./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product09.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_product09.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 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:55:24,981 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:55:25,002 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:55:25,026 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:55:25,027 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:55:25,028 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:55:25,028 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:55:25,030 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:55:25,032 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:55:25,033 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:55:25,034 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:55:25,035 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:55:25,036 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:55:25,038 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:55:25,039 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:55:25,041 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:55:25,042 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:55:25,046 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:55:25,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:55:25,049 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:55:25,050 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:55:25,056 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:55:25,056 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:55:25,057 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:55:25,058 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:55:25,059 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:55:25,059 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:55:25,060 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:55:25,061 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:55:25,061 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:55:25,065 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:55:25,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:55:25,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:55:25,066 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:55:25,067 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:55:25,067 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:55:25,068 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:55:25,069 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:55:25,069 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:55:25,069 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:55:25,070 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:55:25,071 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:55:25,072 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:55:25,092 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:55:25,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:55:25,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:55:25,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:55:25,093 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:55:25,094 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:55:25,094 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:55:25,094 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:55:25,094 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:55:25,095 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:55:25,095 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:55:25,095 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:55:25,096 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:55:25,097 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:55:25,097 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:55:25,098 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:55:25,098 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:55:25,098 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:55:25,098 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:55:25,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:55:25,099 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:55:25,099 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:55:25,099 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:55:25,099 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:55:25,099 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:55:25,100 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:55:25,100 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:55:25,100 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:55:25,100 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2022-07-19 16:55:25,280 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:55:25,306 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:55:25,308 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:55:25,309 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:55:25,309 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:55:25,310 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-07-19 16:55:25,364 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50298399/45a390c9d9244a7585848b0c4f911fef/FLAG9da691caf [2022-07-19 16:55:25,808 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:55:25,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-07-19 16:55:25,838 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50298399/45a390c9d9244a7585848b0c4f911fef/FLAG9da691caf [2022-07-19 16:55:25,853 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a50298399/45a390c9d9244a7585848b0c4f911fef [2022-07-19 16:55:25,855 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:55:25,857 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:55:25,858 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:55:25,858 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:55:25,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:55:25,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:55:25" (1/1) ... [2022-07-19 16:55:25,862 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@110ebc8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:25, skipping insertion in model container [2022-07-19 16:55:25,862 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:55:25" (1/1) ... [2022-07-19 16:55:25,867 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:55:25,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:55:26,182 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_product09.cil.c[21710,21723] [2022-07-19 16:55:26,336 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:55:26,349 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:55:26,383 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_product09.cil.c[21710,21723] [2022-07-19 16:55:26,455 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:55:26,486 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:55:26,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26 WrapperNode [2022-07-19 16:55:26,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:55:26,500 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:55:26,501 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:55:26,501 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:55:26,505 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,562 INFO L137 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 808 [2022-07-19 16:55:26,562 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:55:26,563 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:55:26,563 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:55:26,563 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:55:26,568 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,568 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,574 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,575 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,602 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,611 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,619 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:55:26,620 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:55:26,620 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:55:26,620 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:55:26,621 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (1/1) ... [2022-07-19 16:55:26,649 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:55:26,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:55:26,684 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 16:55:26,702 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 16:55:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:55:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-19 16:55:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-19 16:55:26,714 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:55:26,714 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:55:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:55:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:55:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-19 16:55:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-19 16:55:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:55:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:55:26,715 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:55:26,715 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:55:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:55:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:55:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:55:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:55:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:55:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:55:26,716 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:55:26,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:55:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:55:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:55:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-19 16:55:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-19 16:55:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:55:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:55:26,717 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-19 16:55:26,717 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-19 16:55:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:55:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:55:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:55:26,718 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:55:26,718 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:55:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:55:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:55:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:55:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:55:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:55:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:55:26,719 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:55:26,719 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:55:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:55:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:55:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:55:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:55:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:55:26,720 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:55:26,720 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:55:26,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:55:26,874 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:55:26,875 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:55:27,613 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:55:27,625 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:55:27,626 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:55:27,628 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:55:27 BoogieIcfgContainer [2022-07-19 16:55:27,628 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:55:27,631 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:55:27,631 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:55:27,633 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:55:27,634 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:55:25" (1/3) ... [2022-07-19 16:55:27,634 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24de4549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:55:27, skipping insertion in model container [2022-07-19 16:55:27,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:55:26" (2/3) ... [2022-07-19 16:55:27,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24de4549 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:55:27, skipping insertion in model container [2022-07-19 16:55:27,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:55:27" (3/3) ... [2022-07-19 16:55:27,636 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2022-07-19 16:55:27,645 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:55:27,645 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:55:27,696 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:55:27,702 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@2d9ece2d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@667cdf88 [2022-07-19 16:55:27,702 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:55:27,708 INFO L276 IsEmpty]: Start isEmpty. Operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-19 16:55:27,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 16:55:27,734 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:27,734 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 16:55:27,735 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:27,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:27,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1881157288, now seen