./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:59:01,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:59:01,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:59:01,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:59:01,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:59:01,921 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:59:01,926 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:59:01,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:59:01,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:59:01,936 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:59:01,937 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:59:01,939 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:59:01,939 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:59:01,941 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:59:01,943 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:59:01,944 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:59:01,945 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:59:01,946 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:59:01,950 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:59:01,954 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:59:01,956 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:59:01,957 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:59:01,958 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:59:01,959 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:59:01,960 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:59:01,965 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:59:01,965 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:59:01,965 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:59:01,967 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:59:01,967 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:59:01,968 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:59:01,968 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:59:01,970 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:59:01,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:59:01,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:59:01,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:59:01,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:59:01,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:59:01,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:59:01,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:59:01,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:59:01,975 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:59:01,977 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:59:02,011 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:59:02,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:59:02,012 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:59:02,012 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:59:02,013 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:59:02,013 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:59:02,013 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:59:02,013 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:59:02,014 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:59:02,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:59:02,015 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:59:02,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:59:02,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:59:02,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:59:02,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:59:02,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:59:02,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:59:02,016 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:59:02,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:59:02,017 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:59:02,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:59:02,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:59:02,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:59:02,017 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:59:02,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:59:02,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:59:02,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:59:02,018 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:59:02,018 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:59:02,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:59:02,019 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:59:02,019 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:59:02,019 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:59:02,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7dffe766d259411d55a5393012f150d80e63eb09c0b69cb40e513f715e96f78e [2022-07-19 16:59:02,225 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:59:02,243 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:59:02,245 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:59:02,246 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:59:02,247 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:59:02,248 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2022-07-19 16:59:02,312 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097e73db3/ff2aad244b924eb99df8cc55a18965d3/FLAGce92bfe86 [2022-07-19 16:59:02,837 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:59:02,837 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c [2022-07-19 16:59:02,866 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097e73db3/ff2aad244b924eb99df8cc55a18965d3/FLAGce92bfe86 [2022-07-19 16:59:03,281 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/097e73db3/ff2aad244b924eb99df8cc55a18965d3 [2022-07-19 16:59:03,283 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:59:03,283 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:59:03,286 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:59:03,286 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:59:03,288 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:59:03,289 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:03,290 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41c1393b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03, skipping insertion in model container [2022-07-19 16:59:03,290 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:03,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:59:03,372 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:59:03,665 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2022-07-19 16:59:03,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:59:03,860 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:59:03,897 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product25.cil.c[27637,27650] [2022-07-19 16:59:03,936 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:59:03,956 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:59:03,957 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03 WrapperNode [2022-07-19 16:59:03,957 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:59:03,958 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:59:03,958 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:59:03,958 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:59:03,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:03,995 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,044 INFO L137 Inliner]: procedures = 89, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 842 [2022-07-19 16:59:04,045 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:59:04,045 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:59:04,046 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:59:04,046 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:59:04,054 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,054 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,062 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,063 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,080 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,091 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,097 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,105 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:59:04,106 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:59:04,106 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:59:04,106 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:59:04,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (1/1) ... [2022-07-19 16:59:04,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:59:04,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:59:04,181 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) [2022-07-19 16:59:04,227 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 [2022-07-19 16:59:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:59:04,246 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-19 16:59:04,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-19 16:59:04,247 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:59:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:59:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:59:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:59:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:59:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:59:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-19 16:59:04,248 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-19 16:59:04,248 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:59:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:59:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:59:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:59:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:59:04,249 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:59:04,249 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:59:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:59:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:59:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:59:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:59:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:59:04,250 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:59:04,250 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:59:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-19 16:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-19 16:59:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:59:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:59:04,251 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:59:04,251 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-19 16:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-19 16:59:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:59:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:59:04,252 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:59:04,252 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:59:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:59:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:59:04,253 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:59:04,253 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:59:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:59:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:59:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:59:04,254 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:59:04,254 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:59:04,255 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:59:04,255 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:59:04,399 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:59:04,401 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:59:05,362 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:59:05,378 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:59:05,378 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:59:05,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:59:05 BoogieIcfgContainer [2022-07-19 16:59:05,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:59:05,382 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:59:05,382 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:59:05,404 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:59:05,405 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:59:03" (1/3) ... [2022-07-19 16:59:05,405 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c4a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:59:05, skipping insertion in model container [2022-07-19 16:59:05,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:59:03" (2/3) ... [2022-07-19 16:59:05,406 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@666c4a31 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:59:05, skipping insertion in model container [2022-07-19 16:59:05,406 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:59:05" (3/3) ... [2022-07-19 16:59:05,407 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product25.cil.c [2022-07-19 16:59:05,418 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:59:05,420 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:59:05,527 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:59:05,533 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5f72915a, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3d7df394 [2022-07-19 16:59:05,534 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:59:05,541 INFO L276 IsEmpty]: Start isEmpty. Operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) [2022-07-19 16:59:05,565 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 16:59:05,566 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:05,566 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:05,567 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:05,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:05,572 INFO L85 PathProgramCache]: Analyzing trace with hash 779665332, now seen corresponding path program 1 times [2022-07-19 16:59:05,580 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:05,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2055383675] [2022-07-19 16:59:05,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:05,584 