31 02:02:31,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-03-31 02:02:31,968 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-03-31 02:02:31,968 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-03-31 02:02:31,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:31,979 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,008 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,009 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,069 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,105 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,124 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,140 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,157 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-03-31 02:02:32,159 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-03-31 02:02:32,159 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-03-31 02:02:32,159 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-03-31 02:02:32,159 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (1/1) ... [2023-03-31 02:02:32,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-03-31 02:02:32,173 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-03-31 02:02:32,186 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-03-31 02:02:32,208 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-03-31 02:02:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2023-03-31 02:02:32,227 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-03-31 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2023-03-31 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2023-03-31 02:02:32,228 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_char [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure assert [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure read [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure write [2023-03-31 02:02:32,229 INFO L130 BoogieDeclarations]: Found specification of procedure node1 [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure node2 [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure node3 [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure node4 [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure init [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure check [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure main [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-03-31 02:02:32,230 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-03-31 02:02:32,231 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-03-31 02:02:32,465 INFO L236 CfgBuilder]: Building ICFG [2023-03-31 02:02:32,467 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-03-31 02:02:34,174 INFO L277 CfgBuilder]: Performing block encoding [2023-03-31 02:02:34,191 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-03-31 02:02:34,191 INFO L302 CfgBuilder]: Removed 0 assume(true) statements. [2023-03-31 02:02:34,199 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:02:34 BoogieIcfgContainer [2023-03-31 02:02:34,199 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-03-31 02:02:34,203 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-03-31 02:02:34,203 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-03-31 02:02:34,206 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-03-31 02:02:34,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.03 02:02:30" (1/3) ... [2023-03-31 02:02:34,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee2db2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:02:34, skipping insertion in model container [2023-03-31 02:02:34,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.03 02:02:31" (2/3) ... [2023-03-31 02:02:34,207 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ee2db2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.03 02:02:34, skipping insertion in model container [2023-03-31 02:02:34,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.03 02:02:34" (3/3) ... [2023-03-31 02:02:34,208 INFO L112 eAbstractionObserver]: Analyzing ICFG pals_opt-floodmax.4.4.ufo.BOUNDED-8.pals.c.v+nlh-reducer.c [2023-03-31 02:02:34,224 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-03-31 02:02:34,224 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-03-31 02:02:34,301 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-03-31 02:02:34,308 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;@64710bfe, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-03-31 02:02:34,309 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-03-31 02:02:34,317 INFO L276 IsEmpty]: Start isEmpty. Operand has 785 states, 770 states have (on average 1.7857142857142858) internal successors, (1375), 780 states have internal predecessors, (1375), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2023-03-31 02:02:34,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:34,343 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:34,344 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:34,344 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:34,349 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:34,349 INFO L85 PathProgramCache]: Analyzing trace with hash -1248124514, now seen corresponding path program 1 times [2023-03-31 02:02:34,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:34,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860154552] [2023-03-31 02:02:34,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:34,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:35,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:35,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:35,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:35,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:35,809 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860154552] [2023-03-31 02:02:35,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860154552] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:35,810 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:35,810 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:35,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201258468] [2023-03-31 02:02:35,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:35,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:35,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:35,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:35,858 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:35,862 INFO L87 Difference]: Start difference. First operand has 785 states, 770 states have (on average 1.7857142857142858) internal successors, (1375), 780 states have internal predecessors, (1375), 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 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:39,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:39,955 INFO L93 Difference]: Finished difference Result 1479 states and 2559 transitions. [2023-03-31 02:02:39,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:39,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:39,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:39,975 INFO L225 Difference]: With dead ends: 1479 [2023-03-31 02:02:39,975 INFO L226 Difference]: Without dead ends: 1242 [2023-03-31 02:02:39,980 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:39,983 INFO L413 NwaCegarLoop]: 