corresponding path program 1 times [2022-07-19 16:55:27,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:27,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [45763090] [2022-07-19 16:55:27,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:27,747 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:27,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:28,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:28,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:28,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:28,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:55:28,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:55:28,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:55:28,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:55:28,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-19 16:55:28,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:28,362 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 16:55:28,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:28,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [45763090] [2022-07-19 16:55:28,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [45763090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:28,363 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:28,363 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:55:28,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1871689842] [2022-07-19 16:55:28,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:28,368 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:55:28,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:28,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:55:28,392 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:28,394 INFO L87 Difference]: Start difference. First operand has 555 states, 432 states have (on average 1.6944444444444444) internal successors, (732), 450 states have internal predecessors, (732), 98 states have call successors, (98), 23 states have call predecessors, (98), 23 states have return successors, (98), 95 states have call predecessors, (98), 98 states have call successors, (98) 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 16:55:34,101 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:34,101 INFO L93 Difference]: Finished difference Result 1464 states and 2552 transitions. [2022-07-19 16:55:34,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:55:34,104 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 16:55:34,104 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:34,129 INFO L225 Difference]: With dead ends: 1464 [2022-07-19 16:55:34,130 INFO L226 Difference]: Without dead ends: 909 [2022-07-19 16:55:34,135 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 16:55:34,137 INFO L413 NwaCegarLoop]: 957 mSDtfsCounter, 1689 mSDsluCounter, 2786 mSDsCounter, 0 mSdLazyCounter, 5255 mSolverCounterSat, 532 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1792 SdHoareTripleChecker+Valid, 3743 SdHoareTripleChecker+Invalid, 5787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 532 IncrementalHoareTripleChecker+Valid, 5255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:34,138 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1792 Valid, 3743 Invalid, 5787 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [532 Valid, 5255 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-19 16:55:34,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-07-19 16:55:34,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 558. [2022-07-19 16:55:34,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6850574712643678) internal successors, (733), 453 states have internal predecessors, (733), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-07-19 16:55:34,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2022-07-19 16:55:34,292 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 85 [2022-07-19 16:55:34,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:34,292 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2022-07-19 16:55:34,293 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 16:55:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2022-07-19 16:55:34,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:55:34,297 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:34,297 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 16:55:34,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:55:34,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:34,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:34,298 INFO L85 PathProgramCache]: Analyzing trace with hash 782189340, now seen corresponding path program 1 times [2022-07-19 16:55:34,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:34,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1998701128] [2022-07-19 16:55:34,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:34,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:34,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:34,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:34,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:34,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:34,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:34,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:34,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:55:34,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:55:34,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:55:34,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:55:34,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,558 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 16:55:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:34,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1998701128] [2022-07-19 16:55:34,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1998701128] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:34,559 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:34,559 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:55:34,559 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1777486566] [2022-07-19 16:55:34,559 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:34,560 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:55:34,560 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:34,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:55:34,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:34,561 INFO L87 Difference]: Start difference. First operand 558 states and 930 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 16:55:40,360 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:40,361 INFO L93 Difference]: Finished difference Result 1454 states and 2498 transitions. [2022-07-19 16:55:40,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:55:40,361 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 16:55:40,361 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:40,366 INFO L225 Difference]: With dead ends: 1454 [2022-07-19 16:55:40,366 INFO L226 Difference]: Without dead ends: 912 [2022-07-19 16:55:40,369 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:55:40,370 INFO L413 NwaCegarLoop]: 921 mSDtfsCounter, 1088 mSDsluCounter, 2748 mSDsCounter, 0 mSdLazyCounter, 5583 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1191 SdHoareTripleChecker+Valid, 3669 SdHoareTripleChecker+Invalid, 5912 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 5583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:40,370 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1191 Valid, 3669 Invalid, 5912 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [329 Valid, 5583 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-19 16:55:40,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-07-19 16:55:40,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 558. [2022-07-19 16:55:40,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 435 states have (on average 1.6827586206896552) internal successors, (732), 453 states have internal predecessors, (732), 99 states have call successors, (99), 23 states have call predecessors, (99), 23 states have return successors, (98), 94 states have call predecessors, (98), 96 states have call successors, (98) [2022-07-19 16:55:40,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 929 transitions. [2022-07-19 16:55:40,420 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 929 transitions. Word has length 86 [2022-07-19 16:55:40,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:40,420 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 929 transitions. [2022-07-19 16:55:40,420 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 16:55:40,420 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 929 transitions. [2022-07-19 16:55:40,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 16:55:40,423 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:40,423 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 16:55:40,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:55:40,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:40,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:40,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1830753775, now seen corresponding path program 1 times [2022-07-19 16:55:40,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:40,425 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2128076571] [2022-07-19 16:55:40,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:40,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:40,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:40,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:40,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:40,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,677 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:40,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:40,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-19 16:55:40,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:55:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:55:40,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:55:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,703 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 16:55:40,703 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:40,704 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2128076571] [2022-07-19 16:55:40,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2128076571] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:40,704 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:40,704 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:55:40,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2029248637] [2022-07-19 16:55:40,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:40,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:55:40,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:40,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:55:40,707 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:55:40,707 INFO L87 Difference]: Start difference. First operand 558 states and 929 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 16:55:44,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:44,630 INFO L93 Difference]: Finished difference Result 1445 states and 2478 transitions. [2022-07-19 16:55:44,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:55:44,631 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 16:55:44,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:44,635 INFO L225 Difference]: With dead ends: 1445 [2022-07-19 16:55:44,635 INFO L226 Difference]: Without dead ends: 872 [2022-07-19 16:55:44,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:44,638 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 2084 mSDsluCounter, 1132 mSDsCounter, 0 mSdLazyCounter, 2580 mSolverCounterSat, 716 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 2032 SdHoareTripleChecker+Invalid, 3296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 716 IncrementalHoareTripleChecker+Valid, 2580 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:44,639 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 2032 Invalid, 3296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [716 Valid, 2580 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:55:44,640 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-19 16:55:44,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 534. [2022-07-19 16:55:44,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 534 states, 414 states have (on average 1.673913043478261) internal successors, (693), 430 states have internal predecessors, (693), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:55:44,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2022-07-19 16:55:44,686 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 86 [2022-07-19 16:55:44,686 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:44,686 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2022-07-19 16:55:44,687 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 16:55:44,687 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2022-07-19 16:55:44,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-19 16:55:44,688 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:44,689 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 16:55:44,689 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:55:44,689 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:44,689 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:44,689 INFO L85 PathProgramCache]: Analyzing trace with hash 273510260, now seen corresponding path program 1 times [2022-07-19 16:55:44,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:44,690 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145670372] [2022-07-19 16:55:44,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:44,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:44,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:44,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:44,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-19 