./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 6c24879c 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-?-6c24879 [2022-07-12 05:47:58,207 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:47:58,209 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:47:58,253 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:47:58,254 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:47:58,255 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:47:58,256 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:47:58,257 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:47:58,258 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:47:58,258 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:47:58,259 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:47:58,260 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:47:58,261 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:47:58,263 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:47:58,264 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:47:58,266 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:47:58,266 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:47:58,269 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:47:58,270 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:47:58,271 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:47:58,276 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:47:58,277 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:47:58,278 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:47:58,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:47:58,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:47:58,280 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:47:58,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:47:58,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:47:58,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:47:58,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:47:58,287 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:47:58,287 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:47:58,288 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:47:58,288 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:47:58,289 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:47:58,290 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:47:58,290 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:47:58,291 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:47:58,292 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:47:58,292 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:47:58,292 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:47:58,293 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:47:58,294 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:47:58,312 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:47:58,314 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:47:58,314 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:47:58,314 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:47:58,315 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:47:58,315 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:47:58,316 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:47:58,316 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:47:58,316 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:47:58,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:47:58,317 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:47:58,318 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:47:58,319 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:47:58,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:47:58,319 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:47:58,319 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:47:58,319 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:47:58,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:47:58,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:47:58,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:47:58,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:47:58,320 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:47:58,320 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:47:58,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:47:58,321 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:47:58,321 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:47:58,321 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:47:58,321 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 67b10dcf95f436cfd8f02a55d7d1d272656f1382a4eb6ab4ad3bba992e95e024 [2022-07-12 05:47:58,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:47:58,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:47:58,496 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:47:58,497 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:47:58,497 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:47:58,498 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-07-12 05:47:58,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5607b1746/01c5cd0b7606487cbd5a0b5c9382ba3d/FLAG28d19d82f [2022-07-12 05:47:58,939 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:47:58,940 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product09.cil.c [2022-07-12 05:47:58,968 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5607b1746/01c5cd0b7606487cbd5a0b5c9382ba3d/FLAG28d19d82f [2022-07-12 05:47:59,295 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5607b1746/01c5cd0b7606487cbd5a0b5c9382ba3d [2022-07-12 05:47:59,297 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:47:59,298 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:47:59,301 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:47:59,301 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:47:59,303 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:47:59,303 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,304 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21f95d2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59, skipping insertion in model container [2022-07-12 05:47:59,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:47:59,354 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:47:59,602 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] [2022-07-12 05:47:59,728 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:47:59,734 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:47:59,763 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] [2022-07-12 05:47:59,806 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:47:59,824 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:47:59,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59 WrapperNode [2022-07-12 05:47:59,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:47:59,826 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:47:59,826 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:47:59,826 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:47:59,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,888 INFO L137 Inliner]: procedures = 87, calls = 336, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 808 [2022-07-12 05:47:59,888 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:47:59,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:47:59,889 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:47:59,889 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:47:59,894 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,894 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,911 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,919 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,948 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:47:59,949 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:47:59,949 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:47:59,949 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:47:59,950 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (1/1) ... [2022-07-12 05:47:59,955 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:47:59,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:48:00,000 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) [2022-07-12 05:48:00,006 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 [2022-07-12 05:48:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:48:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-12 05:48:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-12 05:48:00,034 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:48:00,034 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:48:00,035 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:48:00,035 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:48:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-12 05:48:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-12 05:48:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:48:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:48:00,036 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:48:00,036 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:48:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:48:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:48:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:48:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:48:00,037 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:48:00,037 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:48:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:48:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:48:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:48:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:48:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-12 05:48:00,054 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-12 05:48:00,054 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:48:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:48:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-12 05:48:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-12 05:48:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:48:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:48:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:48:00,055 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:48:00,055 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:48:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:48:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:48:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:48:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:48:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-12 05:48:00,056 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-12 05:48:00,056 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:48:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:48:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:48:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:48:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:48:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:48:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:48:00,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:48:00,057 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:48:00,058 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:48:00,167 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:48:00,169 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:48:00,893 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:48:00,905 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:48:00,906 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:48:00,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:48:00 BoogieIcfgContainer [2022-07-12 05:48:00,908 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:48:00,910 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:48:00,910 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:48:00,913 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:48:00,913 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:47:59" (1/3) ... [2022-07-12 05:48:00,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9f10eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:48:00, skipping insertion in model container [2022-07-12 05:48:00,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:47:59" (2/3) ... [2022-07-12 05:48:00,914 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1f9f10eb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:48:00, skipping insertion in model container [2022-07-12 05:48:00,914 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:48:00" (3/3) ... [2022-07-12 05:48:00,915 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product09.cil.c [2022-07-12 05:48:00,924 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:48:00,924 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:48:00,978 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:48:01,016 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@31c550e3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@51db495d [2022-07-12 05:48:01,017 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:48:01,024 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) [2022-07-12 05:48:01,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-12 05:48:01,056 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:01,057 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] [2022-07-12 05:48:01,057 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:01,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:01,061 INFO L85 PathProgramCache]: Analyzing trace with hash 1881157288, now seen corresponding path program 1 times [2022-07-12 05:48:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:01,068 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295046946] [2022-07-12 