./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product22.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 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:51:32,137 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:51:32,139 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:51:32,177 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:51:32,178 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:51:32,179 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:51:32,180 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:51:32,182 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:51:32,183 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:51:32,186 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:51:32,187 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:51:32,188 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:51:32,189 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:51:32,190 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:51:32,191 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:51:32,193 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:51:32,194 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:51:32,195 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:51:32,196 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:51:32,200 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:51:32,201 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:51:32,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:51:32,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:51:32,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:51:32,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:51:32,209 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:51:32,209 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:51:32,209 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:51:32,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:51:32,210 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:51:32,211 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:51:32,211 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:51:32,213 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:51:32,213 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:51:32,213 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:51:32,215 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:51:32,215 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:51:32,215 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:51:32,216 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:51:32,216 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:51:32,216 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:51:32,218 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:51:32,218 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:51:32,240 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:51:32,240 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:51:32,241 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:51:32,241 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:51:32,241 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:51:32,241 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:51:32,242 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:51:32,242 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:51:32,242 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:51:32,243 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:51:32,243 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:51:32,243 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:51:32,243 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:51:32,244 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:51:32,245 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:51:32,245 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:51:32,245 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:51:32,245 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:51:32,245 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:51:32,245 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:51:32,246 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:51:32,247 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8090ac1e7e8284dad30217492085f9e11f6491349a4adb4aa3c2904a72e0131a [2022-07-19 16:51:32,448 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:51:32,467 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:51:32,469 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:51:32,470 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:51:32,470 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:51:32,471 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2022-07-19 16:51:32,525 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd722a68/d977b917888b4fab8e760e010756be8f/FLAGb35d76aa4 [2022-07-19 16:51:32,931 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:51:32,931 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product22.cil.c [2022-07-19 16:51:32,947 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd722a68/d977b917888b4fab8e760e010756be8f/FLAGb35d76aa4 [2022-07-19 16:51:32,956 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/efd722a68/d977b917888b4fab8e760e010756be8f [2022-07-19 16:51:32,957 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:51:32,958 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:51:32,959 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:51:32,959 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:51:32,962 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:51:32,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:51:32" (1/1) ... [2022-07-19 16:51:32,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c080f1b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:32, skipping insertion in model container [2022-07-19 16:51:32,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:51:32" (1/1) ... [2022-07-19 16:51:32,967 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:51:33,036 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:51:33,171 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_spec2_product22.cil.c[1545,1558] [2022-07-19 16:51:33,344 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:51:33,351 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:51:33,371 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_spec2_product22.cil.c[1545,1558] [2022-07-19 16:51:33,469 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:51:33,491 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:51:33,492 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33 WrapperNode [2022-07-19 16:51:33,492 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:51:33,493 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:51:33,493 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:51:33,493 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:51:33,497 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,519 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,559 INFO L137 Inliner]: procedures = 94, calls = 345, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 876 [2022-07-19 16:51:33,559 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:51:33,560 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:51:33,560 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:51:33,560 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:51:33,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,565 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,571 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,571 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,583 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,592 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,595 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,600 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:51:33,600 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:51:33,600 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:51:33,600 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:51:33,601 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (1/1) ... [2022-07-19 16:51:33,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:51:33,616 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:33,626 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:51:33,660 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:51:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:51:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:51:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:51:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:51:33,670 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:51:33,670 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:51:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:51:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:51:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:51:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:51:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:51:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:51:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:51:33,671 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:51:33,671 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:51:33,677 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:51:33,677 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:51:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:51:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:51:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:51:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:51:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:51:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:51:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:51:33,678 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:51:33,678 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:51:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:51:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:51:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:51:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:51:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:51:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:51:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:51:33,679 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:51:33,679 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:51:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:51:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:51:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:51:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:51:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:51:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:51:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:51:33,680 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:51:33,680 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:51:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:51:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:51:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-19 16:51:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-19 16:51:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-07-19 16:51:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-07-19 16:51:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:51:33,681 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:51:33,681 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:51:33,682 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:51:33,805 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:51:33,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:51:34,482 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:51:34,496 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:51:34,496 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:51:34,499 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:51:34 BoogieIcfgContainer [2022-07-19 16:51:34,499 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:51:34,500 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:51:34,501 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:51:34,503 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:51:34,503 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:51:32" (1/3) ... [2022-07-19 16:51:34,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d46d7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:51:34, skipping insertion in model container [2022-07-19 16:51:34,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:51:33" (2/3) ... [2022-07-19 16:51:34,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3d46d7ce and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:51:34, skipping insertion in model container [2022-07-19 16:51:34,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:51:34" (3/3) ... [2022-07-19 16:51:34,506 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product22.cil.c [2022-07-19 16:51:34,518 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:51:34,519 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:51:34,590 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:51:34,594 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@651824ec, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@79db9f43 [2022-07-19 16:51:34,595 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:51:34,599 INFO L276 IsEmpty]: Start isEmpty. Operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) [2022-07-19 16:51:34,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 16:51:34,610 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:34,611 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:34,611 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:34,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:34,615 INFO L85 PathProgramCache]: Analyzing trace with hash -992084887, now seen corresponding path program 1 times [2022-07-19 16:51:34,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:34,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535639177] [2022-07-19 16:51:34,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:34,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:34,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:34,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:34,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:34,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:34,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:51:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:51:35,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:35,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:35,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:35,267 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:35,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:35,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535639177] [2022-07-19 16:51:35,268 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535639177] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:35,268 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:35,268 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:35,269 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999250554] [2022-07-19 16:51:35,270 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:35,273 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:35,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:35,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:35,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:35,308 INFO L87 Difference]: Start difference. First operand has 572 states, 447 states have (on average 1.691275167785235) internal successors, (756), 470 states have internal predecessors, (756), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 91 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:38,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:38,767 INFO L93 Difference]: Finished difference Result 1287 states and 2173 transitions. [2022-07-19 16:51:38,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:38,771 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 60 [2022-07-19 16:51:38,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:38,786 INFO L225 Difference]: With dead ends: 1287 [2022-07-19 16:51:38,787 INFO L226 Difference]: Without dead ends: 727 [2022-07-19 16:51:38,795 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:38,797 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1140 mSDsluCounter, 862 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 294 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1224 SdHoareTripleChecker+Valid, 1726 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 294 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:38,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1224 Valid, 1726 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [294 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:38,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-19 16:51:38,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-19 16:51:38,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6870748299319729) internal successors, (744), 462 states have internal predecessors, (744), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:51:38,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 935 transitions. [2022-07-19 16:51:38,911 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 935 transitions. Word has length 60 [2022-07-19 16:51:38,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:38,911 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 935 transitions. [2022-07-19 16:51:38,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 4 states have internal predecessors, (45), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:38,912 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 935 transitions. [2022-07-19 16:51:38,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 16:51:38,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:38,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:38,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:51:38,916 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:38,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:38,917 