16:55:44,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:55:44,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:55:44,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:55:44,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-19 16:55:44,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,979 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 16:55:44,979 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:44,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145670372] [2022-07-19 16:55:44,979 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145670372] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:44,980 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:44,980 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:55:44,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533392643] [2022-07-19 16:55:44,980 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:44,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:55:44,990 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:44,990 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:55:44,991 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:44,991 INFO L87 Difference]: Start difference. First operand 534 states and 886 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 16:55:49,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:49,738 INFO L93 Difference]: Finished difference Result 1408 states and 2409 transitions. [2022-07-19 16:55:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:55:49,739 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 16:55:49,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:49,743 INFO L225 Difference]: With dead ends: 1408 [2022-07-19 16:55:49,743 INFO L226 Difference]: Without dead ends: 866 [2022-07-19 16:55:49,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:55:49,754 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 2109 mSDsluCounter, 2482 mSDsCounter, 0 mSdLazyCounter, 5058 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 3366 SdHoareTripleChecker+Invalid, 5776 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 5058 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:49,756 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 3366 Invalid, 5776 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 5058 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 16:55:49,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-19 16:55:49,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-07-19 16:55:49,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6666666666666667) internal successors, (680), 424 states have internal predecessors, (680), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:55:49,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 873 transitions. [2022-07-19 16:55:49,832 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 873 transitions. Word has length 87 [2022-07-19 16:55:49,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:49,832 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 873 transitions. [2022-07-19 16:55:49,833 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 16:55:49,833 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 873 transitions. [2022-07-19 16:55:49,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-19 16:55:49,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:49,835 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 16:55:49,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:55:49,836 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:49,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:49,836 INFO L85 PathProgramCache]: Analyzing trace with hash 65130564, now seen corresponding path program 1 times [2022-07-19 16:55:49,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:49,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752703483] [2022-07-19 16:55:49,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:49,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:49,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:49,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:50,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:50,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 16:55:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:55:50,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:55:50,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:55:50,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:55:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,122 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 16:55:50,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:50,122 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752703483] [2022-07-19 16:55:50,122 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752703483] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:50,123 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:50,123 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:55:50,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1392836040] [2022-07-19 16:55:50,123 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:50,124 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:55:50,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:50,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:55:50,124 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:50,126 INFO L87 Difference]: Start difference. First operand 528 states and 873 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 16:55:54,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:54,807 INFO L93 Difference]: Finished difference Result 1378 states and 2358 transitions. [2022-07-19 16:55:54,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:55:54,808 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 16:55:54,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:54,811 INFO L225 Difference]: With dead ends: 1378 [2022-07-19 16:55:54,812 INFO L226 Difference]: Without dead ends: 866 [2022-07-19 16:55:54,814 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:55:54,814 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 2026 mSDsluCounter, 2531 mSDsCounter, 0 mSdLazyCounter, 4960 mSolverCounterSat, 717 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2128 SdHoareTripleChecker+Valid, 3386 SdHoareTripleChecker+Invalid, 5677 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 717 IncrementalHoareTripleChecker+Valid, 4960 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:54,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2128 Valid, 3386 Invalid, 5677 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [717 Valid, 4960 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:55:54,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-19 16:55:54,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-07-19 16:55:54,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 528 states, 408 states have (on average 1.6642156862745099) internal successors, (679), 424 states have internal predecessors, (679), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:55:54,865 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 872 transitions. [2022-07-19 16:55:54,865 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 872 transitions. Word has length 88 [2022-07-19 16:55:54,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:54,866 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 872 transitions. [2022-07-19 16:55:54,866 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 16:55:54,866 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 872 transitions. [2022-07-19 16:55:54,868 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-19 16:55:54,868 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:54,870 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 16:55:54,870 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:55:54,870 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:54,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:54,871 INFO L85 PathProgramCache]: Analyzing trace with hash -1623149487, now seen corresponding path program 1 times [2022-07-19 16:55:54,871 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:54,871 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [852663182] [2022-07-19 16:55:54,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:54,871 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:54,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:54,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:54,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:55:55,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:55,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:55,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:55:55,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-19 16:55:55,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-19 16:55:55,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:55:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:55:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:55,120 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 16:55:55,120 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:55,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [852663182] [2022-07-19 16:55:55,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [852663182] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:55,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:55,121 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:55:55,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210263335] [2022-07-19 16:55:55,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:55,121 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:55:55,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:55,122 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:55:55,122 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:55,122 INFO L87 Difference]: Start difference. First operand 528 states and 872 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 16:55:59,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:59,795 INFO L93 Difference]: Finished difference Result 1396 states and 2378 transitions. [2022-07-19 16:55:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:55:59,797 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 16:55:59,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:59,801 INFO L225 Difference]: With dead ends: 1396 [2022-07-19 16:55:59,801 INFO L226 Difference]: Without dead ends: 860 [2022-07-19 16:55:59,803 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 16:55:59,804 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 2071 mSDsluCounter, 2553 mSDsCounter, 0 mSdLazyCounter, 4957 mSolverCounterSat, 722 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2173 SdHoareTripleChecker+Valid, 3436 SdHoareTripleChecker+Invalid, 5679 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 722 IncrementalHoareTripleChecker+Valid, 4957 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:59,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2173 Valid, 3436 Invalid, 5679 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [722 Valid, 4957 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:55:59,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-19 16:55:59,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-07-19 16:55:59,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6567164179104477) internal successors, (666), 418 states have internal predecessors, (666), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:55:59,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 859 transitions. [2022-07-19 16:55:59,857 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 859 transitions. Word has length 89 [2022-07-19 16:55:59,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:59,858 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 859 transitions. [2022-07-19 16:55:59,858 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 16:55:59,858 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 859 transitions. [2022-07-19 16:55:59,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-19 16:55:59,859 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:59,860 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 16:55:59,860 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:55:59,860 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:59,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:59,860 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059270, now seen corresponding path program 1 times [2022-07-19 16:55:59,860 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:59,861 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1641898716] [2022-07-19 16:55:59,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:59,861 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:59,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:59,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:59,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:00,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:00,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:00,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,096 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-19 16:56:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-19 16:56:00,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-19 16:56:00,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-19 16:56:00,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-19 16:56:00,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:00,115 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 16:56:00,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:00,115 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1641898716] [2022-07-19 16:56:00,115 