05:48:01,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:01,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:01,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:01,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:01,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:01,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:01,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:48:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-12 05:48:01,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:48:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:48:01,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:48:01,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:01,714 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:01,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:01,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295046946] [2022-07-12 05:48:01,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295046946] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:01,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:01,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:01,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [410626050] [2022-07-12 05:48:01,717 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:01,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:01,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:01,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:01,767 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) [2022-07-12 05:48:06,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:06,965 INFO L93 Difference]: Finished difference Result 1464 states and 2552 transitions. [2022-07-12 05:48:06,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:06,967 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 [2022-07-12 05:48:06,968 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:06,990 INFO L225 Difference]: With dead ends: 1464 [2022-07-12 05:48:06,991 INFO L226 Difference]: Without dead ends: 909 [2022-07-12 05:48:06,999 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 [2022-07-12 05:48:07,003 INFO L413 NwaCegarLoop]: 946 mSDtfsCounter, 1700 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 5262 mSolverCounterSat, 533 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1803 SdHoareTripleChecker+Valid, 3665 SdHoareTripleChecker+Invalid, 5795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 533 IncrementalHoareTripleChecker+Valid, 5262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:07,008 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1803 Valid, 3665 Invalid, 5795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [533 Valid, 5262 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 05:48:07,021 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 909 states. [2022-07-12 05:48:07,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 909 to 558. [2022-07-12 05:48:07,137 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) [2022-07-12 05:48:07,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 930 transitions. [2022-07-12 05:48:07,144 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 930 transitions. Word has length 85 [2022-07-12 05:48:07,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:07,145 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 930 transitions. [2022-07-12 05:48:07,146 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) [2022-07-12 05:48:07,146 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 930 transitions. [2022-07-12 05:48:07,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 05:48:07,156 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:07,156 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] [2022-07-12 05:48:07,157 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 05:48:07,157 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:07,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:07,158 INFO L85 PathProgramCache]: Analyzing trace with hash 782189340, now seen corresponding path program 1 times [2022-07-12 05:48:07,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:07,158 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693420948] [2022-07-12 05:48:07,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:07,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,390 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:07,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:07,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,438 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:07,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:48:07,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:48:07,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:48:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:48:07,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 05:48:07,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:07,495 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:07,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:07,496 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693420948] [2022-07-12 05:48:07,496 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693420948] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:07,496 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:07,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:07,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916616802] [2022-07-12 05:48:07,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:07,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:07,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:07,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:07,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:07,499 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) [2022-07-12 05:48:13,168 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:13,168 INFO L93 Difference]: Finished difference Result 1454 states and 2498 transitions. [2022-07-12 05:48:13,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:48:13,169 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 [2022-07-12 05:48:13,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:13,176 INFO L225 Difference]: With dead ends: 1454 [2022-07-12 05:48:13,177 INFO L226 Difference]: Without dead ends: 912 [2022-07-12 05:48:13,179 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:48:13,180 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 1113 mSDsluCounter, 2585 mSDsCounter, 0 mSdLazyCounter, 5572 mSolverCounterSat, 330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1216 SdHoareTripleChecker+Valid, 3477 SdHoareTripleChecker+Invalid, 5902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 330 IncrementalHoareTripleChecker+Valid, 5572 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:13,180 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1216 Valid, 3477 Invalid, 5902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [330 Valid, 5572 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-07-12 05:48:13,181 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 912 states. [2022-07-12 05:48:13,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 912 to 558. [2022-07-12 05:48:13,223 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) [2022-07-12 05:48:13,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 929 transitions. [2022-07-12 05:48:13,226 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 929 transitions. Word has length 86 [2022-07-12 05:48:13,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:13,227 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 929 transitions. [2022-07-12 05:48:13,227 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) [2022-07-12 05:48:13,227 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 929 transitions. [2022-07-12 05:48:13,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-12 05:48:13,229 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:13,229 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] [2022-07-12 05:48:13,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 05:48:13,229 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:13,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:13,230 INFO L85 PathProgramCache]: Analyzing trace with hash 1830753775, now seen corresponding path program 1 times [2022-07-12 05:48:13,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:13,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113006560] [2022-07-12 05:48:13,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:13,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:13,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:13,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:13,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:13,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:13,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:48:13,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:48:13,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-12 05:48:13,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:48:13,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-12 05:48:13,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-12 05:48:13,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:13,506 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:13,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:13,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113006560] [2022-07-12 05:48:13,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113006560] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:13,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:13,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:48:13,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944145233] [2022-07-12 05:48:13,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:13,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:48:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:13,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:48:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:48:13,508 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) [2022-07-12 05:48:17,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:17,298 INFO L93 Difference]: Finished difference Result 1445 states and 2478 transitions. [2022-07-12 05:48:17,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:48:17,299 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 [2022-07-12 05:48:17,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:17,303 INFO L225 Difference]: With dead ends: 1445 [2022-07-12 05:48:17,303 INFO L226 Difference]: Without dead ends: 872 [2022-07-12 05:48:17,306 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:17,306 INFO L413 NwaCegarLoop]: 931 mSDtfsCounter, 2060 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2586 mSolverCounterSat, 715 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 2122 SdHoareTripleChecker+Invalid, 3301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 715 IncrementalHoareTripleChecker+Valid, 2586 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:17,307 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 2122 Invalid, 3301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [715 Valid, 2586 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-12 05:48:17,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 872 states. [2022-07-12 05:48:17,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 872 to 534. [2022-07-12 05:48:17,348 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) [2022-07-12 05:48:17,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 534 states to 534 states and 886 transitions. [2022-07-12 05:48:17,352 INFO L78 Accepts]: Start accepts. Automaton has 534 states and 886 transitions. Word has length 86 [2022-07-12 05:48:17,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:17,353 INFO L495 AbstractCegarLoop]: Abstraction has 534 states and 886 transitions. [2022-07-12 05:48:17,353 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) [2022-07-12 05:48:17,353 INFO L276 IsEmpty]: Start isEmpty. Operand 534 states and 886 transitions. [2022-07-12 05:48:17,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-12 05:48:17,354 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:17,355 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] [2022-07-12 05:48:17,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 05:48:17,355 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:17,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:17,355 INFO L85 PathProgramCache]: Analyzing trace with hash 273510260, now seen corresponding path program 1 times [2022-07-12 05:48:17,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:17,356 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501780605] [2022-07-12 05:48:17,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:17,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:17,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:17,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:17,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:17,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:17,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:17,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:48:17,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-12 05:48:17,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:48:17,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:48:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-12 05:48:17,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:17,655 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:17,655 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:17,655 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501780605] [2022-07-12 05:48:17,655 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501780605] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:17,655 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:17,656 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:17,656 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2136476107] [2022-07-12 05:48:17,656 