./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product30.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_product30.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 b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:54:43,828 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:54:43,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:54:43,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:54:43,859 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:54:43,860 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:54:43,862 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:54:43,864 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:54:43,865 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:54:43,868 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:54:43,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:54:43,871 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:54:43,871 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:54:43,873 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:54:43,874 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:54:43,875 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:54:43,875 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:54:43,877 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:54:43,879 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:54:43,883 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:54:43,884 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:54:43,885 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:54:43,885 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:54:43,886 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:54:43,887 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:54:43,892 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:54:43,892 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:54:43,893 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:54:43,894 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:54:43,894 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:54:43,895 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:54:43,895 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:54:43,896 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:54:43,897 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:54:43,897 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:54:43,898 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:54:43,898 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:54:43,898 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:54:43,899 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:54:43,899 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:54:43,900 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:54:43,901 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:54:43,902 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:54:43,930 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:54:43,930 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:54:43,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:54:43,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:54:43,931 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:54:43,931 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:54:43,932 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:54:43,932 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:54:43,932 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:54:43,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:54:43,933 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:54:43,933 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:54:43,933 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:54:43,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:54:43,934 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:54:43,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:54:43,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:54:43,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:54:43,935 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:54:43,935 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:54:43,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:54:43,936 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:54:43,937 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:54:43,937 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b3416b3e017f399176a4f7a837e050107ced7390b025fd07360efb8b6075a94d [2022-07-19 16:54:44,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:54:44,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:54:44,177 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:54:44,178 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:54:44,178 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:54:44,179 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-07-19 16:54:44,214 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee83b293a/6f2d5147f69747c7a9dbd959ca357101/FLAG73c48bb11 [2022-07-19 16:54:44,650 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:54:44,651 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product30.cil.c [2022-07-19 16:54:44,671 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee83b293a/6f2d5147f69747c7a9dbd959ca357101/FLAG73c48bb11 [2022-07-19 16:54:44,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee83b293a/6f2d5147f69747c7a9dbd959ca357101 [2022-07-19 16:54:44,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:54:44,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:54:44,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:54:44,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:54:44,685 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:54:44,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:54:44" (1/1) ... [2022-07-19 16:54:44,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a75ec53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:44, skipping insertion in model container [2022-07-19 16:54:44,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:54:44" (1/1) ... [2022-07-19 16:54:44,690 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:54:44,762 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:54:44,969 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_product30.cil.c[10611,10624] [2022-07-19 16:54:45,118 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:54:45,129 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:54:45,155 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_product30.cil.c[10611,10624] [2022-07-19 16:54:45,228 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:54:45,266 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:54:45,267 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45 WrapperNode [2022-07-19 16:54:45,267 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:54:45,268 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:54:45,268 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:54:45,268 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:54:45,299 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,330 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,377 INFO L137 Inliner]: procedures = 95, calls = 347, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 920 [2022-07-19 16:54:45,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:54:45,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:54:45,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:54:45,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:54:45,399 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,399 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,404 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,404 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,416 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,425 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,428 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,433 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:54:45,433 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:54:45,433 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:54:45,433 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:54:45,434 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (1/1) ... [2022-07-19 16:54:45,451 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:54:45,459 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:54:45,477 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 16:54:45,511 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 16:54:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:54:45,523 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-19 16:54:45,523 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-19 16:54:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:54:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:54:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:54:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:54:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:54:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:54:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:54:45,524 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:54:45,524 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:54:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-19 16:54:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:54:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:54:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:54:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:54:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:54:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:54:45,525 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:54:45,525 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:54:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:54:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:54:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:54:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:54:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:54:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:54:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-19 16:54:45,526 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-19 16:54:45,526 