INFO L85 PathProgramCache]: Analyzing trace with hash -1651182718, now seen corresponding path program 1 times [2022-07-19 16:51:38,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:38,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028199840] [2022-07-19 16:51:38,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:38,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:38,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:39,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:39,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:39,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:39,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:39,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:39,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:39,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:39,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:39,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028199840] [2022-07-19 16:51:39,212 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028199840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:39,212 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:39,212 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:39,212 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [458529936] [2022-07-19 16:51:39,212 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:39,213 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:39,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:39,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:39,214 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:39,214 INFO L87 Difference]: Start difference. First operand 564 states and 935 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:42,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:42,460 INFO L93 Difference]: Finished difference Result 1273 states and 2139 transitions. [2022-07-19 16:51:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:42,468 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 63 [2022-07-19 16:51:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:42,472 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:51:42,472 INFO L226 Difference]: Without dead ends: 727 [2022-07-19 16:51:42,475 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:42,476 INFO L413 NwaCegarLoop]: 853 mSDtfsCounter, 1138 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2162 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1222 SdHoareTripleChecker+Valid, 1685 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:42,476 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1222 Valid, 1685 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2162 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:42,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-19 16:51:42,525 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-19 16:51:42,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6848072562358276) internal successors, (743), 462 states have internal predecessors, (743), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:51:42,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 934 transitions. [2022-07-19 16:51:42,529 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 934 transitions. Word has length 63 [2022-07-19 16:51:42,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:42,530 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 934 transitions. [2022-07-19 16:51:42,531 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:42,531 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 934 transitions. [2022-07-19 16:51:42,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 16:51:42,534 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:42,534 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:42,534 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:51:42,535 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:42,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:42,535 INFO L85 PathProgramCache]: Analyzing trace with hash 722898553, now seen corresponding path program 1 times [2022-07-19 16:51:42,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:42,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1008395919] [2022-07-19 16:51:42,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:42,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:42,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:42,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:42,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:42,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:51:42,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:42,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:42,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:42,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:42,825 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:42,825 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:42,825 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1008395919] [2022-07-19 16:51:42,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1008395919] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:42,827 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:42,827 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:42,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [76873524] [2022-07-19 16:51:42,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:42,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:42,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:42,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:42,829 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:42,829 INFO L87 Difference]: Start difference. First operand 564 states and 934 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:46,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:46,404 INFO L93 Difference]: Finished difference Result 1273 states and 2138 transitions. [2022-07-19 16:51:46,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:46,404 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-19 16:51:46,405 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:46,408 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:51:46,408 INFO L226 Difference]: Without dead ends: 727 [2022-07-19 16:51:46,410 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:46,411 INFO L413 NwaCegarLoop]: 848 mSDtfsCounter, 680 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2342 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 764 SdHoareTripleChecker+Valid, 1678 SdHoareTripleChecker+Invalid, 2489 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:46,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [764 Valid, 1678 Invalid, 2489 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2342 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:51:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-19 16:51:46,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-19 16:51:46,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6825396825396826) internal successors, (742), 462 states have internal predecessors, (742), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:51:46,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 933 transitions. [2022-07-19 16:51:46,459 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 933 transitions. Word has length 64 [2022-07-19 16:51:46,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:46,459 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 933 transitions. [2022-07-19 16:51:46,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:46,460 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 933 transitions. [2022-07-19 16:51:46,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 16:51:46,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:46,461 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:46,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:51:46,461 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:46,462 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:46,462 INFO L85 PathProgramCache]: Analyzing trace with hash 342813406, now seen corresponding path program 1 times [2022-07-19 16:51:46,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:46,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019638836] [2022-07-19 16:51:46,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:46,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:46,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:46,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:46,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:51:46,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:51:46,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:46,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:46,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:46,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:46,721 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:46,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019638836] [2022-07-19 16:51:46,721 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019638836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:46,721 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:46,721 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:46,721 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107855634] [2022-07-19 16:51:46,721 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:46,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:46,722 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:46,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:46,722 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:46,723 INFO L87 Difference]: Start difference. First operand 564 states and 933 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:49,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:49,738 INFO L93 Difference]: Finished difference Result 1273 states and 2137 transitions. [2022-07-19 16:51:49,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:49,738 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 65 [2022-07-19 16:51:49,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:49,754 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:51:49,754 INFO L226 Difference]: Without dead ends: 727 [2022-07-19 16:51:49,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:49,756 INFO L413 NwaCegarLoop]: 849 mSDtfsCounter, 1133 mSDsluCounter, 825 mSDsCounter, 0 mSdLazyCounter, 2158 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1217 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 2458 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:49,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1217 Valid, 1674 Invalid, 2458 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2158 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:51:49,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-19 16:51:49,784 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-19 16:51:49,785 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6802721088435375) internal successors, (741), 462 states have internal predecessors, (741), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:51:49,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 932 transitions. [2022-07-19 16:51:49,787 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 932 transitions. Word has length 65 [2022-07-19 16:51:49,787 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:49,788 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 932 transitions. [2022-07-19 16:51:49,788 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:49,788 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 932 transitions. [2022-07-19 16:51:49,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 16:51:49,789 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:49,789 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:49,789 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:51:49,789 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:49,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:49,790 INFO L85 PathProgramCache]: Analyzing trace with hash 482915221, now seen corresponding path program 1 times [2022-07-19 16:51:49,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:49,790 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1344567447] [2022-07-19 16:51:49,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:49,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:49,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:49,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:49,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:49,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:51:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:50,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:51:50,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:50,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:50,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:50,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:50,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:50,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:50,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:50,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:50,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1344567447] [2022-07-19 16:51:50,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1344567447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:50,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:50,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:50,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304323464] [2022-07-19 16:51:50,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:50,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:50,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:50,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:50,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:50,034 INFO L87 Difference]: Start difference. First operand 564 states and 932 transitions. Second operand has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:53,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:53,434 INFO L93 Difference]: Finished difference Result 1273 states and 2136 transitions. [2022-07-19 16:51:53,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:51:53,439 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 66 [2022-07-19 16:51:53,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:53,442 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:51:53,443 INFO L226 Difference]: Without dead ends: 727 [2022-07-19 16:51:53,445 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:51:53,449 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 674 mSDsluCounter, 850 mSDsCounter, 0 mSdLazyCounter, 2338 mSolverCounterSat, 143 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 758 SdHoareTripleChecker+Valid, 1708 SdHoareTripleChecker+Invalid, 2481 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 143 IncrementalHoareTripleChecker+Valid, 2338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:53,449 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [758 Valid, 1708 Invalid, 2481 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [143 Valid, 2338 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 16:51:53,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 727 states. [2022-07-19 16:51:53,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 727 to 564. [2022-07-19 16:51:53,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 441 states have (on average 1.6780045351473922) internal successors, (740), 462 states have internal predecessors, (740), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:51:53,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 931 transitions. [2022-07-19 16:51:53,482 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 931 transitions. Word has length 66 [2022-07-19 16:51:53,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:53,483 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 931 transitions. [2022-07-19 16:51:53,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.5) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:51:53,483 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 931 transitions. [2022-07-19 16:51:53,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:51:53,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:53,485 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:53,486 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:51:53,486 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:53,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:53,486 INFO L85 PathProgramCache]: Analyzing trace with hash -431056326, now seen corresponding path program 1 times [2022-07-19 16:51:53,487 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:53,487 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [703532413] [2022-07-19 16:51:53,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:53,487 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:53,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:53,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:53,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:51:53,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:53,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:53,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:53,806 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:53,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [703532413] [2022-07-19 16:51:53,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [703532413] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:53,807 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:53,807 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:51:53,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1007365169] [2022-07-19 16:51:53,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:53,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:51:53,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:53,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:51:53,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:51:53,810 INFO