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:17,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:17,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:17,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:17,657 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:17,657 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) [2022-07-12 05:48:22,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:22,657 INFO L93 Difference]: Finished difference Result 1408 states and 2409 transitions. [2022-07-12 05:48:22,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:22,658 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 [2022-07-12 05:48:22,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:22,662 INFO L225 Difference]: With dead ends: 1408 [2022-07-12 05:48:22,662 INFO L226 Difference]: Without dead ends: 866 [2022-07-12 05:48:22,665 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 [2022-07-12 05:48:22,665 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 2109 mSDsluCounter, 2476 mSDsCounter, 0 mSdLazyCounter, 5057 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2211 SdHoareTripleChecker+Valid, 3359 SdHoareTripleChecker+Invalid, 5775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 5057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:22,666 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2211 Valid, 3359 Invalid, 5775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 5057 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-12 05:48:22,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-12 05:48:22,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-07-12 05:48:22,741 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) [2022-07-12 05:48:22,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 873 transitions. [2022-07-12 05:48:22,744 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 873 transitions. Word has length 87 [2022-07-12 05:48:22,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:22,745 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 873 transitions. [2022-07-12 05:48:22,745 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) [2022-07-12 05:48:22,745 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 873 transitions. [2022-07-12 05:48:22,746 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-12 05:48:22,746 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:22,746 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] [2022-07-12 05:48:22,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 05:48:22,747 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:22,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:22,747 INFO L85 PathProgramCache]: Analyzing trace with hash 65130564, now seen corresponding path program 1 times [2022-07-12 05:48:22,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:22,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53668386] [2022-07-12 05:48:22,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:22,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:22,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:22,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:22,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:22,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:22,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:22,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:22,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:22,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:22,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:22,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:22,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:48:23,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:48:23,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:48:23,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:48:23,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:48:23,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:23,029 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:23,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:23,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53668386] [2022-07-12 05:48:23,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53668386] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:23,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:23,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:23,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677090501] [2022-07-12 05:48:23,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:23,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:23,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:23,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:23,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:23,033 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) [2022-07-12 05:48:27,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:27,718 INFO L93 Difference]: Finished difference Result 1378 states and 2358 transitions. [2022-07-12 05:48:27,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:27,719 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 [2022-07-12 05:48:27,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:27,725 INFO L225 Difference]: With dead ends: 1378 [2022-07-12 05:48:27,725 INFO L226 Difference]: Without dead ends: 866 [2022-07-12 05:48:27,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:48:27,728 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 2012 mSDsluCounter, 2622 mSDsCounter, 0 mSdLazyCounter, 4954 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2114 SdHoareTripleChecker+Valid, 3495 SdHoareTripleChecker+Invalid, 5672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 4954 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:27,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2114 Valid, 3495 Invalid, 5672 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 4954 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-12 05:48:27,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-12 05:48:27,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 528. [2022-07-12 05:48:27,774 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) [2022-07-12 05:48:27,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 528 states to 528 states and 872 transitions. [2022-07-12 05:48:27,777 INFO L78 Accepts]: Start accepts. Automaton has 528 states and 872 transitions. Word has length 88 [2022-07-12 05:48:27,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:27,777 INFO L495 AbstractCegarLoop]: Abstraction has 528 states and 872 transitions. [2022-07-12 05:48:27,777 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) [2022-07-12 05:48:27,778 INFO L276 IsEmpty]: Start isEmpty. Operand 528 states and 872 transitions. [2022-07-12 05:48:27,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-07-12 05:48:27,780 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:27,780 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] [2022-07-12 05:48:27,780 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 05:48:27,780 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:27,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:27,781 INFO L85 PathProgramCache]: Analyzing trace with hash -1623149487, now seen corresponding path program 1 times [2022-07-12 05:48:27,781 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:27,781 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726214422] [2022-07-12 05:48:27,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:27,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:27,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:27,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:27,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:27,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:27,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:27,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:28,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:28,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:28,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,039 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:48:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-12 05:48:28,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:48:28,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:48:28,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:48:28,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:28,058 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:28,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:28,058 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726214422] [2022-07-12 05:48:28,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [726214422] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:28,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:28,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:28,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1239279412] [2022-07-12 05:48:28,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:28,060 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:28,060 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:28,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:28,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:28,060 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) [2022-07-12 05:48:32,903 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:32,903 INFO L93 Difference]: Finished difference Result 1396 states and 2378 transitions. [2022-07-12 05:48:32,904 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:32,904 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 [2022-07-12 05:48:32,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:32,909 INFO L225 Difference]: With dead ends: 1396 [2022-07-12 05:48:32,909 INFO L226 Difference]: Without dead ends: 860 [2022-07-12 05:48:32,911 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 [2022-07-12 05:48:32,912 INFO L413 NwaCegarLoop]: 885 mSDtfsCounter, 2070 mSDsluCounter, 2563 mSDsCounter, 0 mSdLazyCounter, 4971 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2172 SdHoareTripleChecker+Valid, 3448 SdHoareTripleChecker+Invalid, 5691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 4971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:32,912 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2172 Valid, 3448 Invalid, 5691 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 4971 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 05:48:32,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-12 05:48:32,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-07-12 05:48:32,960 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) [2022-07-12 05:48:32,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 859 transitions. [2022-07-12 05:48:32,962 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 859 transitions. Word has length 89 [2022-07-12 05:48:32,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:32,962 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 859 transitions. [2022-07-12 05:48:32,962 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) [2022-07-12 05:48:32,963 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 859 transitions. [2022-07-12 05:48:32,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-07-12 05:48:32,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:32,964 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] [2022-07-12 05:48:32,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 05:48:32,964 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:32,965 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:32,965 INFO L85 PathProgramCache]: Analyzing trace with hash 1714059270, now seen corresponding path program 1 times [2022-07-12 05:48:32,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:32,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166481414] [2022-07-12 05:48:32,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:32,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:33,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:33,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:33,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:33,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:33,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:33,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:48:33,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:48:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-12 05:48:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-12 05:48:33,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-12 05:48:33,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:33,265 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:33,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:33,265 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166481414] [2022-07-12 05:48:33,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166481414] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:33,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:33,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:33,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035231978] [2022-07-12 05:48:33,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:33,266 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:33,266 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:33,267 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:33,267 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:33,268 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) [2022-07-12 05:48:37,601 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:37,602 INFO L93 Difference]: Finished difference Result 1366 states and 2329 transitions. [2022-07-12 05:48:37,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:37,602 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 [2022-07-12 05:48:37,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:37,607 INFO L225 Difference]: With dead ends: 1366 [2022-07-12 05:48:37,607 INFO L226 Difference]: Without dead ends: 860 [2022-07-12 05:48:37,609 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:48:37,611 