1326 mSDtfsCounter, 835 mSDsluCounter, 1109 mSDsCounter, 0 mSdLazyCounter, 1483 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 835 SdHoareTripleChecker+Valid, 2435 SdHoareTripleChecker+Invalid, 1488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1483 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:39,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [835 Valid, 2435 Invalid, 1488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1483 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-03-31 02:02:40,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1242 states. [2023-03-31 02:02:40,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1242 to 1240. [2023-03-31 02:02:40,105 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1240 states, 1236 states have (on average 1.5485436893203883) internal successors, (1914), 1236 states have internal predecessors, (1914), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:40,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1240 states to 1240 states and 1917 transitions. [2023-03-31 02:02:40,111 INFO L78 Accepts]: Start accepts. Automaton has 1240 states and 1917 transitions. Word has length 320 [2023-03-31 02:02:40,112 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:40,112 INFO L495 AbstractCegarLoop]: Abstraction has 1240 states and 1917 transitions. [2023-03-31 02:02:40,113 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:40,113 INFO L276 IsEmpty]: Start isEmpty. Operand 1240 states and 1917 transitions. [2023-03-31 02:02:40,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:40,117 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:40,118 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:40,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-03-31 02:02:40,118 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:40,119 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:40,119 INFO L85 PathProgramCache]: Analyzing trace with hash 1048903652, now seen corresponding path program 1 times [2023-03-31 02:02:40,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:40,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858186305] [2023-03-31 02:02:40,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:40,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:40,920 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:40,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:40,950 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:40,951 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858186305] [2023-03-31 02:02:40,951 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858186305] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:40,951 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:40,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:40,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1809832601] [2023-03-31 02:02:40,952 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:40,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:40,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:40,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:40,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:40,956 INFO L87 Difference]: Start difference. First operand 1240 states and 1917 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:44,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:44,179 INFO L93 Difference]: Finished difference Result 2524 states and 3916 transitions. [2023-03-31 02:02:44,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:44,179 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:44,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:44,189 INFO L225 Difference]: With dead ends: 2524 [2023-03-31 02:02:44,190 INFO L226 Difference]: Without dead ends: 2164 [2023-03-31 02:02:44,201 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:44,202 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 670 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2077 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:44,202 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2077 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 02:02:44,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2164 states. [2023-03-31 02:02:44,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2164 to 2162. [2023-03-31 02:02:44,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2162 states, 2158 states have (on average 1.5421686746987953) internal successors, (3328), 2158 states have internal predecessors, (3328), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:44,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2162 states to 2162 states and 3331 transitions. [2023-03-31 02:02:44,276 INFO L78 Accepts]: Start accepts. Automaton has 2162 states and 3331 transitions. Word has length 320 [2023-03-31 02:02:44,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:44,277 INFO L495 AbstractCegarLoop]: Abstraction has 2162 states and 3331 transitions. [2023-03-31 02:02:44,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:44,278 INFO L276 IsEmpty]: Start isEmpty. Operand 2162 states and 3331 transitions. [2023-03-31 02:02:44,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:44,284 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:44,285 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:44,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-03-31 02:02:44,285 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:44,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:44,286 INFO L85 PathProgramCache]: Analyzing trace with hash 234543515, now seen corresponding path program 1 times [2023-03-31 02:02:44,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:44,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [732356991] [2023-03-31 02:02:44,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:44,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:44,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:44,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:44,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:44,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:44,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:44,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [732356991] [2023-03-31 02:02:44,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [732356991] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:44,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:44,973 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:44,974 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443570535] [2023-03-31 02:02:44,974 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:44,974 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:44,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:44,975 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:44,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:44,976 INFO L87 Difference]: Start difference. First operand 2162 states and 3331 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:48,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:48,225 INFO L93 Difference]: Finished difference Result 4646 states and 7189 transitions. [2023-03-31 02:02:48,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:48,225 