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:05,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:06,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:06,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:06,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:06,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:59:06,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:59:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:59:06,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:59:06,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:59:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:06,521 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:06,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:06,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2055383675] [2022-07-19 16:59:06,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2055383675] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:06,524 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:06,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:06,526 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [399782833] [2022-07-19 16:59:06,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:06,533 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:06,533 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:06,566 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:06,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:06,576 INFO L87 Difference]: Start difference. First operand has 570 states, 444 states have (on average 1.6891891891891893) internal successors, (750), 462 states have internal predecessors, (750), 100 states have call successors, (100), 24 states have call predecessors, (100), 24 states have return successors, (100), 97 states have call predecessors, (100), 100 states have call successors, (100) Second operand has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:13,600 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:13,601 INFO L93 Difference]: Finished difference Result 1500 states and 2604 transitions. [2022-07-19 16:59:13,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:13,612 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 85 [2022-07-19 16:59:13,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:13,646 INFO L225 Difference]: With dead ends: 1500 [2022-07-19 16:59:13,646 INFO L226 Difference]: Without dead ends: 930 [2022-07-19 16:59:13,664 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:13,668 INFO L413 NwaCegarLoop]: 978 mSDtfsCounter, 1746 mSDsluCounter, 2756 mSDsCounter, 0 mSdLazyCounter, 5440 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1851 SdHoareTripleChecker+Valid, 3734 SdHoareTripleChecker+Invalid, 6001 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 5440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:13,669 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1851 Valid, 3734 Invalid, 6001 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [561 Valid, 5440 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 16:59:13,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-07-19 16:59:13,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 573. [2022-07-19 16:59:13,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.680089485458613) internal successors, (751), 465 states have internal predecessors, (751), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-19 16:59:13,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 952 transitions. [2022-07-19 16:59:13,865 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 952 transitions. Word has length 85 [2022-07-19 16:59:13,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:13,866 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 952 transitions. [2022-07-19 16:59:13,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.777777777777778) internal successors, (61), 6 states have internal predecessors, (61), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:13,867 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 952 transitions. [2022-07-19 16:59:13,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:59:13,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:13,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:13,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:59:13,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:13,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:13,876 INFO L85 PathProgramCache]: Analyzing trace with hash 1669910648, now seen corresponding path program 1 times [2022-07-19 16:59:13,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:13,876 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [318293241] [2022-07-19 16:59:13,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:13,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:13,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:14,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:14,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:14,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:14,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:59:14,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:59:14,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:59:14,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:59:14,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:59:14,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:14,236 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:14,237 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:14,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [318293241] [2022-07-19 16:59:14,237 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [318293241] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:14,237 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:14,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:14,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1187965045] [2022-07-19 16:59:14,238 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:14,239 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:14,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:14,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:14,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:14,240 INFO L87 Difference]: Start difference. First operand 573 states and 952 transitions. Second operand has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:20,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:20,612 INFO L93 Difference]: Finished difference Result 1490 states and 2550 transitions. [2022-07-19 16:59:20,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:59:20,613 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 86 [2022-07-19 16:59:20,613 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:20,622 INFO L225 Difference]: With dead ends: 1490 [2022-07-19 16:59:20,622 INFO L226 Difference]: Without dead ends: 933 [2022-07-19 16:59:20,630 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:59:20,631 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 2214 mSDsluCounter, 2525 mSDsCounter, 0 mSdLazyCounter, 5452 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2319 SdHoareTripleChecker+Valid, 3449 SdHoareTripleChecker+Invalid, 6227 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 5452 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:20,632 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2319 Valid, 3449 Invalid, 6227 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [775 Valid, 5452 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-19 16:59:20,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2022-07-19 16:59:20,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 573. [2022-07-19 16:59:20,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 447 states have (on average 1.6778523489932886) internal successors, (750), 465 states have internal predecessors, (750), 101 states have call successors, (101), 24 states have call predecessors, (101), 24 states have return successors, (100), 96 states have call predecessors, (100), 98 states have call successors, (100) [2022-07-19 16:59:20,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2022-07-19 16:59:20,720 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 86 [2022-07-19 16:59:20,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:20,722 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2022-07-19 16:59:20,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 6.888888888888889) internal successors, (62), 6 states have internal predecessors, (62), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:20,722 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2022-07-19 16:59:20,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:59:20,725 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:20,726 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:20,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:59:20,726 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:20,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:20,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1301787151, now seen corresponding path program 1 times [2022-07-19 16:59:20,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:20,727 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049141223] [2022-07-19 16:59:20,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:20,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:20,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:20,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:20,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:20,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:20,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:20,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:20,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:20,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:20,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:59:21,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:59:21,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:59:21,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:59:21,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:59:21,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:59:21,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:21,028 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:21,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:21,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049141223] [2022-07-19 16:59:21,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049141223] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:21,029 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:21,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:59:21,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593644200] [2022-07-19 16:59:21,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:21,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:59:21,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:21,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:59:21,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:59:21,032 INFO L87 Difference]: Start difference. First operand 573 states and 951 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:59:25,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:25,410 INFO L93 Difference]: Finished difference Result 1481 states and 2530 transitions. [2022-07-19 16:59:25,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:59:25,411 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2022-07-19 16:59:25,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:25,416 INFO L225 Difference]: With dead ends: 1481 [2022-07-19 16:59:25,416 INFO L226 Difference]: Without dead ends: 893 [2022-07-19 16:59:25,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:25,421 INFO L413 NwaCegarLoop]: 947 mSDtfsCounter, 2141 mSDsluCounter, 1174 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 762 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 2121 SdHoareTripleChecker+Invalid, 3409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 762 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:25,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 2121 Invalid, 3409 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [762 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:59:25,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 893 states. [2022-07-19 16:59:25,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 893 to 549. [2022-07-19 16:59:25,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 549 states, 426 states have (on average 1.6690140845070423) internal successors, (711), 442 states have internal predecessors, (711), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:25,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 549 states to 549 states and 908 transitions. [2022-07-19 16:59:25,490 INFO L78 Accepts]: Start accepts. Automaton has 549 states and 908 transitions. Word has length 86 [2022-07-19 16:59:25,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:25,490 INFO L495 AbstractCegarLoop]: Abstraction has 549 states and 908 transitions. [2022-07-19 16:59:25,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:59:25,491 INFO L276 IsEmpty]: Start isEmpty. Operand 549 states and 908 transitions. [2022-07-19 16:59:25,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 16:59:25,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:25,493 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:25,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:59:25,494 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:25,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:25,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1597666688, now seen corresponding path program 1 times [2022-07-19 16:59:25,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:25,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [280132207] [2022-07-19 16:59:25,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:25,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:25,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:25,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:25,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:25,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:25,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:25,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 