L87 Difference]: Start difference. First operand 564 states and 931 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:51:57,901 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:57,901 INFO L93 Difference]: Finished difference Result 1250 states and 2086 transitions. [2022-07-19 16:51:57,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:57,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-19 16:51:57,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:57,905 INFO L225 Difference]: With dead ends: 1250 [2022-07-19 16:51:57,905 INFO L226 Difference]: Without dead ends: 753 [2022-07-19 16:51:57,908 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:51:57,909 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1239 mSDsluCounter, 1761 mSDsCounter, 0 mSdLazyCounter, 4465 mSolverCounterSat, 305 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1324 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 4770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 305 IncrementalHoareTripleChecker+Valid, 4465 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:57,909 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1324 Valid, 2619 Invalid, 4770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [305 Valid, 4465 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:51:57,910 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-07-19 16:51:57,941 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 577. [2022-07-19 16:51:57,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6740576496674058) internal successors, (755), 474 states have internal predecessors, (755), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:51:57,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 950 transitions. [2022-07-19 16:51:57,945 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 950 transitions. Word has length 67 [2022-07-19 16:51:57,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:57,945 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 950 transitions. [2022-07-19 16:51:57,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:51:57,945 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 950 transitions. [2022-07-19 16:51:57,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:51:57,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:57,947 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:51:57,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:51:57,947 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:57,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:57,947 INFO L85 PathProgramCache]: Analyzing trace with hash -671596455, now seen corresponding path program 1 times [2022-07-19 16:51:57,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:57,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1116599854] [2022-07-19 16:51:57,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:57,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:58,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:58,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:58,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:51:58,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:58,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:58,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:51:58,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:58,193 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:51:58,193 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:58,194 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1116599854] [2022-07-19 16:51:58,194 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1116599854] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:58,194 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:58,194 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:51:58,194 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [504533672] [2022-07-19 16:51:58,194 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:58,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:51:58,195 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:58,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:51:58,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:51:58,195 INFO L87 Difference]: Start difference. First operand 577 states and 950 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:01,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:01,182 INFO L93 Difference]: Finished difference Result 1264 states and 2109 transitions. [2022-07-19 16:52:01,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:01,183 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2022-07-19 16:52:01,183 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:01,186 INFO L225 Difference]: With dead ends: 1264 [2022-07-19 16:52:01,186 INFO L226 Difference]: Without dead ends: 749 [2022-07-19 16:52:01,188 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:01,188 INFO L413 NwaCegarLoop]: 797 mSDtfsCounter, 1191 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2129 mSolverCounterSat, 331 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 331 IncrementalHoareTripleChecker+Valid, 2129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:01,189 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1612 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [331 Valid, 2129 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:52:01,190 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-19 16:52:01,220 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-19 16:52:01,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6629711751662972) internal successors, (750), 474 states have internal predecessors, (750), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:01,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 945 transitions. [2022-07-19 16:52:01,224 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 945 transitions. Word has length 67 [2022-07-19 16:52:01,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:01,224 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 945 transitions. [2022-07-19 16:52:01,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 945 transitions. [2022-07-19 16:52:01,228 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 16:52:01,228 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:01,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:01,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:52:01,229 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:01,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:01,229 INFO L85 PathProgramCache]: Analyzing trace with hash -1455824306, now seen corresponding path program 1 times [2022-07-19 16:52:01,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:01,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [675000844] [2022-07-19 16:52:01,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:01,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:52:01,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:01,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,511 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:01,511 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:01,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [675000844] [2022-07-19 16:52:01,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [675000844] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:01,512 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:01,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:01,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1851349869] [2022-07-19 16:52:01,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:01,512 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:01,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:01,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:01,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:01,513 INFO L87 Difference]: Start difference. First operand 577 states and 945 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:04,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:04,656 INFO L93 Difference]: Finished difference Result 1264 states and 2104 transitions. [2022-07-19 16:52:04,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:04,656 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2022-07-19 16:52:04,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:04,659 INFO L225 Difference]: With dead ends: 1264 [2022-07-19 16:52:04,659 INFO L226 Difference]: Without dead ends: 749 [2022-07-19 16:52:04,661 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:04,661 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 739 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 2294 mSolverCounterSat, 173 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1632 SdHoareTripleChecker+Invalid, 2467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 173 IncrementalHoareTripleChecker+Valid, 2294 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:04,662 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1632 Invalid, 2467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [173 Valid, 2294 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:52:04,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-19 16:52:04,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-19 16:52:04,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6518847006651884) internal successors, (745), 474 states have internal predecessors, (745), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:04,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 940 transitions. [2022-07-19 16:52:04,696 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 940 transitions. Word has length 68 [2022-07-19 16:52:04,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:04,696 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 940 transitions. [2022-07-19 16:52:04,696 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:04,697 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 940 transitions. [2022-07-19 16:52:04,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 16:52:04,698 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:04,698 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:04,698 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:52:04,698 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:04,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:04,698 INFO L85 PathProgramCache]: Analyzing trace with hash 2054400190, now seen corresponding path program 1 times [2022-07-19 16:52:04,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:04,699 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313180126] [2022-07-19 16:52:04,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:04,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:04,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:04,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:04,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:04,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:52:04,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:04,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:04,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:04,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:04,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:04,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:04,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313180126] [2022-07-19 16:52:04,957 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313180126] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:04,957 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:04,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:04,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783118402] [2022-07-19 16:52:04,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:04,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:04,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:04,957 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:04,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:04,958 INFO L87 Difference]: Start difference. First operand 577 states and 940 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:08,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:08,193 INFO L93 Difference]: Finished difference Result 1264 states and 2099 transitions. [2022-07-19 16:52:08,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:08,194 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2022-07-19 16:52:08,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:08,197 INFO L225 Difference]: With dead ends: 1264 [2022-07-19 16:52:08,197 INFO L226 Difference]: Without dead ends: 749 [2022-07-19 16:52:08,198 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:08,199 INFO L413 NwaCegarLoop]: 800 mSDtfsCounter, 738 mSDsluCounter, 831 mSDsCounter, 0 mSdLazyCounter, 2271 mSolverCounterSat, 169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 822 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 169 IncrementalHoareTripleChecker+Valid, 2271 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:08,199 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [822 Valid, 1631 Invalid, 2440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [169 Valid, 2271 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 16:52:08,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-19 16:52:08,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-19 16:52:08,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6407982261640799) internal successors, (740), 474 states have internal predecessors, (740), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:08,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2022-07-19 16:52:08,235 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 69 [2022-07-19 16:52:08,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:08,235 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2022-07-19 16:52:08,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:08,236 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2022-07-19 16:52:08,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:52:08,237 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:08,237 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:08,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:52:08,237 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:08,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:08,237 INFO L85 PathProgramCache]: Analyzing trace with hash -171355341, now seen corresponding path program 1 times [2022-07-19 16:52:08,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:08,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1348151137] [2022-07-19 16:52:08,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:08,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:08,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:08,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:08,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:08,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:08,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:08,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:08,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:08,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:08,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:08,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1348151137] [2022-07-19 16:52:08,507 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1348151137] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:08,507 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:08,507 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:08,507 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750240265] [2022-07-19 16:52:08,507 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:08,507 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:08,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:08,508 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:08,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:08,508 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:12,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:12,527 INFO L93 Difference]: Finished difference Result 1256 states and 2076 transitions. [2022-07-19 16:52:12,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:12,528 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-19 16:52:12,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:12,531 INFO L225 Difference]: With dead ends: 1256 [2022-07-19 16:52:12,531 INFO L226 Difference]: Without dead ends: 756 [2022-07-19 16:52:12,532 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:12,533 INFO L413 NwaCegarLoop]: 834 mSDtfsCounter, 1201 mSDsluCounter, 1779 mSDsCounter, 0 mSdLazyCounter, 4445 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1286 SdHoareTripleChecker+Valid, 2613 SdHoareTripleChecker+Invalid, 4752 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 4445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:12,534 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1286 Valid, 2613 Invalid, 4752 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 4445 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:52:12,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-19 16:52:12,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 577. [2022-07-19 16:52:12,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6385809312638582) internal successors, (739), 474 states have internal predecessors, (739), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:12,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 934 transitions. [2022-07-19 16:52:12,570 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 934 transitions. Word has length 70 [2022-07-19 16:52:12,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:12,570 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 934 transitions. [2022-07-19 16:52:12,570 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.875) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:12,571 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 934 transitions. [2022-07-19 16:52:12,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:52:12,572 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:12,572 