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:48,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:48,241 INFO L225 Difference]: With dead ends: 4646 [2023-03-31 02:02:48,241 INFO L226 Difference]: Without dead ends: 3972 [2023-03-31 02:02:48,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:48,245 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 662 mSDsluCounter, 933 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2063 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:48,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2063 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2023-03-31 02:02:48,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3972 states. [2023-03-31 02:02:48,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3972 to 3970. [2023-03-31 02:02:48,359 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3970 states, 3966 states have (on average 1.5360564800806857) internal successors, (6092), 3966 states have internal predecessors, (6092), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:48,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3970 states to 3970 states and 6095 transitions. [2023-03-31 02:02:48,375 INFO L78 Accepts]: Start accepts. Automaton has 3970 states and 6095 transitions. Word has length 320 [2023-03-31 02:02:48,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:48,375 INFO L495 AbstractCegarLoop]: Abstraction has 3970 states and 6095 transitions. [2023-03-31 02:02:48,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:48,376 INFO L276 IsEmpty]: Start isEmpty. Operand 3970 states and 6095 transitions. [2023-03-31 02:02:48,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:48,384 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:48,384 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:48,384 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-03-31 02:02:48,385 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:48,385 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:48,385 INFO L85 PathProgramCache]: Analyzing trace with hash -2046512957, now seen corresponding path program 1 times [2023-03-31 02:02:48,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:48,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [278711246] [2023-03-31 02:02:48,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:48,386 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:48,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:49,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:49,044 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:49,045 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:49,045 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [278711246] [2023-03-31 02:02:49,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [278711246] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:49,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:49,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:49,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [371534126] [2023-03-31 02:02:49,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:49,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:49,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:49,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:49,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:49,047 INFO L87 Difference]: Start difference. First operand 3970 states and 6095 transitions. Second operand has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:51,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:51,971 INFO L93 Difference]: Finished difference Result 8774 states and 13533 transitions. [2023-03-31 02:02:51,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:51,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:51,975 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:52,007 INFO L225 Difference]: With dead ends: 8774 [2023-03-31 02:02:52,007 INFO L226 Difference]: Without dead ends: 7516 [2023-03-31 02:02:52,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:52,019 INFO L413 NwaCegarLoop]: 1130 mSDtfsCounter, 654 mSDsluCounter, 919 mSDsCounter, 0 mSdLazyCounter, 1312 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 2049 SdHoareTripleChecker+Invalid, 1317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 1312 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:52,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 2049 Invalid, 1317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 1312 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2023-03-31 02:02:52,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7516 states. [2023-03-31 02:02:52,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7516 to 7514. [2023-03-31 02:02:52,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7514 states, 7510 states have (on average 1.5302263648468708) internal successors, (11492), 7510 states have internal predecessors, (11492), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:52,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7514 states to 7514 states and 11495 transitions. [2023-03-31 02:02:52,322 INFO L78 Accepts]: Start accepts. Automaton has 7514 states and 11495 transitions. Word has length 320 [2023-03-31 02:02:52,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:52,323 INFO L495 AbstractCegarLoop]: Abstraction has 7514 states and 11495 transitions. [2023-03-31 02:02:52,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.25) internal successors, (317), 3 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:52,323 INFO L276 IsEmpty]: Start isEmpty. Operand 7514 states and 11495 transitions. [2023-03-31 02:02:52,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 321 [2023-03-31 02:02:52,339 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:52,339 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:52,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-03-31 02:02:52,340 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:52,340 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:52,340 INFO L85 PathProgramCache]: Analyzing trace with hash 928876380, now seen corresponding path program 1 times [2023-03-31 02:02:52,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:52,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [34382401] [2023-03-31 02:02:52,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:52,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:52,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:53,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:53,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:53,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:53,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:53,578 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [34382401] [2023-03-31 02:02:53,578 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [34382401] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:53,578 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:53,578 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-03-31 02:02:53,578 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523877803] [2023-03-31 02:02:53,578 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:53,579 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-03-31 02:02:53,579 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:53,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-03-31 