16:59:25,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:59:25,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:59:25,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:59:25,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:59:25,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:25,860 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:25,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:25,860 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [280132207] [2022-07-19 16:59:25,861 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [280132207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:25,861 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:25,861 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:25,861 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1500700832] [2022-07-19 16:59:25,861 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:25,862 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:25,862 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:25,863 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:25,863 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:25,863 INFO L87 Difference]: Start difference. First operand 549 states and 908 transitions. Second operand has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:31,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:31,426 INFO L93 Difference]: Finished difference Result 1444 states and 2461 transitions. [2022-07-19 16:59:31,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:31,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 87 [2022-07-19 16:59:31,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:31,433 INFO L225 Difference]: With dead ends: 1444 [2022-07-19 16:59:31,433 INFO L226 Difference]: Without dead ends: 887 [2022-07-19 16:59:31,437 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:31,438 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 2163 mSDsluCounter, 2608 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2267 SdHoareTripleChecker+Valid, 3544 SdHoareTripleChecker+Invalid, 5980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:31,438 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2267 Valid, 3544 Invalid, 5980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 5213 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-19 16:59:31,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-07-19 16:59:31,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 543. [2022-07-19 16:59:31,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 420 states have (on average 1.661904761904762) internal successors, (698), 436 states have internal predecessors, (698), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:31,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 895 transitions. [2022-07-19 16:59:31,512 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 895 transitions. Word has length 87 [2022-07-19 16:59:31,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:31,512 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 895 transitions. [2022-07-19 16:59:31,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.0) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:31,513 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 895 transitions. [2022-07-19 16:59:31,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 16:59:31,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:31,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:31,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:59:31,515 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:31,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:31,516 INFO L85 PathProgramCache]: Analyzing trace with hash -1432546400, now seen corresponding path program 1 times [2022-07-19 16:59:31,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:31,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220984415] [2022-07-19 16:59:31,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:31,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:31,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:31,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:31,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:31,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:31,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:31,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 16:59:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:59:31,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:59:31,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:59:31,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:59:31,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:31,864 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:31,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:31,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220984415] [2022-07-19 16:59:31,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220984415] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:31,865 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:31,865 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:31,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581993217] [2022-07-19 16:59:31,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:31,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:31,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:31,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:31,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:31,869 INFO L87 Difference]: Start difference. First operand 543 states and 895 transitions. Second operand has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:37,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:37,650 INFO L93 Difference]: Finished difference Result 1414 states and 2410 transitions. [2022-07-19 16:59:37,651 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:37,651 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 88 [2022-07-19 16:59:37,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:37,656 INFO L225 Difference]: With dead ends: 1414 [2022-07-19 16:59:37,656 INFO L226 Difference]: Without dead ends: 887 [2022-07-19 16:59:37,660 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:37,660 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1068 mSDsluCounter, 2713 mSDsCounter, 0 mSdLazyCounter, 5331 mSolverCounterSat, 342 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1173 SdHoareTripleChecker+Valid, 3610 SdHoareTripleChecker+Invalid, 5673 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 342 IncrementalHoareTripleChecker+Valid, 5331 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:37,661 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1173 Valid, 3610 Invalid, 5673 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [342 Valid, 5331 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-19 16:59:37,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-07-19 16:59:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 543. [2022-07-19 16:59:37,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 543 states, 420 states have (on average 1.6595238095238096) internal successors, (697), 436 states have internal predecessors, (697), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:37,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 894 transitions. [2022-07-19 16:59:37,737 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 894 transitions. Word has length 88 [2022-07-19 16:59:37,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:37,738 INFO L495 AbstractCegarLoop]: Abstraction has 543 states and 894 transitions. [2022-07-19 16:59:37,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.111111111111111) internal successors, (64), 6 states have internal predecessors, (64), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:37,738 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 894 transitions. [2022-07-19 16:59:37,740 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 16:59:37,740 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:37,740 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:37,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:59:37,741 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:37,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:37,741 INFO L85 PathProgramCache]: Analyzing trace with hash -132261539, now seen corresponding path program 1 times [2022-07-19 16:59:37,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:37,742 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872512461] [2022-07-19 16:59:37,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:37,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:37,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:37,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:37,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:37,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:37,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:37,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:37,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:37,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:37,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:59:38,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 16:59:38,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:59:38,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:59:38,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:59:38,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:38,045 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:38,046 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:38,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872512461] [2022-07-19 16:59:38,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872512461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:38,046 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:38,046 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:38,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [965098224] [2022-07-19 16:59:38,046 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:38,047 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:38,047 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:38,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:38,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:38,048 INFO L87 Difference]: Start difference. First operand 543 states and 894 transitions. Second operand has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:43,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:43,383 INFO L93 Difference]: Finished difference Result 1432 states and 2430 transitions. [2022-07-19 16:59:43,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:43,384 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 89 [2022-07-19 16:59:43,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:43,389 INFO L225 Difference]: With dead ends: 1432 [2022-07-19 16:59:43,390 INFO L226 Difference]: Without dead ends: 881 [2022-07-19 16:59:43,397 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:43,401 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 2141 mSDsluCounter, 2451 mSDsCounter, 0 mSdLazyCounter, 5128 mSolverCounterSat, 767 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2246 SdHoareTripleChecker+Valid, 3339 SdHoareTripleChecker+Invalid, 5895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 767 IncrementalHoareTripleChecker+Valid, 5128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:43,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2246 Valid, 3339 Invalid, 5895 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [767 Valid, 5128 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 16:59:43,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-19 16:59:43,499 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 537. [2022-07-19 16:59:43,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6521739130434783) internal successors, (684), 430 states have internal predecessors, (684), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:43,504 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 881 transitions. [2022-07-19 16:59:43,504 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 881 transitions. Word has length 89 [2022-07-19 16:59:43,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:43,505 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 881 transitions. [2022-07-19 16:59:43,505 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.222222222222222) internal successors, (65), 6 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:43,505 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 881 transitions. [2022-07-19 16:59:43,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 16:59:43,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:43,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:43,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:59:43,508 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:43,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:43,509 INFO L85 PathProgramCache]: Analyzing trace with hash 583150753, now seen corresponding path program 1 times [2022-07-19 16:59:43,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:43,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1782535113] [2022-07-19 16:59:43,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:43,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:43,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:43,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:43,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:43,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:59:43,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 16:59:43,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:59:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:59:43,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 16:59:43,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:43,819 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:43,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:43,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1782535113] [2022-07-19 16:59:43,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1782535113] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:43,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:43,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:43,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098347005] [2022-07-19 