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 2000 mSDsluCounter, 2462 mSDsCounter, 0 mSdLazyCounter, 4869 mSolverCounterSat, 720 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2102 SdHoareTripleChecker+Valid, 3292 SdHoareTripleChecker+Invalid, 5589 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 720 IncrementalHoareTripleChecker+Valid, 4869 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:37,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2102 Valid, 3292 Invalid, 5589 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [720 Valid, 4869 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 05:48:37,613 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 860 states. [2022-07-12 05:48:37,664 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 860 to 522. [2022-07-12 05:48:37,665 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) [2022-07-12 05:48:37,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 858 transitions. [2022-07-12 05:48:37,668 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 858 transitions. Word has length 90 [2022-07-12 05:48:37,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:37,668 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 858 transitions. [2022-07-12 05:48:37,668 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) [2022-07-12 05:48:37,668 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 858 transitions. [2022-07-12 05:48:37,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 05:48:37,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:37,673 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] [2022-07-12 05:48:37,674 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 05:48:37,674 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:37,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:37,674 INFO L85 PathProgramCache]: Analyzing trace with hash 1106325972, now seen corresponding path program 1 times [2022-07-12 05:48:37,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:37,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1377347570] [2022-07-12 05:48:37,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:37,675 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:37,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:37,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:37,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:37,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:37,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:37,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 05:48:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:48:37,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:48:37,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:48:37,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 05:48:37,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:37,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:37,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:37,955 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1377347570] [2022-07-12 05:48:37,955 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1377347570] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:37,955 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:37,955 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:37,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965145713] [2022-07-12 05:48:37,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:37,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:37,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:37,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:37,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:37,957 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) [2022-07-12 05:48:43,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:43,229 INFO L93 Difference]: Finished difference Result 1387 states and 2351 transitions. [2022-07-12 05:48:43,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:48:43,230 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 [2022-07-12 05:48:43,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:43,234 INFO L225 Difference]: With dead ends: 1387 [2022-07-12 05:48:43,234 INFO L226 Difference]: Without dead ends: 881 [2022-07-12 05:48:43,236 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-12 05:48:43,236 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1483 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 5093 mSolverCounterSat, 521 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1585 SdHoareTripleChecker+Valid, 3451 SdHoareTripleChecker+Invalid, 5614 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 521 IncrementalHoareTripleChecker+Valid, 5093 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:43,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1585 Valid, 3451 Invalid, 5614 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [521 Valid, 5093 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-12 05:48:43,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 881 states. [2022-07-12 05:48:43,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 881 to 527. [2022-07-12 05:48:43,290 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) [2022-07-12 05:48:43,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 527 states to 527 states and 863 transitions. [2022-07-12 05:48:43,293 INFO L78 Accepts]: Start accepts. Automaton has 527 states and 863 transitions. Word has length 91 [2022-07-12 05:48:43,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:43,293 INFO L495 AbstractCegarLoop]: Abstraction has 527 states and 863 transitions. [2022-07-12 05:48:43,293 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) [2022-07-12 05:48:43,293 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states and 863 transitions. [2022-07-12 05:48:43,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-07-12 05:48:43,295 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:43,295 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] [2022-07-12 05:48:43,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 05:48:43,295 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:43,295 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:43,296 INFO L85 PathProgramCache]: Analyzing trace with hash -1537712523, now seen corresponding path program 1 times [2022-07-12 05:48:43,296 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:43,296 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743340035] [2022-07-12 05:48:43,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:43,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:43,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:43,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:43,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:43,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:43,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 05:48:43,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:48:43,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:48:43,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-12 05:48:43,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-12 05:48:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:43,579 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:43,579 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:43,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743340035] [2022-07-12 05:48:43,579 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743340035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:43,579 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:43,579 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:43,579 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1088092178] [2022-07-12 05:48:43,579 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:43,580 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:43,580 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:43,580 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:43,580 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:43,581 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) [2022-07-12 05:48:48,564 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:48,564 INFO L93 Difference]: Finished difference Result 1389 states and 2350 transitions. [2022-07-12 05:48:48,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:48,565 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 [2022-07-12 05:48:48,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:48,569 INFO L225 Difference]: With dead ends: 1389 [2022-07-12 05:48:48,569 INFO L226 Difference]: Without dead ends: 854 [2022-07-12 05:48:48,571 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 [2022-07-12 05:48:48,572 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1507 mSDsluCounter, 2678 mSDsCounter, 0 mSdLazyCounter, 5064 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1609 SdHoareTripleChecker+Valid, 3558 SdHoareTripleChecker+Invalid, 5581 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 5064 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:48,572 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1609 Valid, 3558 Invalid, 5581 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 5064 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-12 05:48:48,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-12 05:48:48,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-07-12 05:48:48,630 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) [2022-07-12 05:48:48,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 844 transitions. [2022-07-12 05:48:48,632 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 844 transitions. Word has length 91 [2022-07-12 05:48:48,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:48,633 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 844 transitions. [2022-07-12 05:48:48,633 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) [2022-07-12 05:48:48,633 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 844 transitions. [2022-07-12 05:48:48,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:48:48,634 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:48,634 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] [2022-07-12 05:48:48,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 05:48:48,635 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:48,635 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:48,635 INFO L85 PathProgramCache]: Analyzing trace with hash -1696211253, now seen corresponding path program 1 times [2022-07-12 05:48:48,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:48,635 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [875667853] [2022-07-12 05:48:48,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:48,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:48,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:48,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:48,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:48,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:48:48,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:48:48,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:48:48,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:48:48,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:48:48,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:48,922 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:48,922 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:48,922 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [875667853] [2022-07-12 05:48:48,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [875667853] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:48,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:48,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:48,923 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [745133151] [2022-07-12 05:48:48,923 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:48,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:48,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:48,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:48,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:48,924 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) [2022-07-12 05:48:54,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:54,241 INFO L93 Difference]: Finished difference Result 1366 states and 2310 transitions. [2022-07-12 05:48:54,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:48:54,241 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 [2022-07-12 05:48:54,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:54,245 INFO L225 Difference]: With dead ends: 1366 [2022-07-12 05:48:54,245 INFO L226 Difference]: Without dead ends: 866 [2022-07-12 05:48:54,247 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=262, Unknown=0, NotChecked=0, Total=342 [2022-07-12 05:48:54,248 INFO L413 NwaCegarLoop]: 838 mSDtfsCounter, 970 mSDsluCounter, 2655 mSDsCounter, 0 mSdLazyCounter, 5055 mSolverCounterSat, 327 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1072 SdHoareTripleChecker+Valid, 3493 SdHoareTripleChecker+Invalid, 5382 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 327 IncrementalHoareTripleChecker+Valid, 5055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:54,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1072 Valid, 3493 Invalid, 5382 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [327 Valid, 5055 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-12 05:48:54,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-12 05:48:54,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 522. [2022-07-12 05:48:54,324 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) [2022-07-12 05:48:54,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 850 transitions. [2022-07-12 05:48:54,327 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 850 transitions. Word has length 92 [2022-07-12 05:48:54,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:54,327 