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1641898716] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:00,115 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:00,115 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:56:00,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [450719758] [2022-07-19 16:56:00,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:00,116 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:56:00,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:00,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:56:00,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:56:00,117 INFO L87 Difference]: Start difference. First operand 522 states and 859 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 16:56:04,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:04,755 INFO L93 Difference]: Finished difference Result 1366 states and 2329 transitions. [2022-07-19 16:56:04,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:56:04,756 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 16:56:04,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:04,760 INFO L225 Difference]: With dead ends: 1366 [2022-07-19 16:56:04,760 INFO L226 Difference]: Without dead ends: 860 [2022-07-19 16:56:04,762 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:56:04,762 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 1965 mSDsluCounter, 2677 mSDsCounter, 0 mSdLazyCounter, 4877 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2067 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 5597 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 4877 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:04,763 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2067 Valid, 3551 Invalid, 5597 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 4877 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:56:04,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-19 16:56:04,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-07-19 16:56:04,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.654228855721393) internal successors, (665), 418 states have internal predecessors, (665), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:56:04,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 858 transitions. [2022-07-19 16:56:04,822 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 858 transitions. Word has length 90 [2022-07-19 16:56:04,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:04,823 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 858 transitions. [2022-07-19 16:56:04,823 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 16:56:04,823 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 858 transitions. [2022-07-19 16:56:04,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 16:56:04,824 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:04,825 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 16:56:04,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:56:04,825 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:04,825 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:04,825 INFO L85 PathProgramCache]: Analyzing trace with hash 1106325972, now seen corresponding path program 1 times [2022-07-19 16:56:04,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:04,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239096315] [2022-07-19 16:56:04,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:04,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:04,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:04,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:04,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:05,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:05,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:56:05,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,068 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:56:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,071 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:56:05,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:56:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:56:05,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:05,084 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 16:56:05,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:05,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239096315] [2022-07-19 16:56:05,085 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239096315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:05,085 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:05,085 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:56:05,085 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [650377428] [2022-07-19 16:56:05,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:05,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:56:05,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:05,086 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:56:05,086 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:56:05,086 INFO L87 Difference]: Start difference. First operand 522 states and 858 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 16:56:10,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:10,095 INFO L93 Difference]: Finished difference Result 1387 states and 2351 transitions. [2022-07-19 16:56:10,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:56:10,096 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 16:56:10,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:10,099 INFO L225 Difference]: With dead ends: 1387 [2022-07-19 16:56:10,099 INFO L226 Difference]: Without dead ends: 881 [2022-07-19 16:56:10,101 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:56:10,102 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1473 mSDsluCounter, 2656 mSDsCounter, 0 mSdLazyCounter, 5106 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 3521 SdHoareTripleChecker+Invalid, 5627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 5106 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:10,102 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 3521 Invalid, 5627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 5106 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 16:56:10,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-19 16:56:10,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 527. [2022-07-19 16:56:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 527 states, 407 states have (on average 1.6461916461916462) internal successors, (670), 423 states have internal predecessors, (670), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:56:10,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 863 transitions. [2022-07-19 16:56:10,163 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 863 transitions. Word has length 91 [2022-07-19 16:56:10,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:10,163 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 863 transitions. [2022-07-19 16:56:10,163 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 16:56:10,163 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 863 transitions. [2022-07-19 16:56:10,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-19 16:56:10,165 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:10,165 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 16:56:10,165 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:56:10,165 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:10,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:10,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1537712523, now seen corresponding path program 1 times [2022-07-19 16:56:10,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:10,166 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654751381] [2022-07-19 16:56:10,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:10,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:10,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,349 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:10,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:10,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:10,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-19 16:56:10,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-19 16:56:10,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:56:10,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:56:10,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-19 16:56:10,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:10,438 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 16:56:10,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:10,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654751381] [2022-07-19 16:56:10,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654751381] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:10,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:10,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:56:10,439 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317767929] [2022-07-19 16:56:10,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:10,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:56:10,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:10,440 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:56:10,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:56:10,440 INFO L87 Difference]: Start difference. First operand 527 states and 863 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 16:56:15,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:15,246 INFO L93 Difference]: Finished difference Result 1389 states and 2350 transitions. [2022-07-19 16:56:15,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:56:15,246 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 16:56:15,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:15,250 INFO L225 Difference]: With dead ends: 1389 [2022-07-19 16:56:15,250 INFO L226 Difference]: Without dead ends: 854 [2022-07-19 16:56:15,252 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:56:15,253 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1507 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 5070 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3551 SdHoareTripleChecker+Invalid, 5587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5070 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:15,254 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3551 Invalid, 5587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5070 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 16:56:15,255 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-19 16:56:15,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-07-19 16:56:15,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.643939393939394) internal successors, (651), 412 states have internal predecessors, (651), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:56:15,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 844 transitions. [2022-07-19 16:56:15,318 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 844 transitions. Word has length 91 [2022-07-19 16:56:15,319 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:15,319 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 844 transitions. [2022-07-19 16:56:15,319 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 16:56:15,319 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 844 transitions. [2022-07-19 16:56:15,323 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 16:56:15,323 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:15,323 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 16:56:15,323 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:56:15,324 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:15,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:15,324 INFO L85 PathProgramCache]: Analyzing trace with hash -1696211253, now seen corresponding path program 1 times [2022-07-19 16:56:15,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:15,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849332481] [2022-07-19 16:56:15,324 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:15,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:15,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:15,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,524 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:15,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:15,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:56:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:56:15,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:56:15,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:56:15,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 16:56:15,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:15,589 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 16:56:15,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:15,589 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849332481] [2022-07-19 16:56:15,589 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849332481] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:15,589 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:15,589 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:56:15,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648062323] [2022-07-19 16:56:15,590 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:15,590 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:56:15,590 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:15,590 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:56:15,591 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:56:15,591 INFO L87 Difference]: Start difference. First operand 516 states and 844 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 16:56:20,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:20,573 INFO L93 Difference]: Finished difference Result 1366 states and 2310 transitions. [2022-07-19 16:56:20,573 