16:59:43,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:43,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:43,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:43,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:43,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:43,821 INFO L87 Difference]: Start difference. First operand 537 states and 881 transitions. Second operand has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:49,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:49,835 INFO L93 Difference]: Finished difference Result 1402 states and 2381 transitions. [2022-07-19 16:59:49,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:49,836 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 90 [2022-07-19 16:59:49,836 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:49,841 INFO L225 Difference]: With dead ends: 1402 [2022-07-19 16:59:49,841 INFO L226 Difference]: Without dead ends: 881 [2022-07-19 16:59:49,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:49,844 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1046 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 5274 mSolverCounterSat, 343 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1150 SdHoareTripleChecker+Valid, 3515 SdHoareTripleChecker+Invalid, 5617 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 343 IncrementalHoareTripleChecker+Valid, 5274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1150 Valid, 3515 Invalid, 5617 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [343 Valid, 5274 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-19 16:59:49,846 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-19 16:59:49,924 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 537. [2022-07-19 16:59:49,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6497584541062802) internal successors, (683), 430 states have internal predecessors, (683), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:49,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 880 transitions. [2022-07-19 16:59:49,929 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 880 transitions. Word has length 90 [2022-07-19 16:59:49,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:49,929 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 880 transitions. [2022-07-19 16:59:49,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.333333333333333) internal successors, (66), 6 states have internal predecessors, (66), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:49,929 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 880 transitions. [2022-07-19 16:59:49,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 16:59:49,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:49,932 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:49,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:59:49,932 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:49,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:49,933 INFO L85 PathProgramCache]: Analyzing trace with hash 1082133889, now seen corresponding path program 1 times [2022-07-19 16:59:49,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:49,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763127976] [2022-07-19 16:59:49,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:49,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:50,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:50,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:59:50,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:59:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:59:50,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:59:50,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:59:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:50,268 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:50,268 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:50,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763127976] [2022-07-19 16:59:50,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763127976] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:50,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:50,269 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:50,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872724093] [2022-07-19 16:59:50,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:50,269 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:50,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:50,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:50,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:50,270 INFO L87 Difference]: Start difference. First operand 537 states and 880 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:55,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:55,542 INFO L93 Difference]: Finished difference Result 1420 states and 2399 transitions. [2022-07-19 16:59:55,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:59:55,542 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-07-19 16:59:55,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:55,547 INFO L225 Difference]: With dead ends: 1420 [2022-07-19 16:59:55,548 INFO L226 Difference]: Without dead ends: 875 [2022-07-19 16:59:55,550 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:59:55,551 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 2085 mSDsluCounter, 2567 mSDsCounter, 0 mSdLazyCounter, 5076 mSolverCounterSat, 758 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2190 SdHoareTripleChecker+Valid, 3462 SdHoareTripleChecker+Invalid, 5834 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 758 IncrementalHoareTripleChecker+Valid, 5076 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:55,551 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2190 Valid, 3462 Invalid, 5834 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [758 Valid, 5076 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 16:59:55,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-07-19 16:59:55,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 531. [2022-07-19 16:59:55,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.642156862745098) internal successors, (670), 424 states have internal predecessors, (670), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 16:59:55,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 867 transitions. [2022-07-19 16:59:55,627 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 867 transitions. Word has length 91 [2022-07-19 16:59:55,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:59:55,627 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 867 transitions. [2022-07-19 16:59:55,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:59:55,628 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 867 transitions. [2022-07-19 16:59:55,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 16:59:55,630 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:59:55,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:59:55,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:59:55,630 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:59:55,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:59:55,631 INFO L85 PathProgramCache]: Analyzing trace with hash -568794912, now seen corresponding path program 1 times [2022-07-19 16:59:55,631 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:59:55,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749954515] [2022-07-19 16:59:55,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:59:55,631 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:59:55,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:55,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,869 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:55,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:59:55,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:59:55,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:59:55,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:59:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:59:55,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:59:55,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:59:55,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:59:55,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:59:55,958 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:59:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:59:55,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749954515] [2022-07-19 16:59:55,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749954515] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:59:55,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:59:55,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:59:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443682367] [2022-07-19 16:59:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:59:55,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:59:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:59:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:59:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:59:55,960 INFO L87 Difference]: Start difference. First operand 531 states and 867 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:01,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:01,108 INFO L93 Difference]: Finished difference Result 1390 states and 2352 transitions. [2022-07-19 17:00:01,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:00:01,108 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 91 [2022-07-19 17:00:01,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:01,113 INFO L225 Difference]: With dead ends: 1390 [2022-07-19 17:00:01,113 INFO L226 Difference]: Without dead ends: 875 [2022-07-19 17:00:01,116 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 17:00:01,116 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 1522 mSDsluCounter, 2574 mSDsCounter, 0 mSdLazyCounter, 5028 mSolverCounterSat, 554 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1626 SdHoareTripleChecker+Valid, 3435 SdHoareTripleChecker+Invalid, 5582 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 554 IncrementalHoareTripleChecker+Valid, 5028 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:01,117 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1626 Valid, 3435 Invalid, 5582 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [554 Valid, 5028 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 17:00:01,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-07-19 17:00:01,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 531. [2022-07-19 17:00:01,190 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6397058823529411) internal successors, (669), 424 states have internal predecessors, (669), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 17:00:01,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 866 transitions. [2022-07-19 17:00:01,193 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 866 transitions. Word has length 91 [2022-07-19 17:00:01,193 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:01,193 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 866 transitions. [2022-07-19 17:00:01,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 6 states have internal predecessors, (67), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:01,194 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 866 transitions. [2022-07-19 17:00:01,195 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 17:00:01,196 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:01,196 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:01,196 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 17:00:01,196 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:01,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:01,197 INFO L85 PathProgramCache]: Analyzing trace with hash -1411117529, now seen corresponding path program 1 times [2022-07-19 17:00:01,197 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:01,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851097116] [2022-07-19 17:00:01,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:01,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:01,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:01,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:01,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:01,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:00:01,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:00:01,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:00:01,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:00:01,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:01,530 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:00:01,531 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:01,531 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851097116] [2022-07-19 17:00:01,531 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851097116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:01,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:01,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:00:01,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [345262380] [2022-07-19 17:00:01,532 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:01,532 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:00:01,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:01,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:00:01,533 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:01,533 INFO L87 Difference]: Start difference. First operand 531 states and 866 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:06,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:06,725 INFO L93 Difference]: Finished difference Result 1402 states and 2362 transitions. [2022-07-19 17:00:06,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 17:00:06,726 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-07-19 17:00:06,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:06,730 INFO L225 Difference]: With dead ends: 1402 [2022-07-19 17:00:06,731 INFO L226 Difference]: Without dead ends: 887 [2022-07-19 17:00:06,733 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-07-19 17:00:06,733 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 1517 mSDsluCounter, 2646 mSDsCounter, 0 mSdLazyCounter, 5000 mSolverCounterSat, 561 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1622 