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:12,572 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:52:12,572 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:12,573 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:12,573 INFO L85 PathProgramCache]: Analyzing trace with hash 1253693971, now seen corresponding path program 1 times [2022-07-19 16:52:12,573 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:12,573 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [677582103] [2022-07-19 16:52:12,573 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:12,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:12,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:12,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:12,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:52:12,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,795 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:12,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:12,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:12,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:12,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:12,802 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [677582103] [2022-07-19 16:52:12,802 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [677582103] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:12,802 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:12,802 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:12,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490347355] [2022-07-19 16:52:12,802 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:12,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:12,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:12,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:12,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:12,803 INFO L87 Difference]: Start difference. First operand 577 states and 934 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:15,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:15,640 INFO L93 Difference]: Finished difference Result 1264 states and 2091 transitions. [2022-07-19 16:52:15,640 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:15,641 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 16:52:15,641 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:15,644 INFO L225 Difference]: With dead ends: 1264 [2022-07-19 16:52:15,644 INFO L226 Difference]: Without dead ends: 749 [2022-07-19 16:52:15,646 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:15,646 INFO L413 NwaCegarLoop]: 795 mSDtfsCounter, 1200 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2084 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1284 SdHoareTripleChecker+Valid, 1597 SdHoareTripleChecker+Invalid, 2402 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 2084 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:15,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1284 Valid, 1597 Invalid, 2402 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 2084 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-07-19 16:52:15,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 749 states. [2022-07-19 16:52:15,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 749 to 577. [2022-07-19 16:52:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 451 states have (on average 1.6274944567627494) internal successors, (734), 474 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:15,682 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 929 transitions. [2022-07-19 16:52:15,682 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 929 transitions. Word has length 70 [2022-07-19 16:52:15,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:15,682 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 929 transitions. [2022-07-19 16:52:15,683 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:15,683 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 929 transitions. [2022-07-19 16:52:15,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:52:15,684 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:15,684 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:15,684 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:52:15,684 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:15,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:15,684 INFO L85 PathProgramCache]: Analyzing trace with hash -964545663, now seen corresponding path program 1 times [2022-07-19 16:52:15,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:15,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255014662] [2022-07-19 16:52:15,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:15,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:15,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:15,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:52:15,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:15,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:15,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:15,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:15,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:15,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255014662] [2022-07-19 16:52:15,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255014662] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:15,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:15,960 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:15,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1235766176] [2022-07-19 16:52:15,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:15,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:15,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:15,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:15,961 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:15,962 INFO L87 Difference]: Start difference. First operand 577 states and 929 transitions. Second operand has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:19,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:19,912 INFO L93 Difference]: Finished difference Result 1277 states and 2101 transitions. [2022-07-19 16:52:19,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:19,912 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-07-19 16:52:19,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:19,915 INFO L225 Difference]: With dead ends: 1277 [2022-07-19 16:52:19,915 INFO L226 Difference]: Without dead ends: 774 [2022-07-19 16:52:19,917 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:19,917 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1208 mSDsluCounter, 1750 mSDsCounter, 0 mSdLazyCounter, 4364 mSolverCounterSat, 314 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 2571 SdHoareTripleChecker+Invalid, 4678 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 314 IncrementalHoareTripleChecker+Valid, 4364 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:19,917 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 2571 Invalid, 4678 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [314 Valid, 4364 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:52:19,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 774 states. [2022-07-19 16:52:19,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 774 to 580. [2022-07-19 16:52:19,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 454 states have (on average 1.6211453744493391) internal successors, (736), 477 states have internal predecessors, (736), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:19,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 931 transitions. [2022-07-19 16:52:19,954 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 931 transitions. Word has length 71 [2022-07-19 16:52:19,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:19,954 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 931 transitions. [2022-07-19 16:52:19,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.0) internal successors, (56), 6 states have internal predecessors, (56), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:19,955 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 931 transitions. [2022-07-19 16:52:19,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:52:19,956 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:19,956 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:19,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:52:19,956 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:19,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:19,956 INFO L85 PathProgramCache]: Analyzing trace with hash -41878237, now seen corresponding path program 1 times [2022-07-19 16:52:19,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:19,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228538432] [2022-07-19 16:52:19,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:19,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:19,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:20,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:52:20,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:20,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:20,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:20,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:20,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:20,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:20,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228538432] [2022-07-19 16:52:20,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228538432] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:20,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:20,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:20,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [485420789] [2022-07-19 16:52:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:20,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:20,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:20,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:20,211 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:20,212 INFO L87 Difference]: Start difference. First operand 580 states and 931 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:22,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:22,945 INFO L93 Difference]: Finished difference Result 1273 states and 2092 transitions. [2022-07-19 16:52:22,946 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:52:22,946 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-19 16:52:22,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:22,949 INFO L225 Difference]: With dead ends: 1273 [2022-07-19 16:52:22,949 INFO L226 Difference]: Without dead ends: 755 [2022-07-19 16:52:22,950 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:22,950 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 1194 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2069 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1278 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:22,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1278 Valid, 1615 Invalid, 2376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2069 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 16:52:22,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 755 states. [2022-07-19 16:52:22,985 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 755 to 580. [2022-07-19 16:52:22,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 580 states, 454 states have (on average 1.6101321585903083) internal successors, (731), 477 states have internal predecessors, (731), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:22,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 926 transitions. [2022-07-19 16:52:22,988 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 926 transitions. Word has length 71 [2022-07-19 16:52:22,988 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:22,988 INFO L495 AbstractCegarLoop]: Abstraction has 580 states and 926 transitions. [2022-07-19 16:52:22,988 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:22,989 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 926 transitions. [2022-07-19 16:52:22,990 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:52:22,990 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:22,990 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:22,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:52:22,990 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:22,990 INFO L85 PathProgramCache]: Analyzing trace with hash -872008712, now seen corresponding path program 1 times [2022-07-19 16:52:22,991 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:22,991 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1955537323] [2022-07-19 16:52:22,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:22,991 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:23,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:23,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:23,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:23,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:52:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:23,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:23,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:23,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:23,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:23,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:23,232 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1955537323] [2022-07-19 16:52:23,232 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1955537323] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:23,232 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:23,232 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:23,232 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502107306] [2022-07-19 16:52:23,233 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:23,233 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:23,233 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:23,233 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:23,233 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:23,234 INFO L87 Difference]: Start difference. First operand 580 states and 926 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:27,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:27,189 INFO L93 Difference]: Finished difference Result 1283 states and 2098 transitions. [2022-07-19 16:52:27,189 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:27,189 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-19 16:52:27,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:27,192 INFO L225 Difference]: With dead ends: 1283 [2022-07-19 16:52:27,192 INFO L226 Difference]: Without dead ends: 780 [2022-07-19 16:52:27,194 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:27,194 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1197 mSDsluCounter, 1771 mSDsCounter, 0 mSdLazyCounter, 4347 mSolverCounterSat, 308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1282 SdHoareTripleChecker+Valid, 2594 SdHoareTripleChecker+Invalid, 4655 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 308 IncrementalHoareTripleChecker+Valid, 4347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:27,194 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1282 Valid, 2594 Invalid, 4655 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [308 Valid, 4347 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:52:27,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 780 states. [2022-07-19 16:52:27,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 780 to 584. [2022-07-19 16:52:27,232 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 458 states have (on average 1.6026200873362446) internal successors, (734), 481 states have internal predecessors, (734), 99 states have call successors, (99), 25 states have call predecessors, (99), 26 states have return successors, (96), 91 states have call predecessors, (96), 94 states have call successors, (96) [2022-07-19 16:52:27,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 929 transitions. [2022-07-19 16:52:27,234 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 929 transitions. Word has length 72 [2022-07-19 16:52:27,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:27,234 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 929 transitions. [2022-07-19 16:52:27,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:27,234 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 929 transitions. [2022-07-19 16:52:27,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:52:27,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:27,236 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:27,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:52:27,236 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:27,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:27,236 INFO L85 PathProgramCache]: Analyzing trace with hash 501573080, now seen corresponding path program 1 times [2022-07-19 16:52:27,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:27,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111493042] [2022-07-19 16:52:27,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:27,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:27,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:27,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:27,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:27,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:52:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:27,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:27,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:27,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:27,481 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:27,481 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:27,481 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111493042] [2022-07-19 16:52:27,481 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111493042] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:27,482 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:27,482 