02:02:53,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-03-31 02:02:53,580 INFO L87 Difference]: Start difference. First operand 7514 states and 11495 transitions. Second operand has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:58,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:02:58,377 INFO L93 Difference]: Finished difference Result 22295 states and 34070 transitions. [2023-03-31 02:02:58,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-03-31 02:02:58,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 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 320 [2023-03-31 02:02:58,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:02:58,430 INFO L225 Difference]: With dead ends: 22295 [2023-03-31 02:02:58,430 INFO L226 Difference]: Without dead ends: 14796 [2023-03-31 02:02:58,449 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-03-31 02:02:58,450 INFO L413 NwaCegarLoop]: 1843 mSDtfsCounter, 2696 mSDsluCounter, 1134 mSDsCounter, 0 mSdLazyCounter, 1926 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2696 SdHoareTripleChecker+Valid, 2977 SdHoareTripleChecker+Invalid, 1952 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 1926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:02:58,450 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2696 Valid, 2977 Invalid, 1952 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 1926 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-03-31 02:02:58,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14796 states. [2023-03-31 02:02:59,124 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14796 to 14794. [2023-03-31 02:02:59,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14794 states, 14790 states have (on average 1.5216362407031778) internal successors, (22505), 14790 states have internal predecessors, (22505), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:59,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14794 states to 14794 states and 22508 transitions. [2023-03-31 02:02:59,215 INFO L78 Accepts]: Start accepts. Automaton has 14794 states and 22508 transitions. Word has length 320 [2023-03-31 02:02:59,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:02:59,216 INFO L495 AbstractCegarLoop]: Abstraction has 14794 states and 22508 transitions. [2023-03-31 02:02:59,217 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 63.4) internal successors, (317), 4 states have internal predecessors, (317), 1 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-03-31 02:02:59,217 INFO L276 IsEmpty]: Start isEmpty. Operand 14794 states and 22508 transitions. [2023-03-31 02:02:59,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-03-31 02:02:59,251 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:02:59,251 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-03-31 02:02:59,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-03-31 02:02:59,252 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:02:59,252 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:02:59,252 INFO L85 PathProgramCache]: Analyzing trace with hash -436962112, now seen corresponding path program 1 times [2023-03-31 02:02:59,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:02:59,253 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [404484644] [2023-03-31 02:02:59,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:02:59,253 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:02:59,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:59,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:02:59,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:02:59,846 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-03-31 02:02:59,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:02:59,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [404484644] [2023-03-31 02:02:59,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [404484644] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:02:59,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:02:59,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:02:59,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170200962] [2023-03-31 02:02:59,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:02:59,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:02:59,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:02:59,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:02:59,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:02:59,849 INFO L87 Difference]: Start difference. First operand 14794 states and 22508 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 02:03:05,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:05,236 INFO L93 Difference]: Finished difference Result 44337 states and 67453 transitions. [2023-03-31 02:03:05,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:05,237 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-03-31 02:03:05,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:05,320 INFO L225 Difference]: With dead ends: 44337 [2023-03-31 02:03:05,320 INFO L226 Difference]: Without dead ends: 29568 [2023-03-31 02:03:05,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:05,351 INFO L413 NwaCegarLoop]: 2356 mSDtfsCounter, 1174 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2365 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1174 SdHoareTripleChecker+Valid, 3536 SdHoareTripleChecker+Invalid, 2369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2365 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:05,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1174 Valid, 3536 Invalid, 2369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2365 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2023-03-31 02:03:05,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29568 states. [2023-03-31 02:03:06,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29568 to 14807. [2023-03-31 02:03:06,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14807 states, 14803 states have (on average 1.5215834628115923) internal successors, (22524), 14803 states have internal predecessors, (22524), 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 02:03:06,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14807 states to 14807 states and 22527 transitions. [2023-03-31 02:03:06,352 INFO L78 Accepts]: Start accepts. Automaton has 14807 states and 22527 transitions. Word has length 322 [2023-03-31 02:03:06,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:06,352 INFO L495 AbstractCegarLoop]: Abstraction has 14807 states and 22527 transitions. [2023-03-31 02:03:06,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 02:03:06,352 INFO L276 IsEmpty]: Start isEmpty. Operand 14807 states and 22527 transitions. [2023-03-31 02:03:06,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 323 [2023-03-31 02:03:06,374 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:06,375 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:06,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-03-31 02:03:06,375 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:06,375 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:06,375 INFO L85 PathProgramCache]: Analyzing trace with hash 63547067, now seen corresponding path program 1 times [2023-03-31 