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:54:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:54:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:54:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:54:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:54:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:54:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:54:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:54:45,527 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:54:45,527 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:54:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:54:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-19 16:54:45,528 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-19 16:54:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:54:45,528 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:54:45,528 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:54:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:54:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:54:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:54:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-19 16:54:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-19 16:54:45,529 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:54:45,529 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:54:45,530 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:54:45,530 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:54:45,657 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:54:45,658 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:54:46,293 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:54:46,305 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:54:46,305 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:54:46,307 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:54:46 BoogieIcfgContainer [2022-07-19 16:54:46,308 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:54:46,310 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:54:46,310 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:54:46,312 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:54:46,312 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:54:44" (1/3) ... [2022-07-19 16:54:46,312 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ea31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:54:46, skipping insertion in model container [2022-07-19 16:54:46,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:54:45" (2/3) ... [2022-07-19 16:54:46,313 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@357ea31d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:54:46, skipping insertion in model container [2022-07-19 16:54:46,313 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:54:46" (3/3) ... [2022-07-19 16:54:46,314 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product30.cil.c [2022-07-19 16:54:46,322 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:54:46,323 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:54:46,365 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:54:46,369 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@7dd8e4c3, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@28c37e80 [2022-07-19 16:54:46,370 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:54:46,374 INFO L276 IsEmpty]: Start isEmpty. Operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 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 16:54:46,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2022-07-19 16:54:46,408 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:46,408 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 16:54:46,409 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:46,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:46,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1129781487, now seen corresponding path program 1 times [2022-07-19 16:54:46,420 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:46,420 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [766563982] [2022-07-19 16:54:46,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:46,421 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:46,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:46,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:46,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:46,787 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:46,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:46,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:54:46,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:46,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:54:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:47,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:47,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:47,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:47,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:47,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:54:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:47,015 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 16:54:47,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:47,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [766563982] [2022-07-19 16:54:47,016 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [766563982] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:47,016 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:47,016 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:54:47,017 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292580965] [2022-07-19 16:54:47,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:47,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:54:47,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:47,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:54:47,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:54:47,038 INFO L87 Difference]: Start difference. First operand has 581 states, 456 states have (on average 1.6929824561403508) internal successors, (772), 479 states have internal predecessors, (772), 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 16:54:50,612 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:50,613 INFO L93 Difference]: Finished difference Result 1305 states and 2205 transitions. [2022-07-19 16:54:50,614 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:54:50,615 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 16:54:50,616 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:50,629 INFO L225 Difference]: With dead ends: 1305 [2022-07-19 16:54:50,630 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:54:50,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:54:50,640 INFO L413 NwaCegarLoop]: 876 mSDtfsCounter, 1158 mSDsluCounter, 853 mSDsCounter, 0 mSdLazyCounter, 2212 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1242 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 2508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:50,640 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1242 Valid, 1729 Invalid, 2508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2212 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-19 16:54:50,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:54:50,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:54:50,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6888888888888889) internal successors, (760), 471 states have internal predecessors, (760), 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 16:54:50,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 951 transitions. [2022-07-19 16:54:50,738 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 951 transitions. Word has length 60 [2022-07-19 16:54:50,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:50,739 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 951 transitions. [2022-07-19 16:54:50,739 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 16:54:50,739 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 951 transitions. [2022-07-19 16:54:50,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-19 16:54:50,742 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:50,742 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 16:54:50,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:54:50,742 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:50,743 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:50,743 INFO L85 PathProgramCache]: Analyzing trace with hash -1483396888, now seen corresponding path program 1 times [2022-07-19 16:54:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:50,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340591927] [2022-07-19 16:54:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:50,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:50,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:50,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:50,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:54:51,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:51,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:51,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,038 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:54:51,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:51,040 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 16:54:51,040 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:51,041 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340591927] [2022-07-19 16:54:51,041 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340591927] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:51,041 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:51,041 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:54:51,041 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762818893] [2022-07-19 16:54:51,041 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:51,042 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:54:51,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:51,043 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:54:51,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:54:51,043 INFO L87 Difference]: Start difference. First operand 573 states and 951 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 16:54:54,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:54,250 INFO L93 Difference]: Finished difference Result 1291 states and 2171 transitions. [2022-07-19 16:54:54,254 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:54:54,254 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 16:54:54,255 