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 850 transitions. [2022-07-12 05:48:54,327 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) [2022-07-12 05:48:54,327 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 850 transitions. [2022-07-12 05:48:54,329 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-07-12 05:48:54,329 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:54,329 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] [2022-07-12 05:48:54,329 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 05:48:54,329 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:54,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:54,330 INFO L85 PathProgramCache]: Analyzing trace with hash -435294003, now seen corresponding path program 1 times [2022-07-12 05:48:54,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:54,330 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2140690069] [2022-07-12 05:48:54,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:54,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:54,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:54,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:54,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:54,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:54,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:48:54,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:48:54,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:48:54,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:48:54,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:48:54,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:54,612 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:54,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:54,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2140690069] [2022-07-12 05:48:54,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2140690069] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:54,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:54,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-12 05:48:54,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586628015] [2022-07-12 05:48:54,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:54,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-12 05:48:54,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:54,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-12 05:48:54,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-12 05:48:54,614 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) [2022-07-12 05:48:58,692 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:48:58,692 INFO L93 Difference]: Finished difference Result 1369 states and 2311 transitions. [2022-07-12 05:48:58,693 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-12 05:48:58,693 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 [2022-07-12 05:48:58,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:48:58,696 INFO L225 Difference]: With dead ends: 1369 [2022-07-12 05:48:58,697 INFO L226 Difference]: Without dead ends: 854 [2022-07-12 05:48:58,698 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:48:58,699 INFO L413 NwaCegarLoop]: 818 mSDtfsCounter, 997 mSDsluCounter, 2545 mSDsCounter, 0 mSdLazyCounter, 4999 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1099 SdHoareTripleChecker+Valid, 3363 SdHoareTripleChecker+Invalid, 5325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 4999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:48:58,699 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1099 Valid, 3363 Invalid, 5325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 4999 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 05:48:58,700 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2022-07-12 05:48:58,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 516. [2022-07-12 05:48:58,767 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) [2022-07-12 05:48:58,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 516 states to 516 states and 843 transitions. [2022-07-12 05:48:58,769 INFO L78 Accepts]: Start accepts. Automaton has 516 states and 843 transitions. Word has length 92 [2022-07-12 05:48:58,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:48:58,770 INFO L495 AbstractCegarLoop]: Abstraction has 516 states and 843 transitions. [2022-07-12 05:48:58,770 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) [2022-07-12 05:48:58,770 INFO L276 IsEmpty]: Start isEmpty. Operand 516 states and 843 transitions. [2022-07-12 05:48:58,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 05:48:58,771 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:48:58,771 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] [2022-07-12 05:48:58,772 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 05:48:58,772 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:48:58,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:48:58,772 INFO L85 PathProgramCache]: Analyzing trace with hash -397472774, now seen corresponding path program 1 times [2022-07-12 05:48:58,772 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:48:58,772 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1190819189] [2022-07-12 05:48:58,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:48:58,773 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:48:58,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:58,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:58,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:48:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:48:58,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:48:58,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,971 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:48:58,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:48:58,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:48:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 05:48:58,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:48:58,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:48:58,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:48:58,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:48:58,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1190819189] [2022-07-12 05:48:58,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1190819189] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:48:58,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:48:58,984 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:48:58,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151608747] [2022-07-12 05:48:58,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:48:58,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:48:58,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:48:58,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:48:58,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:48:58,985 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) [2022-07-12 05:49:05,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:05,334 INFO L93 Difference]: Finished difference Result 2067 states and 3541 transitions. [2022-07-12 05:49:05,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:49:05,335 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 [2022-07-12 05:49:05,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:05,342 INFO L225 Difference]: With dead ends: 2067 [2022-07-12 05:49:05,343 INFO L226 Difference]: Without dead ends: 1569 [2022-07-12 05:49:05,345 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=206, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:49:05,345 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 4267 mSDsluCounter, 1741 mSDsCounter, 0 mSdLazyCounter, 4006 mSolverCounterSat, 1927 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4371 SdHoareTripleChecker+Valid, 2701 SdHoareTripleChecker+Invalid, 5933 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1927 IncrementalHoareTripleChecker+Valid, 4006 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:49:05,346 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4371 Valid, 2701 Invalid, 5933 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1927 Valid, 4006 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-12 05:49:05,348 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1569 states. [2022-07-12 05:49:05,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1569 to 963. [2022-07-12 05:49:05,502 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) [2022-07-12 05:49:05,505 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 963 states to 963 states and 1551 transitions. [2022-07-12 05:49:05,505 INFO L78 Accepts]: Start accepts. Automaton has 963 states and 1551 transitions. Word has length 93 [2022-07-12 05:49:05,506 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:05,506 INFO L495 AbstractCegarLoop]: Abstraction has 963 states and 1551 transitions. [2022-07-12 05:49:05,507 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) [2022-07-12 05:49:05,507 INFO L276 IsEmpty]: Start isEmpty. Operand 963 states and 1551 transitions. [2022-07-12 05:49:05,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-12 05:49:05,508 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:05,508 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:49:05,508 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-12 05:49:05,508 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:05,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:05,509 INFO L85 PathProgramCache]: Analyzing trace with hash 204066973, now seen corresponding path program 1 times [2022-07-12 05:49:05,509 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:05,509 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129986311] [2022-07-12 05:49:05,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:05,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:05,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:05,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:05,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:05,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:05,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:05,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:05,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:49:05,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,791 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:49:05,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:05,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:49:05,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:49:05,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:05,808 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:49:05,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:05,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129986311] [2022-07-12 05:49:05,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129986311] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:49:05,808 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1405156309] [2022-07-12 05:49:05,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:05,809 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:49:05,809 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:49:05,824 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) [2022-07-12 05:49:05,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:49:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:06,081 INFO L263 TraceCheckSpWp]: Trace formula consists of 1561 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:49:06,089 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:49:06,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:49:06,166 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:49:06,176 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1405156309] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:06,176 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:49:06,177 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-12 05:49:06,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1257474265] [2022-07-12 05:49:06,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:06,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:49:06,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:06,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:49:06,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:49:06,178 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) [2022-07-12 05:49:06,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:06,443 INFO L93 Difference]: Finished difference Result 2763 states and 4519 transitions. [2022-07-12 05:49:06,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:49:06,444 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 [2022-07-12 05:49:06,444 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:06,451 INFO L225 Difference]: With dead ends: 2763 [2022-07-12 05:49:06,451 INFO L226 Difference]: Without dead ends: 1818 [2022-07-12 05:49:06,455 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 [2022-07-12 05:49:06,456 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 [2022-07-12 05:49:06,456 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] [2022-07-12 05:49:06,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1818 states. [2022-07-12 05:49:06,752 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1818 to 1757. [2022-07-12 05:49:06,755 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) [2022-07-12 05:49:06,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1757 states to 1757 states and 2865 transitions. [2022-07-12 05:49:06,762 INFO L78 Accepts]: Start accepts. Automaton has 1757 states and 2865 transitions. Word has length 98 [2022-07-12 05:49:06,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:06,763 INFO L495 AbstractCegarLoop]: Abstraction has 1757 states and 2865 transitions. [2022-07-12 05:49:06,763 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) [2022-07-12 05:49:06,763 INFO L276 IsEmpty]: Start isEmpty. Operand 1757 states and 2865 transitions. [2022-07-12 