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:56:20,573 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 16:56:20,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:20,577 INFO L225 Difference]: With dead ends: 1366 [2022-07-19 16:56:20,577 INFO L226 Difference]: Without dead ends: 866 [2022-07-19 16:56:20,579 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:56:20,579 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 970 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 5047 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 5375 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 5047 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:20,579 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3493 Invalid, 5375 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 5047 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 16:56:20,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-19 16:56:20,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 522. [2022-07-19 16:56:20,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 402 states have (on average 1.6343283582089552) internal successors, (657), 418 states have internal predecessors, (657), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:56:20,646 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2022-07-19 16:56:20,647 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 92 [2022-07-19 16:56:20,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:20,647 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2022-07-19 16:56:20,647 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 16:56:20,647 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2022-07-19 16:56:20,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-19 16:56:20,649 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:20,649 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 16:56:20,649 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:56:20,649 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:20,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:20,649 INFO L85 PathProgramCache]: Analyzing trace with hash -435294003, now seen corresponding path program 1 times [2022-07-19 16:56:20,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:20,650 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [621086811] [2022-07-19 16:56:20,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:20,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:20,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:20,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:20,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:20,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:20,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:20,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:56:20,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-19 16:56:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:56:20,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:56:20,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 16:56:20,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:20,970 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 16:56:20,970 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:20,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [621086811] [2022-07-19 16:56:20,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [621086811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:20,970 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:20,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:56:20,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1398116170] [2022-07-19 16:56:20,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:20,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:56:20,971 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:20,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:56:20,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:56:20,973 INFO L87 Difference]: Start difference. First operand 522 states and 850 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 16:56:25,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:25,951 INFO L93 Difference]: Finished difference Result 1369 states and 2311 transitions. [2022-07-19 16:56:25,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-19 16:56:25,951 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 16:56:25,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:25,955 INFO L225 Difference]: With dead ends: 1369 [2022-07-19 16:56:25,955 INFO L226 Difference]: Without dead ends: 854 [2022-07-19 16:56:25,957 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 16:56:25,957 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 972 mSDsluCounter, 2707 mSDsCounter, 0 mSdLazyCounter, 4988 mSolverCounterSat, 328 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1074 SdHoareTripleChecker+Valid, 3554 SdHoareTripleChecker+Invalid, 5316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 328 IncrementalHoareTripleChecker+Valid, 4988 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:25,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1074 Valid, 3554 Invalid, 5316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [328 Valid, 4988 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:56:25,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-19 16:56:26,025 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-07-19 16:56:26,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 516 states, 396 states have (on average 1.6414141414141414) internal successors, (650), 412 states have internal predecessors, (650), 98 states have call successors, (98), 23 states have call predecessors, (98), 21 states have return successors, (95), 93 states have call predecessors, (95), 95 states have call successors, (95) [2022-07-19 16:56:26,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 843 transitions. [2022-07-19 16:56:26,028 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 843 transitions. Word has length 92 [2022-07-19 16:56:26,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:26,028 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 843 transitions. [2022-07-19 16:56:26,029 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 16:56:26,029 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 843 transitions. [2022-07-19 16:56:26,030 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-19 16:56:26,030 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:26,030 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 16:56:26,031 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:56:26,031 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:26,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:26,031 INFO L85 PathProgramCache]: Analyzing trace with hash -397472774, now seen corresponding path program 1 times [2022-07-19 16:56:26,031 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:26,031 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391850317] [2022-07-19 16:56:26,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:26,032 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:26,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:26,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:26,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:26,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:26,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:56:26,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:56:26,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:56:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-19 16:56:26,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:56:26,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:26,310 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 16:56:26,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:26,311 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391850317] [2022-07-19 16:56:26,311 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391850317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:26,311 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:26,311 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-19 16:56:26,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264492279] [2022-07-19 16:56:26,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:26,311 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:56:26,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:26,312 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:56:26,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:56:26,312 INFO L87 Difference]: Start difference. First operand 516 states and 843 transitions. Second operand has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-19 16:56:33,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:33,467 INFO L93 Difference]: Finished difference Result 2067 states and 3541 transitions. [2022-07-19 16:56:33,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:56:33,467 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 93 [2022-07-19 16:56:33,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:33,474 INFO L225 Difference]: With dead ends: 2067 [2022-07-19 16:56:33,475 INFO L226 Difference]: Without dead ends: 1569 [2022-07-19 16:56:33,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:56:33,478 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 4302 mSDsluCounter, 1657 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 1934 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4406 SdHoareTripleChecker+Valid, 2575 SdHoareTripleChecker+Invalid, 5940 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1934 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:33,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4406 Valid, 2575 Invalid, 5940 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1934 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 6.1s Time] [2022-07-19 16:56:33,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-07-19 16:56:33,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 963. [2022-07-19 16:56:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 963 states, 742 states have (on average 1.6037735849056605) internal successors, (1190), 772 states have internal predecessors, (1190), 180 states have call successors, (180), 43 states have call predecessors, (180), 40 states have return successors, (181), 172 states have call predecessors, (181), 176 states have call successors, (181) [2022-07-19 16:56:33,654 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1551 transitions. [2022-07-19 16:56:33,654 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1551 transitions. Word has length 93 [2022-07-19 16:56:33,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:33,654 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1551 transitions. [2022-07-19 16:56:33,654 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.625) internal successors, (69), 5 states have internal predecessors, (69), 4 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-19 16:56:33,655 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1551 transitions. [2022-07-19 16:56:33,656 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 16:56:33,656 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:33,656 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] [2022-07-19 16:56:33,657 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:56:33,657 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:33,657 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:33,657 INFO L85 PathProgramCache]: Analyzing trace with hash 204066973, now seen corresponding path program 1 times [2022-07-19 16:56:33,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:33,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625945170] [2022-07-19 16:56:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:33,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:33,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:33,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:33,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:33,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:33,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:33,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:56:33,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:56:33,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:56:33,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:33,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:56:33,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 16:56:33,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:33,927 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 16:56:33,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625945170] [2022-07-19 16:56:33,928 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625945170] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:56:33,928 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [32813506] [2022-07-19 16:56:33,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:33,928 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:56:33,928 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:56:33,930 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 16:56:33,931 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 16:56:34,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:34,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 16:56:34,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:56:34,245 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 16:56:34,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:56:34,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [32813506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:34,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:56:34,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-19 16:56:34,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440189762] [2022-07-19 