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:52:27,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087100143] [2022-07-19 16:52:27,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:27,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:52:27,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:27,483 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:52:27,483 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:52:27,483 INFO L87 Difference]: Start difference. First operand 584 states and 929 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:30,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:30,682 INFO L93 Difference]: Finished difference Result 1321 states and 2137 transitions. [2022-07-19 16:52:30,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:52:30,682 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 16:52:30,682 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:30,696 INFO L225 Difference]: With dead ends: 1321 [2022-07-19 16:52:30,696 INFO L226 Difference]: Without dead ends: 735 [2022-07-19 16:52:30,699 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:52:30,700 INFO L413 NwaCegarLoop]: 817 mSDtfsCounter, 669 mSDsluCounter, 814 mSDsCounter, 0 mSdLazyCounter, 2235 mSolverCounterSat, 146 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 753 SdHoareTripleChecker+Valid, 1631 SdHoareTripleChecker+Invalid, 2381 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 146 IncrementalHoareTripleChecker+Valid, 2235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:30,701 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [753 Valid, 1631 Invalid, 2381 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [146 Valid, 2235 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:52:30,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 735 states. [2022-07-19 16:52:30,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 735 to 565. [2022-07-19 16:52:30,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 565 states, 442 states have (on average 1.6108597285067874) internal successors, (712), 463 states have internal predecessors, (712), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:52:30,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 565 states to 565 states and 903 transitions. [2022-07-19 16:52:30,750 INFO L78 Accepts]: Start accepts. Automaton has 565 states and 903 transitions. Word has length 72 [2022-07-19 16:52:30,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:30,751 INFO L495 AbstractCegarLoop]: Abstraction has 565 states and 903 transitions. [2022-07-19 16:52:30,751 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:52:30,751 INFO L276 IsEmpty]: Start isEmpty. Operand 565 states and 903 transitions. [2022-07-19 16:52:30,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 16:52:30,752 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:30,752 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:30,752 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:52:30,752 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:30,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:30,753 INFO L85 PathProgramCache]: Analyzing trace with hash 908269926, now seen corresponding path program 1 times [2022-07-19 16:52:30,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:30,753 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1727918216] [2022-07-19 16:52:30,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:30,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:30,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:30,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:30,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:30,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:30,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:30,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:52:30,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:30,995 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:30,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:31,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:31,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:31,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:31,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:31,003 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:31,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1727918216] [2022-07-19 16:52:31,003 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1727918216] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:31,003 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:31,003 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:31,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31288434] [2022-07-19 16:52:31,003 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:31,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:31,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:31,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:31,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:31,004 INFO L87 Difference]: Start difference. First operand 565 states and 903 transitions. Second operand has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:35,326 INFO L93 Difference]: Finished difference Result 1256 states and 2052 transitions. [2022-07-19 16:52:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:52:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 73 [2022-07-19 16:52:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:35,329 INFO L225 Difference]: With dead ends: 1256 [2022-07-19 16:52:35,329 INFO L226 Difference]: Without dead ends: 756 [2022-07-19 16:52:35,331 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:52:35,331 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 718 mSDsluCounter, 1718 mSDsCounter, 0 mSdLazyCounter, 4429 mSolverCounterSat, 154 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 802 SdHoareTripleChecker+Valid, 2519 SdHoareTripleChecker+Invalid, 4583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 154 IncrementalHoareTripleChecker+Valid, 4429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:35,331 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [802 Valid, 2519 Invalid, 4583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [154 Valid, 4429 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-07-19 16:52:35,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 756 states. [2022-07-19 16:52:35,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 756 to 570. [2022-07-19 16:52:35,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 447 states have (on average 1.604026845637584) internal successors, (717), 468 states have internal predecessors, (717), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 90 states have call predecessors, (93), 93 states have call successors, (93) [2022-07-19 16:52:35,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 908 transitions. [2022-07-19 16:52:35,392 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 908 transitions. Word has length 73 [2022-07-19 16:52:35,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:35,393 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 908 transitions. [2022-07-19 16:52:35,393 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.25) internal successors, (58), 6 states have internal predecessors, (58), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:52:35,393 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 908 transitions. [2022-07-19 16:52:35,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:52:35,394 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:35,394 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:35,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:52:35,394 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:35,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:35,395 INFO L85 PathProgramCache]: Analyzing trace with hash -789981491, now seen corresponding path program 1 times [2022-07-19 16:52:35,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:35,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1274933996] [2022-07-19 16:52:35,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:35,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:35,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:35,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:35,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:35,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:35,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:35,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:35,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:52:35,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:35,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:35,692 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1274933996] [2022-07-19 16:52:35,692 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1274933996] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:35,693 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:35,693 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:35,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57763147] [2022-07-19 16:52:35,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:35,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:35,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:35,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:35,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:35,694 INFO L87 Difference]: Start difference. First operand 570 states and 908 transitions. Second operand has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:52:42,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:42,454 INFO L93 Difference]: Finished difference Result 2072 states and 3474 transitions. [2022-07-19 16:52:42,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:52:42,454 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) Word has length 74 [2022-07-19 16:52:42,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:42,461 INFO L225 Difference]: With dead ends: 2072 [2022-07-19 16:52:42,461 INFO L226 Difference]: Without dead ends: 1580 [2022-07-19 16:52:42,462 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:52:42,463 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 4370 mSDsluCounter, 1600 mSDsCounter, 0 mSdLazyCounter, 5391 mSolverCounterSat, 1311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4460 SdHoareTripleChecker+Valid, 2477 SdHoareTripleChecker+Invalid, 6702 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1311 IncrementalHoareTripleChecker+Valid, 5391 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:42,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4460 Valid, 2477 Invalid, 6702 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1311 Valid, 5391 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-19 16:52:42,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1580 states. [2022-07-19 16:52:42,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1580 to 1088. [2022-07-19 16:52:42,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1088 states, 853 states have (on average 1.6389214536928487) internal successors, (1398), 883 states have internal predecessors, (1398), 190 states have call successors, (190), 43 states have call predecessors, (190), 44 states have return successors, (192), 174 states have call predecessors, (192), 185 states have call successors, (192) [2022-07-19 16:52:42,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1088 states to 1088 states and 1780 transitions. [2022-07-19 16:52:42,548 INFO L78 Accepts]: Start accepts. Automaton has 1088 states and 1780 transitions. Word has length 74 [2022-07-19 16:52:42,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:42,548 INFO L495 AbstractCegarLoop]: Abstraction has 1088 states and 1780 transitions. [2022-07-19 16:52:42,548 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.555555555555555) internal successors, (59), 7 states have internal predecessors, (59), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 4 states have call successors, (7) [2022-07-19 16:52:42,548 INFO L276 IsEmpty]: Start isEmpty. Operand 1088 states and 1780 transitions. [2022-07-19 16:52:42,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 16:52:42,551 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:42,551 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:42,551 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:52:42,552 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:42,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:42,552 INFO L85 PathProgramCache]: Analyzing trace with hash 120536424, now seen corresponding path program 1 times [2022-07-19 16:52:42,552 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:42,552 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [208736643] [2022-07-19 16:52:42,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:42,552 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:42,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:42,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:42,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:42,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:42,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:42,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:52:42,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:52:43,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:52:43,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:52:43,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:52:43,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:52:43,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:43,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:43,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:43,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [208736643] [2022-07-19 16:52:43,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [208736643] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:43,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:43,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 16:52:43,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762618631] [2022-07-19 16:52:43,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:43,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 16:52:43,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:43,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 16:52:43,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:52:43,095 INFO L87 Difference]: Start difference. First operand 1088 states and 1780 transitions. Second operand has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:52:53,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:53,559 INFO L93 Difference]: Finished difference Result 3347 states and 5634 transitions. [2022-07-19 16:52:53,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 16:52:53,560 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 112 [2022-07-19 16:52:53,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:53,579 INFO L225 Difference]: With dead ends: 3347 [2022-07-19 16:52:53,579 INFO L226 Difference]: Without dead ends: 2337 [2022-07-19 16:52:53,583 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-07-19 16:52:53,583 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 4405 mSDsluCounter, 4479 mSDsCounter, 0 mSdLazyCounter, 12266 mSolverCounterSat, 1948 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4418 SdHoareTripleChecker+Valid, 5515 SdHoareTripleChecker+Invalid, 14214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1948 IncrementalHoareTripleChecker+Valid, 12266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:53,583 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4418 Valid, 5515 Invalid, 14214 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1948 Valid, 12266 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-19 16:52:53,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2337 states. [2022-07-19 16:52:53,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2337 to 1567. [2022-07-19 16:52:53,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1567 states, 1216 states have (on average 1.6036184210526316) internal successors, (1950), 1248 states have internal predecessors, (1950), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 270 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-19 16:52:53,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1567 states to 1567 states and 2543 transitions. [2022-07-19 16:52:53,741 INFO L78 Accepts]: Start accepts. Automaton has 1567 states and 2543 transitions. Word has length 112 [2022-07-19 16:52:53,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:53,742 INFO L495 AbstractCegarLoop]: Abstraction has 1567 states and 2543 transitions. [2022-07-19 16:52:53,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 16 states have (on average 5.4375) internal successors, (87), 10 states have internal predecessors, (87), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:52:53,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1567 states and 2543 transitions. [2022-07-19 16:52:53,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:52:53,745 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:53,745 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:53,745 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 16:52:53,746 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:53,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:53,746 INFO L85 PathProgramCache]: Analyzing trace with hash -1145431995, now seen corresponding path program 1 times [2022-07-19 16:52:53,746 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:53,746 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023177861] [2022-07-19 16:52:53,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:53,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:53,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:53,845 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:53,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:53,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:53,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:53,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:53,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:54,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:54,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:54,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:54,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,195 