05:49:06,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-12 05:49:06,765 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:06,765 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] [2022-07-12 05:49:06,786 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 05:49:06,984 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 [2022-07-12 05:49:06,984 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:06,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:06,984 INFO L85 PathProgramCache]: Analyzing trace with hash 1363197387, now seen corresponding path program 1 times [2022-07-12 05:49:06,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:06,985 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353679077] [2022-07-12 05:49:06,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:06,985 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:07,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:07,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:07,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:07,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:07,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:07,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:49:07,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-12 05:49:07,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:07,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:49:07,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:49:07,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:49:07,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:07,338 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353679077] [2022-07-12 05:49:07,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353679077] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:49:07,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1160047726] [2022-07-12 05:49:07,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:07,339 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:49:07,339 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:49:07,340 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) [2022-07-12 05:49:07,355 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:49:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:07,580 INFO L263 TraceCheckSpWp]: Trace formula consists of 1562 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:49:07,584 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:49:07,645 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:49:07,646 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:49:07,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1160047726] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:07,646 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:49:07,646 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [12] total 13 [2022-07-12 05:49:07,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1363214213] [2022-07-12 05:49:07,646 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:07,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:49:07,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:07,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:49:07,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:49:07,647 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) [2022-07-12 05:49:07,975 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:07,975 INFO L93 Difference]: Finished difference Result 3935 states and 6456 transitions. [2022-07-12 05:49:07,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:49:07,976 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 [2022-07-12 05:49:07,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:07,985 INFO L225 Difference]: With dead ends: 3935 [2022-07-12 05:49:07,986 INFO L226 Difference]: Without dead ends: 2196 [2022-07-12 05:49:07,992 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 129 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2022-07-12 05:49:07,992 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 [2022-07-12 05:49:07,993 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] [2022-07-12 05:49:07,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2196 states. [2022-07-12 05:49:08,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2196 to 2149. [2022-07-12 05:49:08,319 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) [2022-07-12 05:49:08,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3527 transitions. [2022-07-12 05:49:08,327 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3527 transitions. Word has length 99 [2022-07-12 05:49:08,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:08,328 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3527 transitions. [2022-07-12 05:49:08,328 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) [2022-07-12 05:49:08,328 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3527 transitions. [2022-07-12 05:49:08,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-12 05:49:08,330 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:08,330 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] [2022-07-12 05:49:08,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:49:08,543 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 [2022-07-12 05:49:08,543 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:08,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:08,544 INFO L85 PathProgramCache]: Analyzing trace with hash 1972797999, now seen corresponding path program 1 times [2022-07-12 05:49:08,544 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:08,544 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1655290413] [2022-07-12 05:49:08,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:08,544 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:08,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:08,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:08,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:08,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:08,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:08,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:08,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:49:08,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:49:08,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:49:08,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:08,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-12 05:49:08,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 05:49:08,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:08,842 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:49:08,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:08,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1655290413] [2022-07-12 05:49:08,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1655290413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:08,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:49:08,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:49:08,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67576517] [2022-07-12 05:49:08,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:08,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:49:08,843 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:08,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:49:08,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:49:08,844 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) [2022-07-12 05:49:23,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:23,477 INFO L93 Difference]: Finished difference Result 11101 states and 20444 transitions. [2022-07-12 05:49:23,477 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 05:49:23,477 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 [2022-07-12 05:49:23,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:23,528 INFO L225 Difference]: With dead ends: 11101 [2022-07-12 05:49:23,529 INFO L226 Difference]: Without dead ends: 8970 [2022-07-12 05:49:23,543 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:49:23,544 INFO L413 NwaCegarLoop]: 1117 mSDtfsCounter, 4780 mSDsluCounter, 2747 mSDsCounter, 0 mSdLazyCounter, 7951 mSolverCounterSat, 2847 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4889 SdHoareTripleChecker+Valid, 3864 SdHoareTripleChecker+Invalid, 10798 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2847 IncrementalHoareTripleChecker+Valid, 7951 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:49:23,544 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4889 Valid, 3864 Invalid, 10798 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2847 Valid, 7951 Invalid, 0 Unknown, 0 Unchecked, 10.7s Time] [2022-07-12 05:49:23,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8970 states. [2022-07-12 05:49:24,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8970 to 5277. [2022-07-12 05:49:24,868 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) [2022-07-12 05:49:24,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5277 states to 5277 states and 9345 transitions. [2022-07-12 05:49:24,906 INFO L78 Accepts]: Start accepts. Automaton has 5277 states and 9345 transitions. Word has length 101 [2022-07-12 05:49:24,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:24,906 INFO L495 AbstractCegarLoop]: Abstraction has 5277 states and 9345 transitions. [2022-07-12 05:49:24,907 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) [2022-07-12 05:49:24,907 INFO L276 IsEmpty]: Start isEmpty. Operand 5277 states and 9345 transitions. [2022-07-12 05:49:24,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-12 05:49:24,909 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:24,909 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] [2022-07-12 05:49:24,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-12 05:49:24,910 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:24,910 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:24,910 INFO L85 PathProgramCache]: Analyzing trace with hash -226788623, now seen corresponding path program 1 times [2022-07-12 05:49:24,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:24,910 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712160962] [2022-07-12 05:49:24,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:24,911 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:24,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:25,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:25,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:25,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:25,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:25,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:25,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:49:25,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:49:25,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-12 05:49:25,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:25,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:49:25,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 05:49:25,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:25,155 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:49:25,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:25,155 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712160962] [2022-07-12 05:49:25,155 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712160962] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:25,155 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:49:25,155 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:49:25,155 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388044562] [2022-07-12 05:49:25,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:25,156 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:49:25,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:25,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:49:25,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:49:25,157 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) [2022-07-12 05:49:30,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:30,196 INFO L93 Difference]: Finished difference Result 11995 states and 21665 transitions. [2022-07-12 05:49:30,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:49:30,196 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 [2022-07-12 05:49:30,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:30,258 INFO L225 Difference]: With dead ends: 11995 [2022-07-12 05:49:30,259 INFO L226 Difference]: Without dead ends: 6736 [2022-07-12 05:49:30,286 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 [2022-07-12 05:49:30,287 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1453 mSDsluCounter, 1236 mSDsCounter, 0 mSdLazyCounter, 2459 mSolverCounterSat, 513 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1556 SdHoareTripleChecker+Valid, 2116 SdHoareTripleChecker+Invalid, 2972 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 513 IncrementalHoareTripleChecker+Valid, 2459 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:49:30,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1556 Valid, 2116 Invalid, 2972 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [513 Valid, 2459 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:49:30,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6736 states. [2022-07-12 05:49:31,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6736 to 5285. [2022-07-12 05:49:31,568 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) [2022-07-12 05:49:31,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5285 states to 5285 states and 9337 transitions. [2022-07-12 05:49:31,599 INFO L78 Accepts]: Start accepts. Automaton has 5285 states and 9337 transitions. Word has length 102 [2022-07-12 05:49:31,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:31,599 INFO L495 AbstractCegarLoop]: Abstraction has 5285 states and 9337 transitions. [2022-07-12 05:49:31,599 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) [2022-07-12 05:49:31,599 INFO L276 IsEmpty]: Start isEmpty. Operand 5285 states and 9337 