16:56:34,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:34,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:56:34,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:34,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:56:34,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:56:34,246 INFO L87 Difference]: Start difference. First operand 963 states and 1551 transitions. Second operand has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 16:56:34,615 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:34,615 INFO L93 Difference]: Finished difference Result 2763 states and 4519 transitions. [2022-07-19 16:56:34,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:56:34,616 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 98 [2022-07-19 16:56:34,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:34,622 INFO L225 Difference]: With dead ends: 2763 [2022-07-19 16:56:34,622 INFO L226 Difference]: Without dead ends: 1818 [2022-07-19 16:56:34,625 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 117 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:56:34,625 INFO L413 NwaCegarLoop]: 977 mSDtfsCounter, 784 mSDsluCounter, 741 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 784 SdHoareTripleChecker+Valid, 1718 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 16:56:34,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [784 Valid, 1718 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:56:34,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-07-19 16:56:34,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1757. [2022-07-19 16:56:34,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1757 states, 1362 states have (on average 1.6240822320117474) internal successors, (2212), 1422 states have internal predecessors, (2212), 319 states have call successors, (319), 76 states have call predecessors, (319), 75 states have return successors, (334), 308 states have call predecessors, (334), 315 states have call successors, (334) [2022-07-19 16:56:34,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2865 transitions. [2022-07-19 16:56:34,905 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2865 transitions. Word has length 98 [2022-07-19 16:56:34,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:34,905 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2865 transitions. [2022-07-19 16:56:34,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 24.666666666666668) internal successors, (74), 3 states have internal predecessors, (74), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 16:56:34,906 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2865 transitions. [2022-07-19 16:56:34,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 16:56:34,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:34,908 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] [2022-07-19 16:56:34,927 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:56:35,123 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,SelfDestructingSolverStorable12 [2022-07-19 16:56:35,124 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:35,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:35,124 INFO L85 PathProgramCache]: Analyzing trace with hash 1363197387, now seen corresponding path program 1 times [2022-07-19 16:56:35,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:35,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254464723] [2022-07-19 16:56:35,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:35,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:35,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:35,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:35,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:56:35,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-19 16:56:35,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-19 16:56:35,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:35,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:56:35,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:56:35,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,429 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 16:56:35,429 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:35,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254464723] [2022-07-19 16:56:35,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254464723] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:56:35,430 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1969712555] [2022-07-19 16:56:35,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:35,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:56:35,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:56:35,431 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 16:56:35,432 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 16:56:35,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:35,651 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 16:56:35,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:56:35,712 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 16:56:35,712 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:56:35,713 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1969712555] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:35,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:56:35,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-19 16:56:35,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1333549019] [2022-07-19 16:56:35,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:35,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 16:56:35,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:35,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 16:56:35,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:56:35,716 INFO L87 Difference]: Start difference. First operand 1757 states and 2865 transitions. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 16:56:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:36,081 INFO L93 Difference]: Finished difference Result 3935 states and 6456 transitions. [2022-07-19 16:56:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 16:56:36,082 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 99 [2022-07-19 16:56:36,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:36,091 INFO L225 Difference]: With dead ends: 3935 [2022-07-19 16:56:36,091 INFO L226 Difference]: Without dead ends: 2196 [2022-07-19 16:56:36,098 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:56:36,099 INFO L413 NwaCegarLoop]: 919 mSDtfsCounter, 782 mSDsluCounter, 738 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 782 SdHoareTripleChecker+Valid, 1657 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 16:56:36,099 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [782 Valid, 1657 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-19 16:56:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-07-19 16:56:36,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2149. [2022-07-19 16:56:36,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1669 states have (on average 1.6369083283403236) internal successors, (2732), 1744 states have internal predecessors, (2732), 388 states have call successors, (388), 91 states have call predecessors, (388), 91 states have return successors, (407), 376 states have call predecessors, (407), 384 states have call successors, (407) [2022-07-19 16:56:36,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3527 transitions. [2022-07-19 16:56:36,488 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3527 transitions. Word has length 99 [2022-07-19 16:56:36,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:36,488 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3527 transitions. [2022-07-19 16:56:36,489 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2022-07-19 16:56:36,489 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3527 transitions. [2022-07-19 16:56:36,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 16:56:36,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:36,491 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] [2022-07-19 16:56:36,509 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 16:56:36,709 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,SelfDestructingSolverStorable13 [2022-07-19 16:56:36,709 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:36,710 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:36,710 INFO L85 PathProgramCache]: Analyzing trace with hash 1972797999, now seen corresponding path program 1 times [2022-07-19 16:56:36,710 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:36,710 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [753290227] [2022-07-19 16:56:36,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:36,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:36,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:36,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:36,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:36,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:36,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:36,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:56:36,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:56:36,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:56:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:56:36,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:36,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-19 16:56:36,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 16:56:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:36,953 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 16:56:36,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:36,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [753290227] [2022-07-19 16:56:36,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [753290227] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:36,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:36,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:56:36,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [179208985] [2022-07-19 16:56:36,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:36,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:56:36,954 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:36,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:56:36,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:56:36,955 INFO L87 Difference]: Start difference. First operand 2149 states and 3527 transitions. Second operand has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:56:51,851 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:51,851 INFO L93 Difference]: Finished difference Result 11101 states and 20444 transitions. [2022-07-19 16:56:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 16:56:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-07-19 16:56:51,852 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:51,906 INFO L225 Difference]: With dead ends: 11101 [2022-07-19 16:56:51,906 INFO L226 Difference]: Without dead ends: 8970 [2022-07-19 16:56:51,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:56:51,922 INFO L413 NwaCegarLoop]: 1121 mSDtfsCounter, 4774 mSDsluCounter, 2759 mSDsCounter, 0 mSdLazyCounter, 7978 mSolverCounterSat, 2848 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4883 SdHoareTripleChecker+Valid, 3880 SdHoareTripleChecker+Invalid, 10826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2848 IncrementalHoareTripleChecker+Valid, 7978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:51,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4883 Valid, 3880 Invalid, 10826 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2848 Valid, 7978 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-07-19 16:56:51,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2022-07-19 16:56:53,262 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 5277. [2022-07-19 16:56:53,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5277 states, 3865 states have (on average 1.6116429495472187) internal successors, (6229), 4170 states have internal predecessors, (6229), 1172 states have call successors, (1172), 176 states have call predecessors, (1172), 239 states have return successors, (1944), 1166 states have call predecessors, (1944), 1166 states have call successors, (1944) [2022-07-19 16:56:53,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 9345 transitions. [2022-07-19 16:56:53,297 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 9345 transitions. Word has length 101 [2022-07-19 16:56:53,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:53,297 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 9345 transitions. [2022-07-19 16:56:53,298 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.11111111111111) internal successors, (73), 5 states have internal predecessors, (73), 3 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:56:53,298 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 9345 transitions. [2022-07-19 16:56:53,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 16:56:53,300 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:53,300 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 16:56:53,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:56:53,301 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:53,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:53,301 INFO L85 PathProgramCache]: Analyzing trace with hash -226788623, now seen corresponding path program 1 times [2022-07-19 16:56:53,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:53,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286066428] [2022-07-19 16:56:53,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:53,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:53,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:53,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:56:53,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:53,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:56:53,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:56:53,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:56:53,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-19 