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:54,278 INFO L225 Difference]: With dead ends: 1291 [2022-07-19 16:54:54,278 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:54:54,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 16:54:54,296 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1157 mSDsluCounter, 822 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 300 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2510 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 300 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:54,297 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 1686 Invalid, 2510 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [300 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:54:54,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:54:54,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:54:54,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6866666666666668) internal successors, (759), 471 states have internal predecessors, (759), 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 16:54:54,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 950 transitions. [2022-07-19 16:54:54,390 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 950 transitions. Word has length 63 [2022-07-19 16:54:54,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:54,390 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 950 transitions. [2022-07-19 16:54:54,390 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 16:54:54,390 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 950 transitions. [2022-07-19 16:54:54,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-19 16:54:54,392 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:54,392 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 16:54:54,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:54:54,392 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:54,392 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:54,393 INFO L85 PathProgramCache]: Analyzing trace with hash -2110645953, now seen corresponding path program 1 times [2022-07-19 16:54:54,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:54,393 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514678033] [2022-07-19 16:54:54,393 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:54,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:54,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:54,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:54,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:54:54,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:54:54,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:54,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,675 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:54,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,676 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:54:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:54,678 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 16:54:54,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:54,678 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514678033] [2022-07-19 16:54:54,678 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [514678033] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:54,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:54,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:54:54,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882845902] [2022-07-19 16:54:54,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:54,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:54:54,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:54,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:54:54,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:54:54,680 INFO L87 Difference]: Start difference. First operand 573 states and 950 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 16:54:58,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:54:58,213 INFO L93 Difference]: Finished difference Result 1291 states and 2170 transitions. [2022-07-19 16:54:58,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:54:58,214 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 16:54:58,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:54:58,218 INFO L225 Difference]: With dead ends: 1291 [2022-07-19 16:54:58,218 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:54:58,220 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 16:54:58,221 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 696 mSDsluCounter, 826 mSDsCounter, 0 mSdLazyCounter, 2390 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 2538 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 2390 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:54:58,221 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 1688 Invalid, 2538 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 2390 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:54:58,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:54:58,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:54:58,257 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6844444444444444) internal successors, (758), 471 states have internal predecessors, (758), 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 16:54:58,259 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 949 transitions. [2022-07-19 16:54:58,260 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 949 transitions. Word has length 64 [2022-07-19 16:54:58,260 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:54:58,260 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 949 transitions. [2022-07-19 16:54:58,260 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 16:54:58,261 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 949 transitions. [2022-07-19 16:54:58,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-19 16:54:58,262 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:54:58,262 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 16:54:58,262 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:54:58,262 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:54:58,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:54:58,263 INFO L85 PathProgramCache]: Analyzing trace with hash -1042691004, now seen corresponding path program 1 times [2022-07-19 16:54:58,263 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:54:58,263 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720535963] [2022-07-19 16:54:58,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:54:58,264 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:54:58,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:54:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:58,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:54:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:54:58,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:58,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:54:58,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:54:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:54:58,538 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 16:54:58,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:54:58,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720535963] [2022-07-19 16:54:58,539 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720535963] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:54:58,539 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:54:58,539 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:54:58,539 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [476990459] [2022-07-19 16:54:58,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:54:58,540 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:54:58,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:54:58,540 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:54:58,540 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:54:58,541 INFO L87 Difference]: Start difference. First operand 573 states and 949 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 16:55:01,880 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:01,880 INFO L93 Difference]: Finished difference Result 1291 states and 2169 transitions. [2022-07-19 16:55:01,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:55:01,881 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 16:55:01,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:01,884 INFO L225 Difference]: With dead ends: 1291 [2022-07-19 16:55:01,884 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:01,886 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 16:55:01,887 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 693 mSDsluCounter, 830 mSDsCounter, 0 mSdLazyCounter, 2388 mSolverCounterSat, 147 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 777 SdHoareTripleChecker+Valid, 1694 SdHoareTripleChecker+Invalid, 2535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 147 IncrementalHoareTripleChecker+Valid, 2388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:01,887 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [777 Valid, 1694 Invalid, 2535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [147 Valid, 2388 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 16:55:01,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:01,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:01,915 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6822222222222223) internal successors, (757), 471 states have internal predecessors, (757), 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 16:55:01,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 948 transitions. [2022-07-19 16:55:01,917 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 948 transitions. Word has length 65 [2022-07-19 16:55:01,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:01,918 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 948 transitions. [2022-07-19 16:55:01,918 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 16:55:01,918 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 948 transitions. [2022-07-19 16:55:01,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-19 16:55:01,919 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:01,919 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 16:55:01,919 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:55:01,919 