transitions. [2022-07-12 05:49:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-07-12 05:49:31,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:31,602 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] [2022-07-12 05:49:31,603 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 05:49:31,603 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:31,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:31,603 INFO L85 PathProgramCache]: Analyzing trace with hash -468332789, now seen corresponding path program 1 times [2022-07-12 05:49:31,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:31,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812973606] [2022-07-12 05:49:31,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:31,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:31,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:31,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:31,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:31,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:31,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:49:31,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:49:31,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:49:31,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:49:31,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-12 05:49:31,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:49:31,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:31,892 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:49:31,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:31,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812973606] [2022-07-12 05:49:31,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812973606] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:31,893 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:49:31,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:49:31,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1279358914] [2022-07-12 05:49:31,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:31,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:49:31,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:31,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:49:31,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:49:31,895 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) [2022-07-12 05:49:50,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:49:50,899 INFO L93 Difference]: Finished difference Result 23187 states and 44894 transitions. [2022-07-12 05:49:50,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 05:49:50,899 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 [2022-07-12 05:49:50,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:49:50,999 INFO L225 Difference]: With dead ends: 23187 [2022-07-12 05:49:51,000 INFO L226 Difference]: Without dead ends: 17920 [2022-07-12 05:49:51,036 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:49:51,037 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 3731 mSDsluCounter, 3282 mSDsCounter, 0 mSdLazyCounter, 8373 mSolverCounterSat, 2405 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3840 SdHoareTripleChecker+Valid, 4525 SdHoareTripleChecker+Invalid, 10778 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2405 IncrementalHoareTripleChecker+Valid, 8373 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:49:51,037 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3840 Valid, 4525 Invalid, 10778 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2405 Valid, 8373 Invalid, 0 Unknown, 0 Unchecked, 11.7s Time] [2022-07-12 05:49:51,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17920 states. [2022-07-12 05:49:53,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17920 to 10527. [2022-07-12 05:49:53,812 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) [2022-07-12 05:49:53,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10527 states to 10527 states and 18986 transitions. [2022-07-12 05:49:53,892 INFO L78 Accepts]: Start accepts. Automaton has 10527 states and 18986 transitions. Word has length 110 [2022-07-12 05:49:53,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:49:53,893 INFO L495 AbstractCegarLoop]: Abstraction has 10527 states and 18986 transitions. [2022-07-12 05:49:53,893 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) [2022-07-12 05:49:53,893 INFO L276 IsEmpty]: Start isEmpty. Operand 10527 states and 18986 transitions. [2022-07-12 05:49:53,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-07-12 05:49:53,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:49:53,897 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] [2022-07-12 05:49:53,898 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 05:49:53,898 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:49:53,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:49:53,898 INFO L85 PathProgramCache]: Analyzing trace with hash 1224110669, now seen corresponding path program 1 times [2022-07-12 05:49:53,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:49:53,899 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [319069395] [2022-07-12 05:49:53,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:49:53,899 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:49:53,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,034 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:54,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:49:54,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:49:54,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:49:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:49:54,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:49:54,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:49:54,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-12 05:49:54,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:49:54,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:49:54,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 05:49:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:49:54,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:49:54,144 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 05:49:54,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:49:54,144 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [319069395] [2022-07-12 05:49:54,144 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [319069395] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:49:54,144 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:49:54,144 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:49:54,145 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [16159353] [2022-07-12 05:49:54,145 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:49:54,145 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:49:54,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:49:54,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:49:54,145 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:49:54,146 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) [2022-07-12 05:50:01,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:50:01,598 INFO L93 Difference]: Finished difference Result 23795 states and 44531 transitions. [2022-07-12 05:50:01,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:50:01,598 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 [2022-07-12 05:50:01,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:50:01,661 INFO L225 Difference]: With dead ends: 23795 [2022-07-12 05:50:01,662 INFO L226 Difference]: Without dead ends: 13286 [2022-07-12 05:50:01,729 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 [2022-07-12 05:50:01,729 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1921 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 2428 mSolverCounterSat, 692 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2025 SdHoareTripleChecker+Valid, 2037 SdHoareTripleChecker+Invalid, 3120 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 692 IncrementalHoareTripleChecker+Valid, 2428 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:50:01,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2025 Valid, 2037 Invalid, 3120 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [692 Valid, 2428 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:50:01,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13286 states. [2022-07-12 05:50:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13286 to 10567. [2022-07-12 05:50:04,393 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) [2022-07-12 05:50:04,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10567 states to 10567 states and 19008 transitions. [2022-07-12 05:50:04,476 INFO L78 Accepts]: Start accepts. Automaton has 10567 states and 19008 transitions. Word has length 111 [2022-07-12 05:50:04,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:50:04,476 INFO L495 AbstractCegarLoop]: Abstraction has 10567 states and 19008 transitions. [2022-07-12 05:50:04,476 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) [2022-07-12 05:50:04,477 INFO L276 IsEmpty]: Start isEmpty. Operand 10567 states and 19008 transitions. [2022-07-12 05:50:04,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-07-12 05:50:04,480 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:50:04,481 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] [2022-07-12 05:50:04,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 05:50:04,481 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:50:04,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:50:04,481 INFO L85 PathProgramCache]: Analyzing trace with hash -902491661, now seen corresponding path program 1 times [2022-07-12 05:50:04,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:50:04,481 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1226038487] [2022-07-12 05:50:04,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:50:04,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:50:04,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:04,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:04,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:50:04,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:04,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:04,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:50:04,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:50:04,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:50:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:50:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:50:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-12 05:50:04,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:50:04,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,742 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2022-07-12 05:50:04,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-12 05:50:04,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:04,745 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:50:04,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:50:04,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1226038487] [2022-07-12 05:50:04,746 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1226038487] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:50:04,746 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:50:04,746 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:50:04,746 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28977184] [2022-07-12 05:50:04,746 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:50:04,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:50:04,747 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:50:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:50:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:50:04,748 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) [2022-07-12 05:50:30,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:50:30,606 INFO L93 Difference]: Finished difference Result 46361 states and 95562 transitions. [2022-07-12 05:50:30,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 05:50:30,607 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 [2022-07-12 05:50:30,607 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:50:31,107 INFO L225 Difference]: With dead ends: 46361 [2022-07-12 05:50:31,108 INFO L226 Difference]: Without dead ends: 35812 [2022-07-12 05:50:31,211 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 [2022-07-12 05:50:31,212 INFO L413 NwaCegarLoop]: 1198 mSDtfsCounter, 3781 mSDsluCounter, 3046 mSDsCounter, 0 mSdLazyCounter, 8354 mSolverCounterSat, 2428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3891 SdHoareTripleChecker+Valid, 4244 SdHoareTripleChecker+Invalid, 10782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2428 IncrementalHoareTripleChecker+Valid, 8354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:50:31,212 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3891 Valid, 4244 Invalid, 10782 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2428 Valid, 8354 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-07-12 05:50:31,237 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35812 states. [2022-07-12 05:50:37,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35812 to 21127. [2022-07-12 05:50:37,246 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) [2022-07-12 05:50:37,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21127 states to 21127 states and 39063 transitions. [2022-07-12 05:50:37,462 INFO L78 Accepts]: Start accepts. Automaton has 21127 states and 39063 transitions. Word has length 120 [2022-07-12 05:50:37,462 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:50:37,462 INFO L495 AbstractCegarLoop]: Abstraction has 21127 states and 39063 transitions. [2022-07-12 05:50:37,462 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) [2022-07-12 05:50:37,462 INFO L276 IsEmpty]: Start isEmpty. Operand 21127 states and 39063 transitions. [2022-07-12 05:50:37,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-07-12 