16:56:53,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-19 16:56:53,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:53,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-19 16:56:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:56:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:53,515 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 16:56:53,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:53,515 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286066428] [2022-07-19 16:56:53,515 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286066428] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:53,516 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:53,516 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:56:53,516 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139870365] [2022-07-19 16:56:53,516 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:53,516 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:56:53,517 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:53,517 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:56:53,517 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:56:53,517 INFO L87 Difference]: Start difference. First operand 5277 states and 9345 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 16:56:58,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:58,956 INFO L93 Difference]: Finished difference Result 11995 states and 21665 transitions. [2022-07-19 16:56:58,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:56:58,957 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 16:56:58,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:58,999 INFO L225 Difference]: With dead ends: 11995 [2022-07-19 16:56:58,999 INFO L226 Difference]: Without dead ends: 6736 [2022-07-19 16:56:59,031 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:56:59,031 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 1453 mSDsluCounter, 1234 mSDsCounter, 0 mSdLazyCounter, 2458 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2458 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:59,032 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 2113 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2458 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:56:59,036 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2022-07-19 16:57:00,392 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 5285. [2022-07-19 16:57:00,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5285 states, 3871 states have (on average 1.6101782485145957) internal successors, (6233), 4176 states have internal predecessors, (6233), 1172 states have call successors, (1172), 180 states have call predecessors, (1172), 241 states have return successors, (1932), 1164 states have call predecessors, (1932), 1166 states have call successors, (1932) [2022-07-19 16:57:00,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 9337 transitions. [2022-07-19 16:57:00,430 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 9337 transitions. Word has length 102 [2022-07-19 16:57:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:00,431 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 9337 transitions. [2022-07-19 16:57:00,431 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 16:57:00,431 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 9337 transitions. [2022-07-19 16:57:00,434 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-19 16:57:00,434 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:00,434 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 16:57:00,434 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:57:00,434 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:00,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:00,435 INFO L85 PathProgramCache]: Analyzing trace with hash -468332789, now seen corresponding path program 1 times [2022-07-19 16:57:00,435 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:00,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [636948945] [2022-07-19 16:57:00,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:00,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:00,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:00,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:00,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:57:00,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:00,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:57:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:57:00,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:57:00,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:57:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:57:00,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:00,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 16:57:00,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-19 16:57:00,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,700 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 16:57:00,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:00,700 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [636948945] [2022-07-19 16:57:00,700 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [636948945] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:00,700 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:00,700 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:57:00,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809824715] [2022-07-19 16:57:00,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:00,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:57:00,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:00,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:57:00,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:57:00,702 INFO L87 Difference]: Start difference. First operand 5285 states and 9337 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 16:57:20,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:20,868 INFO L93 Difference]: Finished difference Result 23187 states and 44894 transitions. [2022-07-19 16:57:20,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 16:57:20,869 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 16:57:20,869 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:20,979 INFO L225 Difference]: With dead ends: 23187 [2022-07-19 16:57:20,980 INFO L226 Difference]: Without dead ends: 17920 [2022-07-19 16:57:21,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:57:21,021 INFO L413 NwaCegarLoop]: 1246 mSDtfsCounter, 3731 mSDsluCounter, 3290 mSDsCounter, 0 mSdLazyCounter, 8400 mSolverCounterSat, 2403 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 4536 SdHoareTripleChecker+Invalid, 10803 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2403 IncrementalHoareTripleChecker+Valid, 8400 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:21,021 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 4536 Invalid, 10803 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2403 Valid, 8400 Invalid, 0 Unknown, 0 Unchecked, 12.5s Time] [2022-07-19 16:57:21,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2022-07-19 16:57:24,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 10527. [2022-07-19 16:57:24,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10527 states, 7716 states have (on average 1.6065318818040435) internal successors, (12396), 8321 states have internal predecessors, (12396), 2323 states have call successors, (2323), 354 states have call predecessors, (2323), 487 states have return successors, (4267), 2317 states have call predecessors, (4267), 2313 states have call successors, (4267) [2022-07-19 16:57:24,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 18986 transitions. [2022-07-19 16:57:24,159 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 18986 transitions. Word has length 110 [2022-07-19 16:57:24,160 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:24,160 INFO L495 AbstractCegarLoop]: Abstraction has 10527 states and 18986 transitions. [2022-07-19 16:57:24,161 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 16:57:24,161 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 18986 transitions. [2022-07-19 16:57:24,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-19 16:57:24,164 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:24,164 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 16:57:24,164 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:57:24,164 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:24,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:24,165 INFO L85 PathProgramCache]: Analyzing trace with hash 1224110669, now seen corresponding path program 1 times [2022-07-19 16:57:24,165 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:24,165 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936027125] [2022-07-19 16:57:24,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:24,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:24,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:24,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:57:24,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:24,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,385 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:57:24,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,386 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:57:24,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,387 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:57:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-19 16:57:24,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:57:24,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:24,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-19 16:57:24,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 16:57:24,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:24,415 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 16:57:24,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:24,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1936027125] [2022-07-19 16:57:24,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1936027125] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:24,415 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:24,415 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:57:24,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232005825] [2022-07-19 16:57:24,416 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:24,416 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:57:24,416 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:24,416 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:57:24,417 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:57:24,417 INFO L87 Difference]: Start difference. First operand 10527 states and 18986 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 16:57:32,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:32,056 INFO L93 Difference]: Finished difference Result 23795 states and 44531 transitions. [2022-07-19 16:57:32,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:57:32,057 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 16:57:32,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:32,128 INFO L225 Difference]: With dead ends: 23795 [2022-07-19 16:57:32,128 INFO L226 Difference]: Without dead ends: 13286 [2022-07-19 16:57:32,213 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:57:32,214 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 1920 mSDsluCounter, 1177 mSDsCounter, 0 mSdLazyCounter, 2436 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2024 SdHoareTripleChecker+Valid, 2044 SdHoareTripleChecker+Invalid, 3126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 2436 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:32,214 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2024 Valid, 2044 Invalid, 3126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [690 Valid, 2436 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:57:32,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13286 states. [2022-07-19 16:57:35,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13286 to 10567. [2022-07-19 16:57:35,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10567 states, 7752 states have (on average 1.6042311661506707) internal successors, (12436), 8349 states have internal predecessors, (12436), 2323 states have call successors, (2323), 370 states have call predecessors, (2323), 491 states have return successors, (4249), 2313 states have call predecessors, (4249), 2313 states have call successors, (4249) [2022-07-19 16:57:35,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 19008 transitions. [2022-07-19 16:57:35,261 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 19008 transitions. Word has length 111 [2022-07-19 16:57:35,262 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:35,262 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 19008 transitions. [2022-07-19 16:57:35,262 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 16:57:35,262 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 19008 transitions. [2022-07-19 16:57:35,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-19 16:57:35,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:35,266 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 16:57:35,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 16:57:35,266 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:35,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:35,266 INFO L85 PathProgramCache]: Analyzing trace with hash -902491661, now seen corresponding path program 1 times [2022-07-19 