SdHoareTripleChecker+Valid, 3518 SdHoareTripleChecker+Invalid, 5561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 561 IncrementalHoareTripleChecker+Valid, 5000 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:06,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1622 Valid, 3518 Invalid, 5561 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [561 Valid, 5000 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 17:00:06,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-07-19 17:00:06,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 537. [2022-07-19 17:00:06,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 537 states, 414 states have (on average 1.6304347826086956) internal successors, (675), 430 states have internal predecessors, (675), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 17:00:06,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 537 states to 537 states and 872 transitions. [2022-07-19 17:00:06,852 INFO L78 Accepts]: Start accepts. Automaton has 537 states and 872 transitions. Word has length 92 [2022-07-19 17:00:06,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:06,852 INFO L495 AbstractCegarLoop]: Abstraction has 537 states and 872 transitions. [2022-07-19 17:00:06,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:06,853 INFO L276 IsEmpty]: Start isEmpty. Operand 537 states and 872 transitions. [2022-07-19 17:00:06,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 17:00:06,855 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:06,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:06,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 17:00:06,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:06,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:06,856 INFO L85 PathProgramCache]: Analyzing trace with hash -150200279, now seen corresponding path program 1 times [2022-07-19 17:00:06,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:06,856 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014882251] [2022-07-19 17:00:06,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:06,856 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:06,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:07,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:07,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:07,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,106 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:07,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 17:00:07,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 17:00:07,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 17:00:07,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 17:00:07,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:00:07,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:07,166 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:00:07,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:07,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014882251] [2022-07-19 17:00:07,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014882251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:07,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:07,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 17:00:07,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152677150] [2022-07-19 17:00:07,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:07,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 17:00:07,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:07,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 17:00:07,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:07,168 INFO L87 Difference]: Start difference. First operand 537 states and 872 transitions. Second operand has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:12,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:12,323 INFO L93 Difference]: Finished difference Result 1405 states and 2363 transitions. [2022-07-19 17:00:12,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 17:00:12,324 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 92 [2022-07-19 17:00:12,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:12,328 INFO L225 Difference]: With dead ends: 1405 [2022-07-19 17:00:12,328 INFO L226 Difference]: Without dead ends: 875 [2022-07-19 17:00:12,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-19 17:00:12,331 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 2029 mSDsluCounter, 2502 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 760 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 3357 SdHoareTripleChecker+Invalid, 5748 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 760 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:12,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 3357 Invalid, 5748 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [760 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 17:00:12,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 875 states. [2022-07-19 17:00:12,421 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 875 to 531. [2022-07-19 17:00:12,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 531 states, 408 states have (on average 1.6372549019607843) internal successors, (668), 424 states have internal predecessors, (668), 100 states have call successors, (100), 24 states have call predecessors, (100), 22 states have return successors, (97), 95 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-19 17:00:12,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 531 states to 531 states and 865 transitions. [2022-07-19 17:00:12,425 INFO L78 Accepts]: Start accepts. Automaton has 531 states and 865 transitions. Word has length 92 [2022-07-19 17:00:12,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:12,425 INFO L495 AbstractCegarLoop]: Abstraction has 531 states and 865 transitions. [2022-07-19 17:00:12,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.555555555555555) internal successors, (68), 6 states have internal predecessors, (68), 3 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:12,425 INFO L276 IsEmpty]: Start isEmpty. Operand 531 states and 865 transitions. [2022-07-19 17:00:12,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 17:00:12,428 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:12,428 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:12,428 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 17:00:12,428 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:12,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:12,429 INFO L85 PathProgramCache]: Analyzing trace with hash 524731654, now seen corresponding path program 1 times [2022-07-19 17:00:12,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:12,429 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977877538] [2022-07-19 17:00:12,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:12,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:12,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:12,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:12,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:12,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:12,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:12,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:12,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:00:12,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:00:12,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:00:12,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:00:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,710 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:12,710 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977877538] [2022-07-19 17:00:12,710 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977877538] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:12,710 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1252218659] [2022-07-19 17:00:12,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:12,711 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:12,711 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:12,719 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:00:12,726 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 17:00:12,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:12,985 INFO L263 TraceCheckSpWp]: Trace formula consists of 1557 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:00:12,994 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:13,082 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:13,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:13,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1252218659] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:13,083 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:13,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:00:13,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410307452] [2022-07-19 17:00:13,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:13,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:13,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:13,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:13,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:13,084 INFO L87 Difference]: Start difference. First operand 531 states and 865 transitions. Second operand has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:13,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:13,296 INFO L93 Difference]: Finished difference Result 1505 states and 2485 transitions. [2022-07-19 17:00:13,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:13,297 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-07-19 17:00:13,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:13,301 INFO L225 Difference]: With dead ends: 1505 [2022-07-19 17:00:13,301 INFO L226 Difference]: Without dead ends: 992 [2022-07-19 17:00:13,303 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 110 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:13,304 INFO L413 NwaCegarLoop]: 949 mSDtfsCounter, 811 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 811 SdHoareTripleChecker+Valid, 1712 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:13,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [811 Valid, 1712 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:00:13,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 992 states. [2022-07-19 17:00:13,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 992 to 977. [2022-07-19 17:00:13,475 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 977 states, 758 states have (on average 1.6517150395778364) internal successors, (1252), 789 states have internal predecessors, (1252), 176 states have call successors, (176), 43 states have call predecessors, (176), 42 states have return successors, (178), 170 states have call predecessors, (178), 173 states have call successors, (178) [2022-07-19 17:00:13,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 977 states to 977 states and 1606 transitions. [2022-07-19 17:00:13,481 INFO L78 Accepts]: Start accepts. Automaton has 977 states and 1606 transitions. Word has length 93 [2022-07-19 17:00:13,481 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:13,481 INFO L495 AbstractCegarLoop]: Abstraction has 977 states and 1606 transitions. [2022-07-19 17:00:13,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 23.666666666666668) internal successors, (71), 3 states have internal predecessors, (71), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:13,482 INFO L276 IsEmpty]: Start isEmpty. Operand 977 states and 1606 transitions. [2022-07-19 17:00:13,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 17:00:13,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:13,485 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:13,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-19 17:00:13,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-19 17:00:13,699 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:13,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:13,700 INFO L85 PathProgramCache]: Analyzing trace with hash 2071817116, now seen corresponding path program 1 times [2022-07-19 17:00:13,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:13,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [111334582] [2022-07-19 17:00:13,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:13,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:13,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:13,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:13,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:14,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:14,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,014 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:14,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:14,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:14,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 17:00:14,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 17:00:14,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 17:00:14,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-19 17:00:14,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,048 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:14,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:14,048 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [111334582] [2022-07-19 17:00:14,049 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [111334582] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:14,049 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274106200] [2022-07-19 17:00:14,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:14,049 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:14,049 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:14,050 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:00:14,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 17:00:14,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:14,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 1558 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 17:00:14,337 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:14,396 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:14,396 