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:52:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:52:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,216 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:52:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:52:54,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:52:54,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:54,244 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:52:54,244 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:54,244 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023177861] [2022-07-19 16:52:54,244 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1023177861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:54,244 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:54,244 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:52:54,244 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1331898379] [2022-07-19 16:52:54,244 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:54,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:52:54,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:54,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:52:54,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:52:54,246 INFO L87 Difference]: Start difference. First operand 1567 states and 2543 transitions. Second operand has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:53:00,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:00,005 INFO L93 Difference]: Finished difference Result 3685 states and 6119 transitions. [2022-07-19 16:53:00,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:53:00,006 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 114 [2022-07-19 16:53:00,006 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:00,013 INFO L225 Difference]: With dead ends: 3685 [2022-07-19 16:53:00,014 INFO L226 Difference]: Without dead ends: 2198 [2022-07-19 16:53:00,018 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:53:00,019 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 2774 mSDsluCounter, 2461 mSDsCounter, 0 mSdLazyCounter, 5213 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2774 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 6248 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 5213 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:00,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2774 Valid, 3315 Invalid, 6248 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 5213 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:53:00,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2198 states. [2022-07-19 16:53:00,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2198 to 1569. [2022-07-19 16:53:00,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1569 states, 1218 states have (on average 1.6026272577996716) internal successors, (1952), 1248 states have internal predecessors, (1952), 278 states have call successors, (278), 59 states have call predecessors, (278), 72 states have return successors, (315), 272 states have call predecessors, (315), 273 states have call successors, (315) [2022-07-19 16:53:00,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1569 states to 1569 states and 2545 transitions. [2022-07-19 16:53:00,189 INFO L78 Accepts]: Start accepts. Automaton has 1569 states and 2545 transitions. Word has length 114 [2022-07-19 16:53:00,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:00,190 INFO L495 AbstractCegarLoop]: Abstraction has 1569 states and 2545 transitions. [2022-07-19 16:53:00,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.357142857142857) internal successors, (89), 8 states have internal predecessors, (89), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:53:00,190 INFO L276 IsEmpty]: Start isEmpty. Operand 1569 states and 2545 transitions. [2022-07-19 16:53:00,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:53:00,192 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:00,193 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:00,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 16:53:00,193 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:00,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:00,193 INFO L85 PathProgramCache]: Analyzing trace with hash -949029147, now seen corresponding path program 1 times [2022-07-19 16:53:00,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:00,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1014258142] [2022-07-19 16:53:00,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:00,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:00,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:00,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:00,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:00,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,634 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:00,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,636 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:00,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:53:00,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:53:00,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:53:00,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:00,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:00,672 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1014258142] [2022-07-19 16:53:00,672 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1014258142] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:00,672 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:00,672 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 16:53:00,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890478920] [2022-07-19 16:53:00,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:00,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 16:53:00,673 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:00,673 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 16:53:00,673 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:53:00,673 INFO L87 Difference]: Start difference. First operand 1569 states and 2545 transitions. Second operand has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:53:08,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:08,897 INFO L93 Difference]: Finished difference Result 4311 states and 7167 transitions. [2022-07-19 16:53:08,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 16:53:08,897 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 114 [2022-07-19 16:53:08,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:08,908 INFO L225 Difference]: With dead ends: 4311 [2022-07-19 16:53:08,908 INFO L226 Difference]: Without dead ends: 2822 [2022-07-19 16:53:08,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 16:53:08,913 INFO L413 NwaCegarLoop]: 1077 mSDtfsCounter, 3718 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 7196 mSolverCounterSat, 1476 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3718 SdHoareTripleChecker+Valid, 3920 SdHoareTripleChecker+Invalid, 8672 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1476 IncrementalHoareTripleChecker+Valid, 7196 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:08,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3718 Valid, 3920 Invalid, 8672 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1476 Valid, 7196 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 16:53:08,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2822 states. [2022-07-19 16:53:09,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2822 to 2080. [2022-07-19 16:53:09,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2080 states, 1622 states have (on average 1.6011097410604191) internal successors, (2597), 1652 states have internal predecessors, (2597), 358 states have call successors, (358), 83 states have call predecessors, (358), 99 states have return successors, (410), 355 states have call predecessors, (410), 353 states have call successors, (410) [2022-07-19 16:53:09,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2080 states to 2080 states and 3365 transitions. [2022-07-19 16:53:09,158 INFO L78 Accepts]: Start accepts. Automaton has 2080 states and 3365 transitions. Word has length 114 [2022-07-19 16:53:09,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:09,158 INFO L495 AbstractCegarLoop]: Abstraction has 2080 states and 3365 transitions. [2022-07-19 16:53:09,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.933333333333334) internal successors, (89), 10 states have internal predecessors, (89), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:53:09,159 INFO L276 IsEmpty]: Start isEmpty. Operand 2080 states and 3365 transitions. [2022-07-19 16:53:09,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 16:53:09,162 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:09,162 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:09,162 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 16:53:09,162 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:09,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:09,163 INFO L85 PathProgramCache]: Analyzing trace with hash 429693419, now seen corresponding path program 1 times [2022-07-19 16:53:09,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:09,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1353400417] [2022-07-19 16:53:09,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:09,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:09,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:09,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:09,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:09,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:09,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:09,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:09,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:09,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:09,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:53:09,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:53:09,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,598 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:53:09,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:09,599 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:09,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:09,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1353400417] [2022-07-19 16:53:09,600 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1353400417] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:09,600 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:09,600 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:53:09,600 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160194594] [2022-07-19 16:53:09,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:09,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:53:09,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:09,601 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:53:09,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:53:09,601 INFO L87 Difference]: Start difference. First operand 2080 states and 3365 transitions. Second operand has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:53:22,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:22,669 INFO L93 Difference]: Finished difference Result 9003 states and 15715 transitions. [2022-07-19 16:53:22,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 16:53:22,670 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 117 [2022-07-19 16:53:22,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:22,696 INFO L225 Difference]: With dead ends: 9003 [2022-07-19 16:53:22,697 INFO L226 Difference]: Without dead ends: 6993 [2022-07-19 16:53:22,708 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 515 ImplicationChecksByTransitivity, 2.6s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 16:53:22,709 INFO L413 NwaCegarLoop]: 981 mSDtfsCounter, 7528 mSDsluCounter, 2131 mSDsCounter, 0 mSdLazyCounter, 5994 mSolverCounterSat, 3813 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7528 SdHoareTripleChecker+Valid, 3112 SdHoareTripleChecker+Invalid, 9807 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3813 IncrementalHoareTripleChecker+Valid, 5994 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:22,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7528 Valid, 3112 Invalid, 9807 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3813 Valid, 5994 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 16:53:22,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6993 states. [2022-07-19 16:53:23,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6993 to 5370. [2022-07-19 16:53:23,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5370 states, 4165 states have (on average 1.5721488595438176) internal successors, (6548), 4249 states have internal predecessors, (6548), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 922 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-19 16:53:23,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5370 states to 5370 states and 8798 transitions. [2022-07-19 16:53:23,316 INFO L78 Accepts]: Start accepts. Automaton has 5370 states and 8798 transitions. Word has length 117 [2022-07-19 16:53:23,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:23,316 INFO L495 AbstractCegarLoop]: Abstraction has 5370 states and 8798 transitions. [2022-07-19 16:53:23,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.076923076923077) internal successors, (92), 9 states have internal predecessors, (92), 5 states have call successors, (13), 6 states have call predecessors, (13), 5 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-07-19 16:53:23,317 INFO L276 IsEmpty]: Start isEmpty. Operand 5370 states and 8798 transitions. [2022-07-19 16:53:23,319 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 16:53:23,319 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:23,319 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:23,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 16:53:23,320 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:23,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:23,320 INFO L85 PathProgramCache]: Analyzing trace with hash -1169029799, now seen corresponding path program 1 times [2022-07-19 16:53:23,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:23,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [630550259] [2022-07-19 16:53:23,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:23,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:23,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:23,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:23,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:23,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:23,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:23,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:23,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:23,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:23,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:23,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:53:23,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:53:23,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:53:23,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:23,809 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:23,809 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:23,809 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [630550259] [2022-07-19 16:53:23,809 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [630550259] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:23,809 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:23,809 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:53:23,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103356455] [2022-07-19 16:53:23,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:23,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:53:23,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:23,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:53:23,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:53:23,810 INFO L87 Difference]: Start difference. First operand 5370 states and 8798 transitions. Second operand has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:53:30,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:30,203 INFO L93 Difference]: Finished difference Result 12325 states and 20768 transitions. [2022-07-19 16:53:30,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:53:30,206 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) Word has length 118 [2022-07-19 16:53:30,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:30,234 INFO L225 Difference]: With dead ends: 12325 [2022-07-19 16:53:30,234 INFO L226 Difference]: Without dead ends: 7035 [2022-07-19 16:53:30,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:53:30,251 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 2766 mSDsluCounter, 2421 mSDsCounter, 0 mSdLazyCounter, 5162 mSolverCounterSat, 1046 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2766 SdHoareTripleChecker+Valid, 3279 SdHoareTripleChecker+Invalid, 6208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1046 IncrementalHoareTripleChecker+Valid, 5162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:30,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2766 Valid, 3279 Invalid, 6208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1046 Valid, 5162 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:53:30,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7035 states. [2022-07-19 16:53:30,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7035 to 5382. [2022-07-19 16:53:30,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5382 states, 4177 states have (on average 1.5705051472348575) internal successors, (6560), 4249 states have internal predecessors, (6560), 924 states have