02:03:06,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:06,376 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800283369] [2023-03-31 02:03:06,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:06,376 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:06,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:06,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:06,916 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 02:03:06,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:06,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800283369] [2023-03-31 02:03:06,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800283369] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:06,917 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:06,917 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:06,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [738896766] [2023-03-31 02:03:06,917 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:06,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:06,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:06,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:06,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:06,919 INFO L87 Difference]: Start difference. First operand 14807 states and 22527 transitions. Second operand has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 02:03:12,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:12,398 INFO L93 Difference]: Finished difference Result 43662 states and 66308 transitions. [2023-03-31 02:03:12,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:12,399 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 322 [2023-03-31 02:03:12,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:12,474 INFO L225 Difference]: With dead ends: 43662 [2023-03-31 02:03:12,474 INFO L226 Difference]: Without dead ends: 28997 [2023-03-31 02:03:12,506 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:12,507 INFO L413 NwaCegarLoop]: 2301 mSDtfsCounter, 1046 mSDsluCounter, 1130 mSDsCounter, 0 mSdLazyCounter, 2337 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1046 SdHoareTripleChecker+Valid, 3431 SdHoareTripleChecker+Invalid, 2359 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 2337 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:12,507 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1046 Valid, 3431 Invalid, 2359 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 2337 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2023-03-31 02:03:12,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28997 states. [2023-03-31 02:03:14,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28997 to 28995. [2023-03-31 02:03:14,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28995 states, 28991 states have (on average 1.5114345831464937) internal successors, (43818), 28991 states have internal predecessors, (43818), 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 02:03:14,310 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28995 states to 28995 states and 43821 transitions. [2023-03-31 02:03:14,310 INFO L78 Accepts]: Start accepts. Automaton has 28995 states and 43821 transitions. Word has length 322 [2023-03-31 02:03:14,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-03-31 02:03:14,311 INFO L495 AbstractCegarLoop]: Abstraction has 28995 states and 43821 transitions. [2023-03-31 02:03:14,311 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 79.75) internal successors, (319), 3 states have internal predecessors, (319), 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 02:03:14,311 INFO L276 IsEmpty]: Start isEmpty. Operand 28995 states and 43821 transitions. [2023-03-31 02:03:14,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 324 [2023-03-31 02:03:14,353 INFO L187 NwaCegarLoop]: Found error trace [2023-03-31 02:03:14,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 02:03:14,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-03-31 02:03:14,354 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ASSERT_VIOLATIONERROR_FUNCTION === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-03-31 02:03:14,354 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-03-31 02:03:14,354 INFO L85 PathProgramCache]: Analyzing trace with hash 331448602, now seen corresponding path program 1 times [2023-03-31 02:03:14,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-03-31 02:03:14,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23605910] [2023-03-31 02:03:14,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-03-31 02:03:14,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-03-31 02:03:14,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:14,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2023-03-31 02:03:14,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-03-31 02:03:14,881 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 02:03:14,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-03-31 02:03:14,881 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23605910] [2023-03-31 02:03:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23605910] provided 1 perfect and 0 imperfect interpolant sequences [2023-03-31 02:03:14,881 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-03-31 02:03:14,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-03-31 02:03:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015766820] [2023-03-31 02:03:14,882 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-03-31 02:03:14,882 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-03-31 02:03:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-03-31 02:03:14,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-03-31 02:03:14,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:14,884 INFO L87 Difference]: Start difference. First operand 28995 states and 43821 transitions. Second operand has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 02:03:21,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-03-31 02:03:21,957 INFO L93 Difference]: Finished difference Result 86872 states and 131276 transitions. [2023-03-31 02:03:21,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-03-31 02:03:21,958 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 80.0) internal successors, (320), 3 states have internal predecessors, (320), 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 323 [2023-03-31 02:03:21,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-03-31 02:03:22,086 INFO L225 Difference]: With dead ends: 86872 [2023-03-31 02:03:22,086 INFO L226 Difference]: Without dead ends: 57937 [2023-03-31 02:03:22,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-03-31 02:03:22,138 INFO L413 NwaCegarLoop]: 2355 mSDtfsCounter, 1169 mSDsluCounter, 1180 mSDsCounter, 0 mSdLazyCounter, 2364 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1169 SdHoareTripleChecker+Valid, 3535 SdHoareTripleChecker+Invalid, 2368 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 2364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-03-31 02:03:22,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1169 Valid, 3535 Invalid, 2368 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 2364 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-03-31 02:03:22,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57937 states.