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:01,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:01,920 INFO L85 PathProgramCache]: Analyzing trace with hash 1036980827, now seen corresponding path program 1 times [2022-07-19 16:55:01,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:01,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458278700] [2022-07-19 16:55:01,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:01,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:01,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:01,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:02,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:55:02,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:55:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:02,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:02,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:02,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:02,173 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 16:55:02,173 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:02,173 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458278700] [2022-07-19 16:55:02,173 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458278700] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:02,173 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:02,174 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:02,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507679112] [2022-07-19 16:55:02,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:02,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:02,176 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:02,176 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:02,176 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:02,176 INFO L87 Difference]: Start difference. First operand 573 states and 948 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 16:55:05,064 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:05,064 INFO L93 Difference]: Finished difference Result 1291 states and 2168 transitions. [2022-07-19 16:55:05,064 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:55:05,065 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 16:55:05,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:05,068 INFO L225 Difference]: With dead ends: 1291 [2022-07-19 16:55:05,068 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:05,070 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 16:55:05,071 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1142 mSDsluCounter, 832 mSDsCounter, 0 mSdLazyCounter, 2204 mSolverCounterSat, 296 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1226 SdHoareTripleChecker+Valid, 1701 SdHoareTripleChecker+Invalid, 2500 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 296 IncrementalHoareTripleChecker+Valid, 2204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:05,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1226 Valid, 1701 Invalid, 2500 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [296 Valid, 2204 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-07-19 16:55:05,085 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:05,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:05,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.68) internal successors, (756), 471 states have internal predecessors, (756), 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 16:55:05,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 947 transitions. [2022-07-19 16:55:05,117 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 947 transitions. Word has length 66 [2022-07-19 16:55:05,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:05,118 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 947 transitions. [2022-07-19 16:55:05,118 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 16:55:05,119 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 947 transitions. [2022-07-19 16:55:05,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-19 16:55:05,120 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:05,120 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 16:55:05,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:55:05,120 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:05,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:05,121 INFO L85 PathProgramCache]: Analyzing trace with hash 120137632, now seen corresponding path program 1 times [2022-07-19 16:55:05,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:05,122 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139431538] [2022-07-19 16:55:05,122 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:05,122 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:05,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:05,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:05,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:05,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:55:05,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:05,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:05,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:05,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:05,433 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 16:55:05,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:05,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139431538] [2022-07-19 16:55:05,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139431538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:05,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:05,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:05,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29454222] [2022-07-19 16:55:05,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:05,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:05,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:05,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:05,435 INFO L87 Difference]: Start difference. First operand 573 states and 947 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 16:55:08,855 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:08,855 INFO L93 Difference]: Finished difference Result 1251 states and 2092 transitions. [2022-07-19 16:55:08,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:08,856 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 16:55:08,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:08,859 INFO L225 Difference]: With dead ends: 1251 [2022-07-19 16:55:08,859 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:08,861 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:55:08,861 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 756 mSDsluCounter, 841 mSDsCounter, 0 mSdLazyCounter, 2362 mSolverCounterSat, 175 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1664 SdHoareTripleChecker+Invalid, 2537 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 175 IncrementalHoareTripleChecker+Valid, 2362 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:08,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1664 Invalid, 2537 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [175 Valid, 2362 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:55:08,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:08,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:08,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6688888888888889) internal successors, (751), 471 states have internal predecessors, (751), 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 16:55:08,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 942 transitions. [2022-07-19 16:55:08,893 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 942 transitions. Word has length 67 [2022-07-19 16:55:08,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:08,893 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 942 transitions. [2022-07-19 16:55:08,894 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 16:55:08,894 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 942 transitions. [2022-07-19 16:55:08,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-19 16:55:08,895 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:08,895 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 16:55:08,895 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:55:08,895 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:08,896 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:08,896 INFO L85 PathProgramCache]: Analyzing trace with hash -948333069, now seen corresponding path program 1 times [2022-07-19 16:55:08,896 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:08,896 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [249963347] [2022-07-19 16:55:08,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:08,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:08,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:08,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:08,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,001 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:09,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:09,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:55:09,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:09,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:09,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:09,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:09,189 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 16:55:09,190 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:09,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [249963347] [2022-07-19 16:55:09,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [249963347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:09,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:09,190 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:09,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135140779] [2022-07-19 16:55:09,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:09,191 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:09,191 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:09,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:09,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:09,191 INFO L87 Difference]: Start difference. First operand 573 states and 942 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 16:55:12,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:12,655 INFO L93 Difference]: Finished difference Result 1251 states and 2087 transitions. [2022-07-19 16:55:12,656 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:12,656 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 16:55:12,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:12,660 INFO L225 Difference]: With dead ends: 1251 [2022-07-19 16:55:12,661 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:12,663 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 16:55:12,666 INFO L413 NwaCegarLoop]: 810 mSDtfsCounter, 755 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2339 mSolverCounterSat, 176 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 839 SdHoareTripleChecker+Valid, 1627 SdHoareTripleChecker+Invalid, 2515 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 176 IncrementalHoareTripleChecker+Valid, 2339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:12,667 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [839 Valid, 1627 Invalid, 2515 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [176 Valid, 2339 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:55:12,668 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:12,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:12,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6577777777777778) internal successors, (746), 471 states have internal predecessors, (746), 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 16:55:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 937 transitions. [2022-07-19 16:55:12,724 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 937 transitions. Word has length 68 [2022-07-19 16:55:12,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:12,725 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 937 transitions. [2022-07-19 16:55:12,725 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 16:55:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 937 transitions. [2022-07-19 16:55:12,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-19 16:55:12,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:12,728 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 16:55:12,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:55:12,728 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:12,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:12,729 INFO L85 PathProgramCache]: Analyzing trace with hash -1954669627, now seen corresponding path program 1 times [2022-07-19 16:55:12,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:12,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483151526] [2022-07-19 16:55:12,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:12,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:12,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:12,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:12,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:12,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:12,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:55:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:12,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:13,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:13,004 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:13,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:13,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:13,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:13,007 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 16:55:13,007 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:13,007 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483151526] [2022-07-19 16:55:13,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483151526] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:13,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:13,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:13,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121830700] [2022-07-19 16:55:13,008 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:13,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:13,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:13,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:13,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:13,009 INFO L87 Difference]: Start difference. First operand 573 states and 937 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 16:55:16,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:16,066 INFO L93 Difference]: Finished difference Result 1251 states and 2082 transitions. [2022-07-19 16:55:16,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:16,066 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 16:55:16,066 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:16,069 INFO L225 Difference]: With dead ends: 1251 [2022-07-19 16:55:16,069 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:16,071 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 16:55:16,071 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 754 mSDsluCounter, 837 mSDsCounter, 0 mSdLazyCounter, 2322 mSolverCounterSat, 166 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 838 SdHoareTripleChecker+Valid, 1658 SdHoareTripleChecker+Invalid, 2488 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 166 IncrementalHoareTripleChecker+Valid, 2322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:16,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [838 Valid, 1658 Invalid, 2488 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [166 Valid, 2322 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:55:16,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:16,101 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6466666666666667) internal successors, (741), 471 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 16:55:16,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 932 transitions. [2022-07-19 16:55:16,104 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 932 transitions. Word has length 69 [2022-07-19 16:55:16,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:16,105 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 932 transitions. [2022-07-19 16:55:16,106 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 16:55:16,106 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 932 transitions. [2022-07-19 16:55:16,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:55:16,109 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:16,109 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 16:55:16,109 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:55:16,109 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:16,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:16,110 INFO L85 PathProgramCache]: Analyzing trace with hash -1034847752, now seen corresponding path program 1 times [2022-07-19 16:55:16,110 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:16,110 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642167862] [2022-07-19 16:55:16,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:16,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:16,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:16,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:16,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,339 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:55:16,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:16,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:16,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:16,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:16,354 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 16:55:16,354 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:16,354 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642167862] [2022-07-19 16:55:16,355 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642167862] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:16,355 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:16,355 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:16,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [697948884] [2022-07-19 16:55:16,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:16,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:16,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:16,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:16,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:16,356 INFO L87 Difference]: Start difference. First operand 573 states and 932 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 16:55:18,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:18,756 INFO L93 Difference]: Finished difference Result 1251 states and 2077 transitions. [2022-07-19 16:55:18,756 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:18,756 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 16:55:18,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:18,768 INFO L225 Difference]: With dead ends: 1251 [2022-07-19 16:55:18,769 INFO L226 Difference]: Without dead ends: 736 [2022-07-19 16:55:18,770 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 16:55:18,771 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1216 mSDsluCounter, 802 mSDsCounter, 0 mSdLazyCounter, 2135 mSolverCounterSat, 315 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1300 SdHoareTripleChecker+Valid, 1615 SdHoareTripleChecker+Invalid, 2450 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 315 IncrementalHoareTripleChecker+Valid, 2135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:18,771 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1300 Valid, 1615 Invalid, 2450 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [315 Valid, 2135 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-07-19 16:55:18,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 736 states. [2022-07-19 16:55:18,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 736 to 573. [2022-07-19 16:55:18,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 573 states, 450 states have (on average 1.6355555555555557) internal successors, (736), 471 states have internal predecessors, (736), 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 16:55:18,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 573 states to 573 states and 927 transitions. [2022-07-19 16:55:18,806 INFO L78 Accepts]: Start accepts. Automaton has 573 states and 927 transitions. Word has length 70 [2022-07-19 16:55:18,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:18,806 INFO L495 AbstractCegarLoop]: Abstraction has 573 states and 927 transitions. [2022-07-19 16:55:18,806 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 16:55:18,806 INFO L276 IsEmpty]: Start isEmpty. Operand 573 states and 927 transitions. [2022-07-19 16:55:18,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-19 16:55:18,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:18,807 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 16:55:18,807 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:55:18,808 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:18,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:18,808 INFO L85 PathProgramCache]: Analyzing trace with hash -90463079, now seen corresponding path program 1 times [2022-07-19 16:55:18,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:18,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540779053] [2022-07-19 16:55:18,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:18,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:18,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:18,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:18,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:18,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:18,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:55:19,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:19,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:19,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:19,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:19,127 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 16:55:19,128 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:19,128 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540779053] [2022-07-19 16:55:19,128 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540779053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:19,128 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:19,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:19,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [269825664] [2022-07-19 16:55:19,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:19,129 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:19,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:19,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:19,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:19,136 INFO L87 Difference]: Start difference. First operand 573 states and 927 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:22,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:22,437 INFO L93 Difference]: Finished difference Result 1266 states and 2092 transitions. [2022-07-19 16:55:22,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:55:22,438 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2022-07-19 16:55:22,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:22,441 INFO L225 Difference]: With dead ends: 1266 [2022-07-19 16:55:22,441 INFO L226 Difference]: Without dead ends: 757 [2022-07-19 16:55:22,443 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:22,443 INFO L413 NwaCegarLoop]: 830 mSDtfsCounter, 1220 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 2134 mSolverCounterSat, 307 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2441 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 307 IncrementalHoareTripleChecker+Valid, 2134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:22,443 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1638 Invalid, 2441 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [307 Valid, 2134 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:55:22,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 757 states. [2022-07-19 16:55:22,487 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 757 to 575. [2022-07-19 16:55:22,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6327433628318584) internal successors, (738), 473 states have internal predecessors, (738), 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 16:55:22,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 929 transitions. [2022-07-19 16:55:22,490 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 929 transitions. Word has length 70 [2022-07-19 16:55:22,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:22,490 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 929 transitions. [2022-07-19 16:55:22,490 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:22,490 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 929 transitions. [2022-07-19 16:55:22,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:55:22,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:22,492 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 16:55:22,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:55:22,492 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:22,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:22,492 INFO L85 PathProgramCache]: Analyzing trace with hash -533656598, now seen corresponding path program 1 times [2022-07-19 16:55:22,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:22,492 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819582082] [2022-07-19 16:55:22,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:22,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:22,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,638 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:22,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,644 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:22,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:55:22,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:22,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:22,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:22,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:22,816 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 16:55:22,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:22,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819582082] [2022-07-19 16:55:22,817 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819582082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:22,817 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:22,817 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:22,817 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61027287] [2022-07-19 16:55:22,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:22,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:22,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:22,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:22,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:22,818 INFO L87 Difference]: Start difference. First operand 575 states and 929 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 16:55:25,895 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:25,895 INFO L93 Difference]: Finished difference Result 1257 states and 2078 transitions. [2022-07-19 16:55:25,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-19 16:55:25,896 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 16:55:25,896 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:25,899 INFO L225 Difference]: With dead ends: 1257 [2022-07-19 16:55:25,899 INFO L226 Difference]: Without dead ends: 740 [2022-07-19 16:55:25,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-07-19 16:55:25,901 INFO L413 NwaCegarLoop]: 821 mSDtfsCounter, 1209 mSDsluCounter, 819 mSDsCounter, 0 mSdLazyCounter, 2120 mSolverCounterSat, 304 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1640 SdHoareTripleChecker+Invalid, 2424 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 304 IncrementalHoareTripleChecker+Valid, 2120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:25,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1640 Invalid, 2424 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [304 Valid, 2120 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-07-19 16:55:25,903 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 740 states. [2022-07-19 16:55:25,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 740 to 575. [2022-07-19 16:55:25,936 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 575 states, 452 states have (on average 1.6216814159292035) internal successors, (733), 473 states have internal predecessors, (733), 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 16:55:25,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 575 states to 575 states and 924 transitions. [2022-07-19 16:55:25,938 INFO L78 Accepts]: Start accepts. Automaton has 575 states and 924 transitions. Word has length 71 [2022-07-19 16:55:25,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:25,938 INFO L495 AbstractCegarLoop]: Abstraction has 575 states and 924 transitions. [2022-07-19 16:55:25,939 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 16:55:25,939 INFO L276 IsEmpty]: Start isEmpty. Operand 575 states and 924 transitions. [2022-07-19 16:55:25,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-19 16:55:25,940 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:25,940 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 16:55:25,940 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:55:25,940 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:25,940 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:25,940 INFO L85 PathProgramCache]: Analyzing trace with hash -1018314521, now seen corresponding path program 1 times [2022-07-19 16:55:25,941 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:25,941 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1564896744] [2022-07-19 16:55:25,941 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:25,941 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:25,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:26,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:26,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:26,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:55:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:26,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:26,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:26,258 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 16:55:26,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:26,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1564896744] [2022-07-19 16:55:26,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1564896744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:26,259 