call successors, (924), 231 states have call predecessors, (924), 280 states have return successors, (1326), 934 states have call predecessors, (1326), 919 states have call successors, (1326) [2022-07-19 16:53:30,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5382 states to 5382 states and 8810 transitions. [2022-07-19 16:53:30,920 INFO L78 Accepts]: Start accepts. Automaton has 5382 states and 8810 transitions. Word has length 118 [2022-07-19 16:53:30,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:30,920 INFO L495 AbstractCegarLoop]: Abstraction has 5382 states and 8810 transitions. [2022-07-19 16:53:30,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.642857142857143) internal successors, (93), 8 states have internal predecessors, (93), 4 states have call successors, (13), 6 states have call predecessors, (13), 6 states have return successors, (12), 7 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-19 16:53:30,920 INFO L276 IsEmpty]: Start isEmpty. Operand 5382 states and 8810 transitions. [2022-07-19 16:53:30,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 16:53:30,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:30,923 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:30,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 16:53:30,923 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:30,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:30,924 INFO L85 PathProgramCache]: Analyzing trace with hash -1044496577, now seen corresponding path program 1 times [2022-07-19 16:53:30,924 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:30,924 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028909861] [2022-07-19 16:53:30,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:30,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:30,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:31,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,025 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:31,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:31,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:31,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:31,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:53:31,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:31,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 16:53:31,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:53:31,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:31,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:31,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:31,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028909861] [2022-07-19 16:53:31,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028909861] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:31,556 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:31,556 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 16:53:31,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15211281] [2022-07-19 16:53:31,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:31,556 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 16:53:31,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:31,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 16:53:31,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:53:31,557 INFO L87 Difference]: Start difference. First operand 5382 states and 8810 transitions. Second operand has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 16:53:52,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:52,036 INFO L93 Difference]: Finished difference Result 13784 states and 23202 transitions. [2022-07-19 16:53:52,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-19 16:53:52,037 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) Word has length 125 [2022-07-19 16:53:52,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:52,070 INFO L225 Difference]: With dead ends: 13784 [2022-07-19 16:53:52,071 INFO L226 Difference]: Without dead ends: 8354 [2022-07-19 16:53:52,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2249 ImplicationChecksByTransitivity, 7.1s TimeCoverageRelationStatistics Valid=1365, Invalid=5945, Unknown=0, NotChecked=0, Total=7310 [2022-07-19 16:53:52,094 INFO L413 NwaCegarLoop]: 1087 mSDtfsCounter, 9891 mSDsluCounter, 5862 mSDsCounter, 0 mSdLazyCounter, 16498 mSolverCounterSat, 3330 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9891 SdHoareTripleChecker+Valid, 6949 SdHoareTripleChecker+Invalid, 19828 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3330 IncrementalHoareTripleChecker+Valid, 16498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:52,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9891 Valid, 6949 Invalid, 19828 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3330 Valid, 16498 Invalid, 0 Unknown, 0 Unchecked, 12.2s Time] [2022-07-19 16:53:52,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8354 states. [2022-07-19 16:53:52,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8354 to 6682. [2022-07-19 16:53:52,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6682 states, 5257 states have (on average 1.5674338976602624) internal successors, (8240), 5345 states have internal predecessors, (8240), 1084 states have call successors, (1084), 271 states have call predecessors, (1084), 340 states have return successors, (1570), 1098 states have call predecessors, (1570), 1079 states have call successors, (1570) [2022-07-19 16:53:52,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6682 states to 6682 states and 10894 transitions. [2022-07-19 16:53:52,921 INFO L78 Accepts]: Start accepts. Automaton has 6682 states and 10894 transitions. Word has length 125 [2022-07-19 16:53:52,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:52,921 INFO L495 AbstractCegarLoop]: Abstraction has 6682 states and 10894 transitions. [2022-07-19 16:53:52,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.454545454545454) internal successors, (98), 17 states have internal predecessors, (98), 8 states have call successors, (14), 6 states have call predecessors, (14), 8 states have return successors, (13), 8 states have call predecessors, (13), 8 states have call successors, (13) [2022-07-19 16:53:52,921 INFO L276 IsEmpty]: Start isEmpty. Operand 6682 states and 10894 transitions. [2022-07-19 16:53:52,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 16:53:52,924 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:52,924 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:52,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 16:53:52,925 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:52,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:52,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1924335167, now seen corresponding path program 1 times [2022-07-19 16:53:52,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:52,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604826367] [2022-07-19 16:53:52,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:52,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:53,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:53,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:53,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:53,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:53,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:53,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:53,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:53:53,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:53:53,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,395 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:53,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:53:53,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:53:53,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:53,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:53:53,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:53,431 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604826367] [2022-07-19 16:53:53,431 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604826367] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:53,431 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:53,431 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:53:53,431 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1317425468] [2022-07-19 16:53:53,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:53,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:53:53,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:53,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:53:53,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:53:53,434 INFO L87 Difference]: Start difference. First operand 6682 states and 10894 transitions. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 16:54:08,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:08,172 INFO L93 Difference]: Finished difference Result 21400 states and 36284 transitions. [2022-07-19 16:54:08,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 16:54:08,173 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) Word has length 126 [2022-07-19 16:54:08,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:08,235 INFO L225 Difference]: With dead ends: 21400 [2022-07-19 16:54:08,235 INFO L226 Difference]: Without dead ends: 14798 [2022-07-19 16:54:08,264 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 16:54:08,264 INFO L413 NwaCegarLoop]: 856 mSDtfsCounter, 7258 mSDsluCounter, 2996 mSDsCounter, 0 mSdLazyCounter, 9005 mSolverCounterSat, 2822 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7258 SdHoareTripleChecker+Valid, 3852 SdHoareTripleChecker+Invalid, 11827 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2822 IncrementalHoareTripleChecker+Valid, 9005 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:08,264 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7258 Valid, 3852 Invalid, 11827 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2822 Valid, 9005 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-19 16:54:08,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14798 states. [2022-07-19 16:54:09,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14798 to 12054. [2022-07-19 16:54:09,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12054 states, 9509 states have (on average 1.5558944158165948) internal successors, (14795), 9660 states have internal predecessors, (14795), 1846 states have call successors, (1846), 489 states have call predecessors, (1846), 698 states have return successors, (2977), 1959 states have call predecessors, (2977), 1841 states have call successors, (2977) [2022-07-19 16:54:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12054 states to 12054 states and 19618 transitions. [2022-07-19 16:54:09,691 INFO L78 Accepts]: Start accepts. Automaton has 12054 states and 19618 transitions. Word has length 126 [2022-07-19 16:54:09,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:09,692 INFO L495 AbstractCegarLoop]: Abstraction has 12054 states and 19618 transitions. [2022-07-19 16:54:09,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 12 states have internal predecessors, (99), 7 states have call successors, (14), 6 states have call predecessors, (14), 7 states have return successors, (13), 8 states have call predecessors, (13), 7 states have call successors, (13) [2022-07-19 16:54:09,692 INFO L276 IsEmpty]: Start isEmpty. Operand 12054 states and 19618 transitions. [2022-07-19 16:54:09,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:54:09,695 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:09,695 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:09,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 16:54:09,695 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:09,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:09,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1163618173, now seen corresponding path program 1 times [2022-07-19 16:54:09,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:09,696 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252800284] [2022-07-19 16:54:09,696 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:09,696 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:09,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,779 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:09,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:09,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:09,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:09,987 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:09,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:10,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:10,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:54:10,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:54:10,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:10,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:54:10,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:10,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:54:10,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:10,173 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:54:10,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:10,174 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252800284] [2022-07-19 16:54:10,174 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252800284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:10,174 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:10,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:54:10,174 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811260035] [2022-07-19 16:54:10,174 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:10,175 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:54:10,175 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:10,175 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:54:10,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:54:10,176 INFO L87 Difference]: Start difference. First operand 12054 states and 19618 transitions. Second operand has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:54:26,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:26,965 INFO L93 Difference]: Finished difference Result 37390 states and 62555 transitions. [2022-07-19 16:54:26,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 16:54:26,966 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 131 [2022-07-19 16:54:26,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:27,079 INFO L225 Difference]: With dead ends: 37390 [2022-07-19 16:54:27,080 INFO L226 Difference]: Without dead ends: 25417 [2022-07-19 16:54:27,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 788 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2022-07-19 16:54:27,129 INFO L413 NwaCegarLoop]: 1742 mSDtfsCounter, 5288 mSDsluCounter, 3464 mSDsCounter, 0 mSdLazyCounter, 10198 mSolverCounterSat, 2768 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5288 SdHoareTripleChecker+Valid, 5206 SdHoareTripleChecker+Invalid, 12966 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2768 IncrementalHoareTripleChecker+Valid, 10198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:27,130 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5288 Valid, 5206 Invalid, 12966 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2768 Valid, 10198 Invalid, 0 Unknown, 0 Unchecked, 9.8s Time] [2022-07-19 16:54:27,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25417 states. [2022-07-19 16:54:29,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25417 to 20951. [2022-07-19 16:54:29,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20951 states, 16648 states have (on average 1.5594065353195579) internal successors, (25961), 16850 states have internal predecessors, (25961), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-19 16:54:29,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20951 states to 20951 states and 34078 transitions. [2022-07-19 16:54:29,729 INFO L78 Accepts]: Start accepts. Automaton has 20951 states and 34078 transitions. Word has length 131 [2022-07-19 16:54:29,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:29,729 INFO L495 AbstractCegarLoop]: Abstraction has 20951 states and 34078 transitions. [2022-07-19 16:54:29,729 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 7.142857142857143) internal successors, (100), 9 states have internal predecessors, (100), 5 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-07-19 16:54:29,729 INFO L276 IsEmpty]: Start isEmpty. Operand 20951 states and 34078 transitions. [2022-07-19 16:54:29,732 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:54:29,733 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:29,733 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:29,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 16:54:29,733 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:29,733 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:29,733 INFO L85 PathProgramCache]: Analyzing trace with hash 222585221, now seen corresponding path program 1 times [2022-07-19 16:54:29,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:29,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [975542176] [2022-07-19 16:54:29,734 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:29,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:29,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:29,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:29,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:29,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:29,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:30,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:30,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:30,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:30,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:54:30,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:54:30,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:30,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:54:30,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:30,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:54:30,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:30,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-19 16:54:30,286 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:30,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [975542176] [2022-07-19 16:54:30,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [975542176] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:30,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:30,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:54:30,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [983543514] [2022-07-19 16:54:30,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:30,287 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:54:30,287 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:30,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:54:30,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=194, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:54:30,288 INFO L87 Difference]: Start difference. First operand 20951 states and 34078 transitions. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 12 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:54:45,547 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:45,547 INFO L93 Difference]: Finished difference Result 47082 states and 78415 transitions. [2022-07-19 16:54:45,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 16:54:45,548 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 12 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-07-19 16:54:45,548 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:45,680 INFO L225 Difference]: With dead ends: 47082 [2022-07-19 16:54:45,680 INFO L226 Difference]: Without dead ends: 26211 [2022-07-19 16:54:45,873 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 471 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=477, Invalid=1245, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 16:54:45,873 INFO L413 NwaCegarLoop]: 867 mSDtfsCounter, 6132 mSDsluCounter, 2445 mSDsCounter, 0 mSdLazyCounter, 8422 mSolverCounterSat, 2903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6132 SdHoareTripleChecker+Valid, 3312 SdHoareTripleChecker+Invalid, 11325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2903 IncrementalHoareTripleChecker+Valid, 8422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:45,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6132 Valid, 3312 Invalid, 11325 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2903 Valid, 8422 Invalid, 0 Unknown, 0 Unchecked, 9.1s Time] [2022-07-19 16:54:45,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26211 states. [2022-07-19 16:54:48,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26211 to 20987. [2022-07-19 16:54:48,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20987 states, 16684 states have (on average 1.5581994725485495) internal successors, (25997), 16886 states have internal predecessors, (25997), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-19 16:54:48,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20987 states to 20987 states and 34114 transitions. [2022-07-19 16:54:48,398 INFO L78 Accepts]: Start accepts. Automaton has 20987 states and 34114 transitions. Word has length 131 [2022-07-19 16:54:48,399 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:48,399 INFO L495 AbstractCegarLoop]: Abstraction has 20987 states and 34114 transitions. [2022-07-19 16:54:48,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 12 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 6 states have return successors, (14), 7 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:54:48,399 INFO L276 IsEmpty]: Start isEmpty. Operand 20987 states and 34114 transitions. [2022-07-19 16:54:48,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 16:54:48,402 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:48,402 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:48,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 16:54:48,402 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:48,403 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:48,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1727751487, now seen corresponding path program 1 times [2022-07-19 16:54:48,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:48,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736500769] [2022-07-19 16:54:48,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:48,403 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:48,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:48,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,496 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:48,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:48,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:48,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:48,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:54:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:48,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:54:48,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:48,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:54:48,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:54:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 16:54:49,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736500769] [2022-07-19 16:54:49,025 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736500769] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:54:49,025 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2061319031] [2022-07-19 16:54:49,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:49,026 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:54:49,026 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:49,027 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:54:49,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:54:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:49,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:54:49,287 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:54:49,498 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:54:49,499 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:54:49,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2061319031] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:49,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:54:49,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 25 [2022-07-19 16:54:49,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070757525] [2022-07-19 16:54:49,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:49,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:54:49,500 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:49,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:54:49,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:54:49,501 INFO L87 Difference]: Start difference. First operand 20987 states and 34114 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:54:52,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:52,495 INFO L93 Difference]: Finished difference Result 21148 states and 34387 transitions. [2022-07-19 16:54:52,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:54:52,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 134 [2022-07-19 16:54:52,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:52,578 INFO L225 Difference]: With dead ends: 21148 [2022-07-19 16:54:52,578 INFO L226 Difference]: Without dead ends: 21133 [2022-07-19 16:54:52,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 115 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:54:52,600 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 856 mSDsluCounter, 1396 mSDsCounter, 0 mSdLazyCounter, 405 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 864 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 405 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:52,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [864 Valid, 2289 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 405 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:54:52,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21133 states. [2022-07-19 16:54:55,078 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21133 to 20999. [2022-07-19 16:54:55,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20999 states, 16696 states have (on average 1.5577982750359367) internal successors, (26009), 16898 states have internal predecessors, (26009), 3120 states have call successors, (3120), 823 states have call predecessors, (3120), 1182 states have return successors, (4997), 3365 states have call predecessors, (4997), 3115 states have call successors, (4997) [2022-07-19 16:54:55,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20999 states to 20999 states and 34126 transitions. [2022-07-19 16:54:55,179 INFO L78 Accepts]: Start accepts. Automaton has 20999 states and 34126 transitions. Word has length 134 [2022-07-19 16:54:55,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:55,180 INFO L495 AbstractCegarLoop]: Abstraction has 20999 states and 34126 transitions. [2022-07-19 16:54:55,180 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-19 16:54:55,180 INFO L276 IsEmpty]: Start isEmpty. Operand 20999 states and 34126 transitions. [2022-07-19 16:54:55,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 16:54:55,182 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:55,183 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:54:55,201 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:54:55,394 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,SelfDestructingSolverStorable26 [2022-07-19 16:54:55,394 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:55,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:55,394 INFO L85 PathProgramCache]: Analyzing trace with hash 4805020, now seen corresponding path program 1 times [2022-07-19 16:54:55,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:55,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [258770028] [2022-07-19 16:54:55,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:55,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:55,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,492 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,494 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:54:55,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:54:55,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,684 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:55,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:55,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:55,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:54:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:54:55,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:54:55,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:54:55,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:54:55,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:54:55,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 16:54:55,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:55,838 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:54:55,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:55,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [258770028] [2022-07-19 16:54:55,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [258770028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:55,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:55,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:54:55,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1796903767] [2022-07-19 16:54:55,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:55,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:54:55,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:55,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:54:55,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:54:55,840 INFO L87 Difference]: Start difference. First operand 20999 states and 34126 transitions. Second operand has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 16:55:13,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:13,927 INFO L93 Difference]: Finished difference Result 60767 states and 104563 transitions. [2022-07-19 16:55:13,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-19 16:55:13,927 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) Word has length 140 [2022-07-19 16:55:13,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:14,135 INFO L225 Difference]: With dead ends: 60767 [2022-07-19 16:55:14,135 INFO L226 Difference]: Without dead ends: 39854 [2022-07-19 16:55:14,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1213 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=664, Invalid=2996, Unknown=0, NotChecked=0, Total=3660 [2022-07-19 16:55:14,237 INFO L413 NwaCegarLoop]: 1094 mSDtfsCounter, 6787 mSDsluCounter, 2633 mSDsCounter, 0 mSdLazyCounter, 6149 mSolverCounterSat, 2752 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6800 SdHoareTripleChecker+Valid, 3727 SdHoareTripleChecker+Invalid, 8901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2752 IncrementalHoareTripleChecker+Valid, 6149 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:14,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6800 Valid, 3727 Invalid, 8901 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2752 Valid, 6149 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-19 16:55:14,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39854 states. [2022-07-19 16:55:18,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39854 to 32910. [2022-07-19 16:55:18,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32910 states, 26045 states have (on average 1.5431368784795547) internal successors, (40191), 26433 states have internal predecessors, (40191), 4942 states have call successors, (4942), 1375 states have call predecessors, (4942), 1922 states have return successors, (8800), 5277 states have call predecessors, (8800), 4937 states have call successors, (8800) [2022-07-19 16:55:18,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32910 states to 32910 states and 53933 transitions. [2022-07-19 16:55:18,625 INFO L78 Accepts]: Start accepts. Automaton has 32910 states and 53933 transitions. Word has length 140 [2022-07-19 16:55:18,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:18,626 INFO L495 AbstractCegarLoop]: Abstraction has 32910 states and 53933 transitions. [2022-07-19 16:55:18,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 8.583333333333334) internal successors, (103), 7 states have internal predecessors, (103), 5 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 4 states have call successors, (16) [2022-07-19 16:55:18,626 INFO L276 IsEmpty]: Start isEmpty. Operand 32910 states and 53933 transitions. [2022-07-19 16:55:18,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 16:55:18,629 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:18,629 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:55:18,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 16:55:18,630 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:18,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:18,630 INFO L85 PathProgramCache]: Analyzing trace with hash 111319295, now seen corresponding path program 1 times [2022-07-19 16:55:18,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:18,630 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [999850535] [2022-07-19 16:55:18,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:18,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:18,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:18,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:18,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:18,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:18,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:19,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:19,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:19,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:55:19,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 16:55:19,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:19,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:55:19,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:19,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:55:19,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 16:55:19,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:55:19,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-19 16:55:19,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [999850535] [2022-07-19 16:55:19,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [999850535] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:55:19,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [605664090] [2022-07-19 16:55:19,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:19,308 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:55:19,308 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:55:19,309 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:55:19,310 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:55:19,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:55:19,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:55:20,141 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-07-19 16:55:20,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:55:20,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [605664090] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:20,141 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:55:20,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2022-07-19 16:55:20,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463703786] [2022-07-19 16:55:20,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:20,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:55:20,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:20,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:55:20,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:55:20,143 INFO L87 Difference]: Start difference. First operand 32910 states and 53933 transitions. Second operand has 8 states, 8 states have (on average 14.125) internal successors, (113), 7 states have internal predecessors, (113), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17)