05:50:37,466 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:50:37,466 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] [2022-07-12 05:50:37,467 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 05:50:37,467 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:50:37,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:50:37,467 INFO L85 PathProgramCache]: Analyzing trace with hash 466629917, now seen corresponding path program 1 times [2022-07-12 05:50:37,467 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:50:37,467 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472298120] [2022-07-12 05:50:37,467 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:50:37,468 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:50:37,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:37,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:37,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:50:37,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:37,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:50:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:50:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:50:37,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:50:37,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2022-07-12 05:50:37,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:50:37,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:50:37,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 05:50:37,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 113 [2022-07-12 05:50:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:37,742 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:50:37,742 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:50:37,742 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472298120] [2022-07-12 05:50:37,743 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472298120] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:50:37,743 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:50:37,743 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:50:37,743 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689375600] [2022-07-12 05:50:37,743 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:50:37,744 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:50:37,744 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:50:37,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:50:37,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:50:37,745 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) [2022-07-12 05:50:50,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:50:50,281 INFO L93 Difference]: Finished difference Result 47635 states and 94243 transitions. [2022-07-12 05:50:50,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:50:50,282 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 [2022-07-12 05:50:50,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:50:50,454 INFO L225 Difference]: With dead ends: 47635 [2022-07-12 05:50:50,455 INFO L226 Difference]: Without dead ends: 26526 [2022-07-12 05:50:50,664 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 [2022-07-12 05:50:50,665 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 981 mSDsluCounter, 1282 mSDsCounter, 0 mSdLazyCounter, 2647 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1084 SdHoareTripleChecker+Valid, 2154 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 2647 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:50:50,665 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1084 Valid, 2154 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 2647 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-12 05:50:50,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26526 states. [2022-07-12 05:50:56,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26526 to 21207. [2022-07-12 05:50:56,607 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) [2022-07-12 05:50:56,821 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21207 states to 21207 states and 39119 transitions. [2022-07-12 05:50:56,825 INFO L78 Accepts]: Start accepts. Automaton has 21207 states and 39119 transitions. Word has length 121 [2022-07-12 05:50:56,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:50:56,835 INFO L495 AbstractCegarLoop]: Abstraction has 21207 states and 39119 transitions. [2022-07-12 05:50:56,835 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) [2022-07-12 05:50:56,835 INFO L276 IsEmpty]: Start isEmpty. Operand 21207 states and 39119 transitions. [2022-07-12 05:50:56,840 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-12 05:50:56,840 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:50:56,841 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] [2022-07-12 05:50:56,841 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 05:50:56,841 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:50:56,841 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:50:56,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1042938137, now seen corresponding path program 1 times [2022-07-12 05:50:56,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:50:56,842 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1154209129] [2022-07-12 05:50:56,842 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:50:56,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:50:56,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:57,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:50:57,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:50:57,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:50:57,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:50:57,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:50:57,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:50:57,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:50:57,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:50:57,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-12 05:50:57,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,132 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-12 05:50:57,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:50:57,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 114 [2022-07-12 05:50:57,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,147 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2022-07-12 05:50:57,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:50:57,158 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:50:57,158 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:50:57,158 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1154209129] [2022-07-12 05:50:57,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1154209129] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:50:57,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:50:57,158 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:50:57,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1801939887] [2022-07-12 05:50:57,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:50:57,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:50:57,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:50:57,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:50:57,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:50:57,161 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) [2022-07-12 05:51:37,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:51:37,098 INFO L93 Difference]: Finished difference Result 88249 states and 198389 transitions. [2022-07-12 05:51:37,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-12 05:51:37,099 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 [2022-07-12 05:51:37,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:51:37,770 INFO L225 Difference]: With dead ends: 88249 [2022-07-12 05:51:37,770 INFO L226 Difference]: Without dead ends: 67060 [2022-07-12 05:51:38,020 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 107 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:51:38,020 INFO L413 NwaCegarLoop]: 1197 mSDtfsCounter, 2828 mSDsluCounter, 3101 mSDsCounter, 0 mSdLazyCounter, 8597 mSolverCounterSat, 2012 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2939 SdHoareTripleChecker+Valid, 4298 SdHoareTripleChecker+Invalid, 10609 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2012 IncrementalHoareTripleChecker+Valid, 8597 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:51:38,020 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2939 Valid, 4298 Invalid, 10609 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2012 Valid, 8597 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-07-12 05:51:38,061 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67060 states. [2022-07-12 05:51:50,899 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67060 to 42459. [2022-07-12 05:51:50,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 42459 states, 31194 states have (on average 1.5956273642367123) internal successors, (49774), 33567 states have internal predecessors, (49774), 9249 states have call successors, (9249), 1494 states have call predecessors, (9249), 2015 states have return successors, (22663), 9243 states have call predecessors, (22663), 9215 states have call successors, (22663) [2022-07-12 05:51:51,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42459 states to 42459 states and 81686 transitions. [2022-07-12 05:51:51,478 INFO L78 Accepts]: Start accepts. Automaton has 42459 states and 81686 transitions. Word has length 131 [2022-07-12 05:51:51,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:51:51,478 INFO L495 AbstractCegarLoop]: Abstraction has 42459 states and 81686 transitions. [2022-07-12 05:51:51,478 INFO L496 AbstractCegarLoop]: INTERPOLANT 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) [2022-07-12 05:51:51,479 INFO L276 IsEmpty]: Start isEmpty. Operand 42459 states and 81686 transitions. [2022-07-12 05:51:51,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-12 05:51:51,483 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:51,484 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, 1] [2022-07-12 05:51:51,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-12 05:51:51,484 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:51,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:51,484 INFO L85 PathProgramCache]: Analyzing trace with hash 224298849, now seen corresponding path program 1 times [2022-07-12 05:51:51,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:51,485 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976160568] [2022-07-12 05:51:51,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:51,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:51,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:51,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:51,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:51,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:51,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:51,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:51:51,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:51:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:51:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:51:51,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:51:51,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-12 05:51:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-12 05:51:51,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:51:51,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 115 [2022-07-12 05:51:51,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-12 05:51:51,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,719 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-12 05:51:51,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:51,720 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976160568] [2022-07-12 05:51:51,720 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976160568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:51,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:51,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-12 05:51:51,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714324200] [2022-07-12 05:51:51,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:51,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-12 05:51:51,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:51,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-12 05:51:51,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-12 05:51:51,721 INFO L87 Difference]: Start difference. First operand 42459 states and 81686 transitions. Second operand has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-12 05:52:15,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:15,335 INFO L93 Difference]: Finished difference Result 95503 states and 207049 transitions. [2022-07-12 05:52:15,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-12 05:52:15,336 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.285714285714286) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-07-12 05:52:15,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:15,988 INFO L225 Difference]: With dead ends: 95503 [2022-07-12 05:52:15,988 INFO L226 Difference]: Without dead ends: 53014 [2022-07-12 05:52:16,560 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:52:16,561 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 1470 mSDsluCounter, 1222 mSDsCounter, 0 mSdLazyCounter, 2464 mSolverCounterSat, 515 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1574 SdHoareTripleChecker+Valid, 2093 SdHoareTripleChecker+Invalid, 2979 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 515 IncrementalHoareTripleChecker+Valid, 2464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:16,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1574 Valid, 2093 Invalid, 2979 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [515 Valid, 2464 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:52:16,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53014 states.