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:26,259 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:26,259 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [67986451] [2022-07-19 16:55:26,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:26,259 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:26,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:26,260 INFO L87 Difference]: Start difference. First operand 575 states and 924 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:29,418 INFO L93 Difference]: Finished difference Result 1270 states and 2089 transitions. [2022-07-19 16:55:29,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:55:29,418 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 71 [2022-07-19 16:55:29,419 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:29,421 INFO L225 Difference]: With dead ends: 1270 [2022-07-19 16:55:29,422 INFO L226 Difference]: Without dead ends: 761 [2022-07-19 16:55:29,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:29,423 INFO L413 NwaCegarLoop]: 826 mSDtfsCounter, 761 mSDsluCounter, 817 mSDsCounter, 0 mSdLazyCounter, 2270 mSolverCounterSat, 153 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 845 SdHoareTripleChecker+Valid, 1643 SdHoareTripleChecker+Invalid, 2423 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 153 IncrementalHoareTripleChecker+Valid, 2270 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:29,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [845 Valid, 1643 Invalid, 2423 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [153 Valid, 2270 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:55:29,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 761 states. [2022-07-19 16:55:29,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 761 to 578. [2022-07-19 16:55:29,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 455 states have (on average 1.6175824175824176) internal successors, (736), 476 states have internal predecessors, (736), 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 16:55:29,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 927 transitions. [2022-07-19 16:55:29,459 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 927 transitions. Word has length 71 [2022-07-19 16:55:29,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:29,459 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 927 transitions. [2022-07-19 16:55:29,460 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:29,460 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 927 transitions. [2022-07-19 16:55:29,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:55:29,461 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:29,461 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:55:29,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:55:29,461 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:29,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:29,462 INFO L85 PathProgramCache]: Analyzing trace with hash -125115907, now seen corresponding path program 1 times [2022-07-19 16:55:29,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:29,462 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437567626] [2022-07-19 16:55:29,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:29,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:29,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:29,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:29,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:29,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:55:29,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:29,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:29,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:29,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:29,731 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 16:55:29,731 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:29,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437567626] [2022-07-19 16:55:29,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437567626] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:29,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:29,732 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:55:29,732 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [710855507] [2022-07-19 16:55:29,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:29,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:55:29,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:29,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:55:29,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:55:29,733 INFO L87 Difference]: Start difference. First operand 578 states and 927 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), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:55:33,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:33,804 INFO L93 Difference]: Finished difference Result 1274 states and 2095 transitions. [2022-07-19 16:55:33,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:55:33,805 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), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-19 16:55:33,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:33,809 INFO L225 Difference]: With dead ends: 1274 [2022-07-19 16:55:33,809 INFO L226 Difference]: Without dead ends: 768 [2022-07-19 16:55:33,811 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:55:33,811 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 771 mSDsluCounter, 1760 mSDsCounter, 0 mSdLazyCounter, 4610 mSolverCounterSat, 149 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 856 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 149 IncrementalHoareTripleChecker+Valid, 4610 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:33,812 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [856 Valid, 2610 Invalid, 4759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [149 Valid, 4610 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-19 16:55:33,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 768 states. [2022-07-19 16:55:33,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 768 to 589. [2022-07-19 16:55:33,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 589 states, 463 states have (on average 1.613390928725702) internal successors, (747), 486 states have internal predecessors, (747), 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 16:55:33,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 589 states to 589 states and 942 transitions. [2022-07-19 16:55:33,852 INFO L78 Accepts]: Start accepts. Automaton has 589 states and 942 transitions. Word has length 72 [2022-07-19 16:55:33,852 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:33,852 INFO L495 AbstractCegarLoop]: Abstraction has 589 states and 942 transitions. [2022-07-19 16:55:33,852 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), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-19 16:55:33,853 INFO L276 IsEmpty]: Start isEmpty. Operand 589 states and 942 transitions. [2022-07-19 16:55:33,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:55:33,854 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:33,854 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 16:55:33,854 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:55:33,854 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:33,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:33,854 INFO L85 PathProgramCache]: Analyzing trace with hash -805304994, now seen corresponding path program 1 times [2022-07-19 16:55:33,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:33,855 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [682909461] [2022-07-19 16:55:33,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:33,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:33,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:33,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:33,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:33,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:33,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:33,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:55:34,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:34,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:34,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:34,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:34,107 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 16:55:34,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:34,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [682909461] [2022-07-19 16:55:34,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [682909461] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:34,107 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:34,108 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:34,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1825321063] [2022-07-19 16:55:34,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:34,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:34,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:34,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:34,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:34,109 INFO L87 Difference]: Start difference. First operand 589 states and 942 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:37,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:37,801 INFO L93 Difference]: Finished difference Result 1297 states and 2126 transitions. [2022-07-19 16:55:37,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:55:37,802 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 72 [2022-07-19 16:55:37,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:37,805 INFO L225 Difference]: With dead ends: 1297 [2022-07-19 16:55:37,806 INFO L226 Difference]: Without dead ends: 785 [2022-07-19 16:55:37,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:37,808 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 756 mSDsluCounter, 828 mSDsCounter, 0 mSdLazyCounter, 2268 mSolverCounterSat, 151 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 1660 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 151 IncrementalHoareTripleChecker+Valid, 2268 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:37,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 1660 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [151 Valid, 2268 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-19 