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:14,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274106200] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:14,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:14,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:00:14,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732466552] [2022-07-19 17:00:14,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:14,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:14,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:14,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:14,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:14,398 INFO L87 Difference]: Start difference. First operand 977 states and 1606 transitions. Second operand has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:14,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:14,668 INFO L93 Difference]: Finished difference Result 2397 states and 3969 transitions. [2022-07-19 17:00:14,668 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:14,669 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 94 [2022-07-19 17:00:14,669 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:14,675 INFO L225 Difference]: With dead ends: 2397 [2022-07-19 17:00:14,675 INFO L226 Difference]: Without dead ends: 1438 [2022-07-19 17:00:14,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 119 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:14,681 INFO L413 NwaCegarLoop]: 1004 mSDtfsCounter, 810 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 810 SdHoareTripleChecker+Valid, 1767 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:14,681 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [810 Valid, 1767 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:00:14,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1438 states. [2022-07-19 17:00:14,981 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1438 to 1390. [2022-07-19 17:00:14,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1390 states, 1081 states have (on average 1.6651248843663276) internal successors, (1800), 1127 states have internal predecessors, (1800), 249 states have call successors, (249), 59 states have call predecessors, (249), 59 states have return successors, (256), 242 states have call predecessors, (256), 246 states have call successors, (256) [2022-07-19 17:00:14,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1390 states to 1390 states and 2305 transitions. [2022-07-19 17:00:14,991 INFO L78 Accepts]: Start accepts. Automaton has 1390 states and 2305 transitions. Word has length 94 [2022-07-19 17:00:14,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:14,992 INFO L495 AbstractCegarLoop]: Abstraction has 1390 states and 2305 transitions. [2022-07-19 17:00:14,992 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.0) internal successors, (72), 3 states have internal predecessors, (72), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 17:00:14,992 INFO L276 IsEmpty]: Start isEmpty. Operand 1390 states and 2305 transitions. [2022-07-19 17:00:14,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-07-19 17:00:14,996 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:14,996 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:15,031 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 17:00:15,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-19 17:00:15,211 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:15,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:15,212 INFO L85 PathProgramCache]: Analyzing trace with hash -932247246, now seen corresponding path program 1 times [2022-07-19 17:00:15,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:15,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398215991] [2022-07-19 17:00:15,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:15,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:15,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:15,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:15,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:15,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:15,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:15,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:00:15,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:00:15,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:00:15,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:00:15,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 17:00:15,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:15,510 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:00:15,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:15,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398215991] [2022-07-19 17:00:15,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398215991] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:15,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:15,511 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:00:15,511 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157761448] [2022-07-19 17:00:15,511 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:15,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:00:15,512 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:15,512 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:00:15,512 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:00:15,513 INFO L87 Difference]: Start difference. First operand 1390 states and 2305 transitions. Second operand has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:00:33,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:33,772 INFO L93 Difference]: Finished difference Result 6908 states and 12710 transitions. [2022-07-19 17:00:33,772 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 17:00:33,773 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 96 [2022-07-19 17:00:33,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:33,817 INFO L225 Difference]: With dead ends: 6908 [2022-07-19 17:00:33,817 INFO L226 Difference]: Without dead ends: 5536 [2022-07-19 17:00:33,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 17:00:33,831 INFO L413 NwaCegarLoop]: 1168 mSDtfsCounter, 3873 mSDsluCounter, 2909 mSDsCounter, 0 mSdLazyCounter, 8591 mSolverCounterSat, 2390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3984 SdHoareTripleChecker+Valid, 4077 SdHoareTripleChecker+Invalid, 10981 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2390 IncrementalHoareTripleChecker+Valid, 8591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 15.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:33,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3984 Valid, 4077 Invalid, 10981 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2390 Valid, 8591 Invalid, 0 Unknown, 0 Unchecked, 15.0s Time] [2022-07-19 17:00:33,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5536 states. [2022-07-19 17:00:34,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5536 to 3383. [2022-07-19 17:00:34,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3383 states, 2487 states have (on average 1.6344993968636912) internal successors, (4065), 2671 states have internal predecessors, (4065), 745 states have call successors, (745), 112 states have call predecessors, (745), 150 states have return successors, (1205), 743 states have call predecessors, (1205), 741 states have call successors, (1205) [2022-07-19 17:00:34,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3383 states to 3383 states and 6015 transitions. [2022-07-19 17:00:34,851 INFO L78 Accepts]: Start accepts. Automaton has 3383 states and 6015 transitions. Word has length 96 [2022-07-19 17:00:34,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:34,851 INFO L495 AbstractCegarLoop]: Abstraction has 3383 states and 6015 transitions. [2022-07-19 17:00:34,851 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.777777777777778) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 6 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:00:34,851 INFO L276 IsEmpty]: Start isEmpty. Operand 3383 states and 6015 transitions. [2022-07-19 17:00:34,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:00:34,858 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:34,858 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:34,858 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 17:00:34,858 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:34,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:34,859 INFO L85 PathProgramCache]: Analyzing trace with hash 1688077956, now seen corresponding path program 1 times [2022-07-19 17:00:34,859 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:34,859 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025829173] [2022-07-19 17:00:34,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:34,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:34,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:35,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:35,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:35,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:35,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:00:35,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:00:35,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:00:35,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:00:35,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:00:35,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,228 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:35,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:35,228 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2025829173] [2022-07-19 17:00:35,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2025829173] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:35,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1045926308] [2022-07-19 17:00:35,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:35,229 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:35,229 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:35,232 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:00:35,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-19 17:00:35,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:35,458 INFO L263 TraceCheckSpWp]: Trace formula consists of 1576 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-19 17:00:35,462 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:35,481 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:35,481 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:35,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1045926308] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:35,481 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:35,481 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:00:35,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257183996] [2022-07-19 17:00:35,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:35,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:35,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:35,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:35,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:35,482 INFO L87 Difference]: Start difference. First operand 3383 states and 6015 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:00:37,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:37,097 INFO L93 Difference]: Finished difference Result 10081 states and 18125 transitions. [2022-07-19 17:00:37,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:37,098 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 97 [2022-07-19 17:00:37,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:37,134 INFO L225 Difference]: With dead ends: 10081 [2022-07-19 17:00:37,134 INFO L226 Difference]: Without dead ends: 6717 [2022-07-19 17:00:37,152 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:37,152 INFO L413 NwaCegarLoop]: 1679 mSDtfsCounter, 853 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 853 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:37,153 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [853 Valid, 2530 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 17:00:37,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6717 states. [2022-07-19 17:00:38,774 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6717 to 6650. [2022-07-19 17:00:38,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6650 states, 4898 states have (on average 1.6380155165373622) internal successors, (8023), 5258 states have internal predecessors, (8023), 1456 states have call successors, (1456), 212 states have call predecessors, (1456), 295 states have return successors, (2449), 1467 states have call predecessors, (2449), 1450 states have call successors, (2449) [2022-07-19 17:00:38,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6650 states to 6650 states and 11928 transitions. [2022-07-19 17:00:38,851 INFO L78 Accepts]: Start accepts. Automaton has 6650 states and 11928 transitions. Word has length 97 [2022-07-19 17:00:38,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:38,852 INFO L495 AbstractCegarLoop]: Abstraction has 6650 states and 11928 transitions. [2022-07-19 17:00:38,852 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 17:00:38,853 INFO L276 IsEmpty]: Start isEmpty. Operand 6650 states and 11928 transitions. [2022-07-19 17:00:38,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 17:00:38,857 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:38,857 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:38,883 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-19 17:00:39,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:39,071 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:39,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:39,072 INFO L85 PathProgramCache]: Analyzing trace with hash -1595772090, now seen corresponding path program 1 times [2022-07-19 17:00:39,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:39,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1833787270] [2022-07-19 17:00:39,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:39,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:39,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:39,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:39,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:39,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:39,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:39,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:00:39,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:00:39,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:00:39,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 