16:57:35,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:35,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159160699] [2022-07-19 16:57:35,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:35,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:35,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:35,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:35,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:57:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:35,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:35,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:57:35,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:57:35,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:57:35,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:57:35,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:57:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-19 16:57:35,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:35,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-19 16:57:35,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-19 16:57:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,526 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 16:57:35,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:35,526 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159160699] [2022-07-19 16:57:35,526 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [159160699] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:35,526 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:35,527 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:57:35,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140458078] [2022-07-19 16:57:35,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:35,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:57:35,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:35,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:57:35,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:57:35,528 INFO L87 Difference]: Start difference. First operand 10567 states and 19008 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) [2022-07-19 16:58:02,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:58:02,935 INFO L93 Difference]: Finished difference Result 46361 states and 95562 transitions. [2022-07-19 16:58:02,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 16:58:02,936 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 120 [2022-07-19 16:58:02,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:58:03,223 INFO L225 Difference]: With dead ends: 46361 [2022-07-19 16:58:03,223 INFO L226 Difference]: Without dead ends: 35812 [2022-07-19 16:58:03,329 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:58:03,330 INFO L413 NwaCegarLoop]: 1200 mSDtfsCounter, 3780 mSDsluCounter, 3053 mSDsCounter, 0 mSdLazyCounter, 8387 mSolverCounterSat, 2426 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3890 SdHoareTripleChecker+Valid, 4253 SdHoareTripleChecker+Invalid, 10813 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2426 IncrementalHoareTripleChecker+Valid, 8387 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:58:03,330 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3890 Valid, 4253 Invalid, 10813 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2426 Valid, 8387 Invalid, 0 Unknown, 0 Unchecked, 12.3s Time] [2022-07-19 16:58:03,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35812 states. [2022-07-19 16:58:09,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35812 to 21127. [2022-07-19 16:58:09,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21127 states, 15505 states have (on average 1.600967429861335) internal successors, (24823), 16694 states have internal predecessors, (24823), 4630 states have call successors, (4630), 734 states have call predecessors, (4630), 991 states have return successors, (9610), 4624 states have call predecessors, (9610), 4612 states have call successors, (9610) [2022-07-19 16:58:09,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 39063 transitions. [2022-07-19 16:58:09,980 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 39063 transitions. Word has length 120 [2022-07-19 16:58:09,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:58:09,981 INFO L495 AbstractCegarLoop]: Abstraction has 21127 states and 39063 transitions. [2022-07-19 16:58:09,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-19 16:58:09,981 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 39063 transitions. [2022-07-19 16:58:09,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-19 16:58:09,984 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:58:09,985 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, 1] [2022-07-19 16:58:09,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 16:58:09,985 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:58:09,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:58:09,985 INFO L85 PathProgramCache]: Analyzing trace with hash 466629917, now seen corresponding path program 1 times [2022-07-19 16:58:09,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:58:09,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [368862056] [2022-07-19 16:58:09,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:58:09,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:58:10,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:58:10,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:58:10,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:10,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:58:10,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:58:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:58:10,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:58:10,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:58:10,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-19 16:58:10,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:58:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-19 16:58:10,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-19 16:58:10,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:10,224 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:58:10,225 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:58:10,225 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [368862056] [2022-07-19 16:58:10,225 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [368862056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:58:10,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:58:10,226 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:58:10,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175320676] [2022-07-19 16:58:10,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:58:10,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:58:10,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:58:10,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:58:10,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:58:10,227 INFO L87 Difference]: Start difference. First operand 21127 states and 39063 transitions. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 16:58:23,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:58:23,490 INFO L93 Difference]: Finished difference Result 47635 states and 94243 transitions. [2022-07-19 16:58:23,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:58:23,490 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 121 [2022-07-19 16:58:23,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:58:23,686 INFO L225 Difference]: With dead ends: 47635 [2022-07-19 16:58:23,686 INFO L226 Difference]: Without dead ends: 26526 [2022-07-19 16:58:23,922 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:58:23,922 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 988 mSDsluCounter, 1264 mSDsCounter, 0 mSdLazyCounter, 2635 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1091 SdHoareTripleChecker+Valid, 2129 SdHoareTripleChecker+Invalid, 2961 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 2635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:58:23,922 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1091 Valid, 2129 Invalid, 2961 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 2635 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:58:23,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26526 states. [2022-07-19 16:58:30,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26526 to 21207. [2022-07-19 16:58:30,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21207 states, 15577 states have (on average 1.5987032162804133) internal successors, (24903), 16766 states have internal predecessors, (24903), 4630 states have call successors, (4630), 750 states have call predecessors, (4630), 999 states have return successors, (9586), 4616 states have call predecessors, (9586), 4612 states have call successors, (9586) [2022-07-19 16:58:30,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 39119 transitions. [2022-07-19 16:58:30,395 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 39119 transitions. Word has length 121 [2022-07-19 16:58:30,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:58:30,396 INFO L495 AbstractCegarLoop]: Abstraction has 21207 states and 39119 transitions. [2022-07-19 16:58:30,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 4 states have internal predecessors, (87), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-19 16:58:30,396 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 39119 transitions. [2022-07-19 16:58:30,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:58:30,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:58:30,401 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1] [2022-07-19 16:58:30,401 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 16:58:30,401 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:58:30,401 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:58:30,401 INFO L85 PathProgramCache]: Analyzing trace with hash -1042938137, now seen corresponding path program 1 times [2022-07-19 16:58:30,402 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:58:30,402 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586283452] [2022-07-19 16:58:30,402 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:58:30,402 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:58:30,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:58:30,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:30,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-19 16:58:30,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,632 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:30,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:58:30,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:58:30,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:58:30,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:58:30,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,639 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:58:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-19 16:58:30,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-19 16:58:30,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-19 16:58:30,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:30,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-19 16:58:30,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-19 16:58:30,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:30,675 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:58:30,675 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:58:30,675 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586283452] [2022-07-19 16:58:30,675 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586283452] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:58:30,676 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:58:30,676 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:58:30,677 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [173166814] [2022-07-19 16:58:30,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:58:30,678 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:58:30,678 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:58:30,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:58:30,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:58:30,679 INFO L87 Difference]: Start difference. First operand 21207 states and 39119 transitions. Second operand has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-19 16:59:12,765 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:59:12,765 INFO L93 Difference]: Finished difference Result 88249 states and 198389 transitions. [2022-07-19 16:59:12,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-19 16:59:12,766 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.88888888888889) internal successors, (89), 5 states have internal predecessors, (89), 3 states have call successors, (17), 6 states have call predecessors, (17), 3 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 131 [2022-07-19 16:59:12,766 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:59:13,733 INFO L225 Difference]: With dead ends: 88249 [2022-07-19 16:59:13,733 INFO L226 Difference]: Without dead ends: 67060 [2022-07-19 16:59:13,949 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:59:13,949 INFO L413 NwaCegarLoop]: 1228 mSDtfsCounter, 2797 mSDsluCounter, 3236 mSDsCounter, 0 mSdLazyCounter, 8654 mSolverCounterSat, 2008 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2908 SdHoareTripleChecker+Valid, 4464 SdHoareTripleChecker+Invalid, 10662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2008 IncrementalHoareTripleChecker+Valid, 8654 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:59:13,949 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2908 Valid, 4464 Invalid, 10662 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2008 Valid, 8654 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-07-19 16:59:13,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67060 states.