17:00:39,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 17:00:39,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,361 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:39,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:39,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1833787270] [2022-07-19 17:00:39,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1833787270] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:39,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220340400] [2022-07-19 17:00:39,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:39,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:39,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:39,364 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:00:39,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-19 17:00:39,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:39,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 1577 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 17:00:39,599 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:39,712 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:39,713 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:39,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220340400] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:39,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:39,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-19 17:00:39,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9930854] [2022-07-19 17:00:39,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:39,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 17:00:39,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:39,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 17:00:39,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:39,715 INFO L87 Difference]: Start difference. First operand 6650 states and 11928 transitions. Second operand has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:00:43,077 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:43,077 INFO L93 Difference]: Finished difference Result 19394 states and 35193 transitions. [2022-07-19 17:00:43,078 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 17:00:43,078 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) Word has length 97 [2022-07-19 17:00:43,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:43,136 INFO L225 Difference]: With dead ends: 19394 [2022-07-19 17:00:43,137 INFO L226 Difference]: Without dead ends: 12763 [2022-07-19 17:00:43,177 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 17:00:43,178 INFO L413 NwaCegarLoop]: 992 mSDtfsCounter, 720 mSDsluCounter, 777 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 720 SdHoareTripleChecker+Valid, 1769 SdHoareTripleChecker+Invalid, 123 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:43,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [720 Valid, 1769 Invalid, 123 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-19 17:00:43,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12763 states. [2022-07-19 17:00:46,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12763 to 12726. [2022-07-19 17:00:46,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12726 states, 9330 states have (on average 1.6086816720257235) internal successors, (15009), 10042 states have internal predecessors, (15009), 2816 states have call successors, (2816), 418 states have call predecessors, (2816), 579 states have return successors, (4880), 2835 states have call predecessors, (4880), 2806 states have call successors, (4880) [2022-07-19 17:00:46,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12726 states to 12726 states and 22705 transitions. [2022-07-19 17:00:46,591 INFO L78 Accepts]: Start accepts. Automaton has 12726 states and 22705 transitions. Word has length 97 [2022-07-19 17:00:46,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:46,591 INFO L495 AbstractCegarLoop]: Abstraction has 12726 states and 22705 transitions. [2022-07-19 17:00:46,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.333333333333332) internal successors, (73), 3 states have internal predecessors, (73), 3 states have call successors, (13), 3 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 17:00:46,592 INFO L276 IsEmpty]: Start isEmpty. Operand 12726 states and 22705 transitions. [2022-07-19 17:00:46,596 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 17:00:46,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:46,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:46,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-19 17:00:46,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-19 17:00:46,815 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:46,816 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:46,816 INFO L85 PathProgramCache]: Analyzing trace with hash 2097475999, now seen corresponding path program 1 times [2022-07-19 17:00:46,816 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:46,816 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1640624083] [2022-07-19 17:00:46,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:46,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:47,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:47,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:47,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:47,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:47,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:47,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:00:47,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:00:47,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:00:47,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:00:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 17:00:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:00:47,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 17:00:47,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1640624083] [2022-07-19 17:00:47,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1640624083] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 17:00:47,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1607235251] [2022-07-19 17:00:47,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:47,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 17:00:47,196 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 17:00:47,197 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 17:00:47,198 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-19 17:00:47,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:47,447 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-19 17:00:47,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 17:00:47,537 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 17:00:47,537 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 17:00:47,537 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1607235251] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:47,538 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 17:00:47,538 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9] total 12 [2022-07-19 17:00:47,538 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496237827] [2022-07-19 17:00:47,538 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:47,539 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 17:00:47,539 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:47,539 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 17:00:47,539 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 17:00:47,540 INFO L87 Difference]: Start difference. First operand 12726 states and 22705 transitions. Second operand has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:00:51,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:00:51,792 INFO L93 Difference]: Finished difference Result 25735 states and 46473 transitions. [2022-07-19 17:00:51,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 17:00:51,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) Word has length 102 [2022-07-19 17:00:51,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:00:51,869 INFO L225 Difference]: With dead ends: 25735 [2022-07-19 17:00:51,869 INFO L226 Difference]: Without dead ends: 13027 [2022-07-19 17:00:51,954 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=197, Unknown=0, NotChecked=0, Total=240 [2022-07-19 17:00:51,955 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 1027 mSDsluCounter, 2821 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 207 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 3808 SdHoareTripleChecker+Invalid, 465 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 207 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 17:00:51,955 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 3808 Invalid, 465 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [207 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 17:00:51,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13027 states. [2022-07-19 17:00:55,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13027 to 11265. [2022-07-19 17:00:55,063 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11265 states, 8293 states have (on average 1.595924273483661) internal successors, (13235), 8896 states have internal predecessors, (13235), 2450 states have call successors, (2450), 378 states have call predecessors, (2450), 521 states have return successors, (4184), 2466 states have call predecessors, (4184), 2440 states have call successors, (4184) [2022-07-19 17:00:55,203 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11265 states to 11265 states and 19869 transitions. [2022-07-19 17:00:55,207 INFO L78 Accepts]: Start accepts. Automaton has 11265 states and 19869 transitions. Word has length 102 [2022-07-19 17:00:55,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:00:55,207 INFO L495 AbstractCegarLoop]: Abstraction has 11265 states and 19869 transitions. [2022-07-19 17:00:55,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.2) internal successors, (76), 5 states have internal predecessors, (76), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (12), 3 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 17:00:55,208 INFO L276 IsEmpty]: Start isEmpty. Operand 11265 states and 19869 transitions. [2022-07-19 17:00:55,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 17:00:55,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:00:55,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:00:55,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-19 17:00:55,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-19 17:00:55,438 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:00:55,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:00:55,438 INFO L85 PathProgramCache]: Analyzing trace with hash -1471744497, now seen corresponding path program 1 times [2022-07-19 17:00:55,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:00:55,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1240574014] [2022-07-19 17:00:55,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:00:55,438 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:00:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:55,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:55,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:00:55,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:00:55,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:00:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,738 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:00:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:00:55,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 17:00:55,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 17:00:55,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:00:55,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 17:00:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:00:55,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:00:55,770 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 17:00:55,770 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:00:55,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1240574014] [2022-07-19 17:00:55,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1240574014] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:00:55,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:00:55,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:00:55,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723564242] [2022-07-19 17:00:55,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:00:55,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:00:55,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:00:55,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:00:55,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:00:55,773 INFO L87 Difference]: Start difference. First operand 11265 states and 19869 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 17:01:04,775 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:04,775 INFO L93 Difference]: Finished difference Result 25654 states and 46536 transitions. [2022-07-19 17:01:04,775 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:01:04,776 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-19 17:01:04,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:04,885 INFO L225 Difference]: With dead ends: 25654 [2022-07-19 17:01:04,885 INFO L226 Difference]: Without dead ends: 14407 [2022-07-19 17:01:04,979 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:01:04,980 INFO L413 NwaCegarLoop]: 903 mSDtfsCounter, 991 mSDsluCounter, 1294 mSDsCounter, 0 mSdLazyCounter, 2703 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1096 SdHoareTripleChecker+Valid, 2197 SdHoareTripleChecker+Invalid, 3034 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2703 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:04,980 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1096 Valid, 2197 Invalid, 3034 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2703 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-19 17:01:04,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14407 states. [2022-07-19 17:01:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14407 to 11407. [2022-07-19 17:01:08,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11407 states, 8405 states have (on average 1.589886972040452) internal successors, (13363), 9008 states have internal predecessors, (13363), 2460 states have call successors, (2460), 386 states have call predecessors, (2460), 541 states have return successors, (4239), 2472 states have call predecessors, (4239), 2450 states have call successors, (4239) [2022-07-19 17:01:08,204 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11407 states to 11407 states and 20062 transitions. [2022-07-19 17:01:08,206 INFO L78 Accepts]: Start accepts. Automaton has 11407 states and 20062 transitions. Word has length 102 [2022-07-19 17:01:08,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:08,207 INFO L495 AbstractCegarLoop]: Abstraction has 11407 states and 20062 transitions. [2022-07-19 17:01:08,207 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-19 17:01:08,207 INFO L276 IsEmpty]: Start isEmpty. Operand 11407 states and 20062 transitions. [2022-07-19 17:01:08,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 17:01:08,211 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:08,211 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:01:08,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 17:01:08,212 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:08,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:08,212 INFO L85 PathProgramCache]: Analyzing trace with hash 1739423797, now seen corresponding path program 1 times [2022-07-19 17:01:08,212 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:08,212 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993696179] [2022-07-19 17:01:08,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:08,213 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,388 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:08,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:08,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:08,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:01:08,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:01:08,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:01:08,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:01:08,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:01:08,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:01:08,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 17:01:08,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 17:01:08,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:08,530 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 17:01:08,530 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:08,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993696179] [2022-07-19 17:01:08,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [993696179] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:08,531 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:08,531 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:01:08,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252855475] [2022-07-19 17:01:08,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:08,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:01:08,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:08,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:01:08,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:01:08,532 INFO L87 Difference]: Start difference. First operand 11407 states and 20062 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:01:40,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:01:40,101 INFO L93 Difference]: Finished difference Result 49204 states and 96669 transitions. [2022-07-19 17:01:40,102 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 17:01:40,103 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) Word has length 110 [2022-07-19 17:01:40,103 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:01:40,558 INFO L225 Difference]: With dead ends: 49204 [2022-07-19 17:01:40,559 INFO L226 Difference]: Without dead ends: 37815 [2022-07-19 17:01:40,900 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 17:01:40,901 INFO L413 NwaCegarLoop]: 1227 mSDtfsCounter, 2926 mSDsluCounter, 3180 mSDsCounter, 0 mSdLazyCounter, 8777 mSolverCounterSat, 2003 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 15.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3037 SdHoareTripleChecker+Valid, 4407 SdHoareTripleChecker+Invalid, 10780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2003 IncrementalHoareTripleChecker+Valid, 8777 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 16.4s IncrementalHoareTripleChecker+Time [2022-07-19 17:01:40,901 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3037 Valid, 4407 Invalid, 10780 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2003 Valid, 8777 Invalid, 0 Unknown, 0 Unchecked, 16.4s Time] [2022-07-19 17:01:40,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37815 states. [2022-07-19 17:01:47,697 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37815 to 22677. [2022-07-19 17:01:47,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22677 states, 16716 states have (on average 1.5868628858578608) internal successors, (26526), 17913 states have internal predecessors, (26526), 4875 states have call successors, (4875), 766 states have call predecessors, (4875), 1085 states have return successors, (9374), 4917 states have call predecessors, (9374), 4857 states have call successors, (9374) [2022-07-19 17:01:47,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22677 states to 22677 states and 40775 transitions. [2022-07-19 17:01:47,918 INFO L78 Accepts]: Start accepts. Automaton has 22677 states and 40775 transitions. Word has length 110 [2022-07-19 17:01:47,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:01:47,920 INFO L495 AbstractCegarLoop]: Abstraction has 22677 states and 40775 transitions. [2022-07-19 17:01:47,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 3 states have call successors, (15), 6 states have call predecessors, (15), 3 states have return successors, (13), 4 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-19 17:01:47,920 INFO L276 IsEmpty]: Start isEmpty. Operand 22677 states and 40775 transitions. [2022-07-19 17:01:47,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 17:01:47,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:01:47,924 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:01:47,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 17:01:47,925 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:01:47,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:01:47,925 INFO L85 PathProgramCache]: Analyzing trace with hash 383600225, now seen corresponding path program 1 times [2022-07-19 17:01:47,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:01:47,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272640614] [2022-07-19 17:01:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:01:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:01:47,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:48,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:01:48,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:01:48,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:01:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:01:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,184 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:01:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:01:48,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 17:01:48,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 17:01:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:01:48,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 17:01:48,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:01:48,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:01:48,214 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-19 17:01:48,214 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:01:48,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272640614] [2022-07-19 17:01:48,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272640614] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:01:48,214 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:01:48,214 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 17:01:48,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859059353] [2022-07-19 17:01:48,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:01:48,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 17:01:48,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:01:48,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 17:01:48,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 17:01:48,216 INFO L87 Difference]: Start difference. First operand 22677 states and 40775 transitions. Second operand has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:02:01,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 17:02:01,352 INFO L93 Difference]: Finished difference Result 51112 states and 96763 transitions. [2022-07-19 17:02:01,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 17:02:01,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 111 [2022-07-19 17:02:01,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 17:02:01,616 INFO L225 Difference]: With dead ends: 51112 [2022-07-19 17:02:01,616 INFO L226 Difference]: Without dead ends: 28453 [2022-07-19 17:02:01,853 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 17:02:01,853 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 1959 mSDsluCounter, 1205 mSDsCounter, 0 mSdLazyCounter, 2505 mSolverCounterSat, 703 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2065 SdHoareTripleChecker+Valid, 2112 SdHoareTripleChecker+Invalid, 3208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 703 IncrementalHoareTripleChecker+Valid, 2505 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 17:02:01,853 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2065 Valid, 2112 Invalid, 3208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [703 Valid, 2505 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 17:02:01,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28453 states. [2022-07-19 17:02:08,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28453 to 22757. [2022-07-19 17:02:08,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22757 states, 16788 states have (on average 1.5848224922563736) internal successors, (26606), 17969 states have internal predecessors, (26606), 4875 states have call successors, (4875), 798 states have call predecessors, (4875), 1093 states have return successors, (9334), 4909 states have call predecessors, (9334), 4857 states have call successors, (9334) [2022-07-19 17:02:08,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22757 states to 22757 states and 40815 transitions. [2022-07-19 17:02:08,504 INFO L78 Accepts]: Start accepts. Automaton has 22757 states and 40815 transitions. Word has length 111 [2022-07-19 17:02:08,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 17:02:08,504 INFO L495 AbstractCegarLoop]: Abstraction has 22757 states and 40815 transitions. [2022-07-19 17:02:08,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.571428571428571) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (15), 5 states have call predecessors, (15), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-07-19 17:02:08,504 INFO L276 IsEmpty]: Start isEmpty. Operand 22757 states and 40815 transitions. [2022-07-19 17:02:08,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 17:02:08,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 17:02:08,508 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 17:02:08,509 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 17:02:08,509 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 17:02:08,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 17:02:08,509 INFO L85 PathProgramCache]: Analyzing trace with hash 1809203665, now seen corresponding path program 1 times [2022-07-19 17:02:08,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 17:02:08,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761736858] [2022-07-19 17:02:08,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 17:02:08,510 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 17:02:08,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:08,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:08,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 17:02:08,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,773 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 17:02:08,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 17:02:08,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 17:02:08,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 17:02:08,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 17:02:08,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 17:02:08,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 17:02:08,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 17:02:08,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 17:02:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 17:02:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 17:02:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 17:02:08,816 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-19 17:02:08,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 17:02:08,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761736858] [2022-07-19 17:02:08,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [761736858] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 17:02:08,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 17:02:08,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 17:02:08,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763308277] [2022-07-19 17:02:08,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 17:02:08,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 17:02:08,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 17:02:08,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 17:02:08,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 17:02:08,818 INFO L87 Difference]: Start difference. First operand 22757 states and 40815 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14)