16:55:37,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 785 states. [2022-07-19 16:55:37,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 785 to 593. [2022-07-19 16:55:37,846 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 593 states, 467 states have (on average 1.6059957173447537) internal successors, (750), 490 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 16:55:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 593 states to 593 states and 945 transitions. [2022-07-19 16:55:37,848 INFO L78 Accepts]: Start accepts. Automaton has 593 states and 945 transitions. Word has length 72 [2022-07-19 16:55:37,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:37,848 INFO L495 AbstractCegarLoop]: Abstraction has 593 states and 945 transitions. [2022-07-19 16:55:37,848 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), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:37,848 INFO L276 IsEmpty]: Start isEmpty. Operand 593 states and 945 transitions. [2022-07-19 16:55:37,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-19 16:55:37,849 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:37,849 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 16:55:37,849 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:55:37,850 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:37,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:37,850 INFO L85 PathProgramCache]: Analyzing trace with hash 568276798, now seen corresponding path program 1 times [2022-07-19 16:55:37,850 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:37,850 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1737878447] [2022-07-19 16:55:37,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:37,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:37,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:37,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:37,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:37,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:37,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:37,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:38,084 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:55:38,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:38,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:38,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:38,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:38,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:38,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:38,100 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 16:55:38,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:38,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1737878447] [2022-07-19 16:55:38,101 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1737878447] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:38,101 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:38,101 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:38,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447105650] [2022-07-19 16:55:38,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:38,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:38,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:38,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:38,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:38,102 INFO L87 Difference]: Start difference. First operand 593 states and 945 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 16:55:40,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:40,581 INFO L93 Difference]: Finished difference Result 1339 states and 2169 transitions. [2022-07-19 16:55:40,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-19 16:55:40,581 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 16:55:40,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:40,585 INFO L225 Difference]: With dead ends: 1339 [2022-07-19 16:55:40,585 INFO L226 Difference]: Without dead ends: 744 [2022-07-19 16:55:40,586 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 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 16:55:40,587 INFO L413 NwaCegarLoop]: 835 mSDtfsCounter, 1137 mSDsluCounter, 810 mSDsCounter, 0 mSdLazyCounter, 2128 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1221 SdHoareTripleChecker+Valid, 1645 SdHoareTripleChecker+Invalid, 2425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 2128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:40,587 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1221 Valid, 1645 Invalid, 2425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 2128 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-19 16:55:40,588 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 744 states. [2022-07-19 16:55:40,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 744 to 574. [2022-07-19 16:55:40,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 574 states, 451 states have (on average 1.6141906873614191) internal successors, (728), 472 states have internal predecessors, (728), 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 16:55:40,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 574 states to 574 states and 919 transitions. [2022-07-19 16:55:40,680 INFO L78 Accepts]: Start accepts. Automaton has 574 states and 919 transitions. Word has length 72 [2022-07-19 16:55:40,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:40,680 INFO L495 AbstractCegarLoop]: Abstraction has 574 states and 919 transitions. [2022-07-19 16:55:40,681 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 16:55:40,681 INFO L276 IsEmpty]: Start isEmpty. Operand 574 states and 919 transitions. [2022-07-19 16:55:40,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-19 16:55:40,682 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:40,682 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 16:55:40,682 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:55:40,682 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:40,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:40,683 INFO L85 PathProgramCache]: Analyzing trace with hash 414656204, now seen corresponding path program 1 times [2022-07-19 16:55:40,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:40,683 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [654447711] [2022-07-19 16:55:40,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:40,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:40,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:40,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:55:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:40,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:40,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:40,932 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 16:55:40,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:40,933 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [654447711] [2022-07-19 16:55:40,933 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [654447711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:40,933 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:40,933 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-19 16:55:40,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896873438] [2022-07-19 16:55:40,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:40,933 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-19 16:55:40,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:40,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-19 16:55:40,934 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-19 16:55:40,934 INFO L87 Difference]: Start difference. First operand 574 states and 919 transitions. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:44,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:44,164 INFO L93 Difference]: Finished difference Result 1274 states and 2084 transitions. [2022-07-19 16:55:44,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:55:44,165 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 73 [2022-07-19 16:55:44,165 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:44,168 INFO L225 Difference]: With dead ends: 1274 [2022-07-19 16:55:44,168 INFO L226 Difference]: Without dead ends: 765 [2022-07-19 16:55:44,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:55:44,170 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 1183 mSDsluCounter, 815 mSDsCounter, 0 mSdLazyCounter, 2101 mSolverCounterSat, 299 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1267 SdHoareTripleChecker+Valid, 1638 SdHoareTripleChecker+Invalid, 2400 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 299 IncrementalHoareTripleChecker+Valid, 2101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:44,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1267 Valid, 1638 Invalid, 2400 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [299 Valid, 2101 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-19 16:55:44,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 765 states. [2022-07-19 16:55:44,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 765 to 579. [2022-07-19 16:55:44,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 579 states, 456 states have (on average 1.6074561403508771) internal successors, (733), 477 states have internal predecessors, (733), 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 16:55:44,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 579 states to 579 states and 924 transitions. [2022-07-19 16:55:44,233 INFO L78 Accepts]: Start accepts. Automaton has 579 states and 924 transitions. Word has length 73 [2022-07-19 16:55:44,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:44,233 INFO L495 AbstractCegarLoop]: Abstraction has 579 states and 924 transitions. [2022-07-19 16:55:44,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 4 states have internal predecessors, (58), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-19 16:55:44,234 INFO L276 IsEmpty]: Start isEmpty. Operand 579 states and 924 transitions. [2022-07-19 16:55:44,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:55:44,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:44,235 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 16:55:44,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:55:44,235 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:44,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:44,235 INFO L85 PathProgramCache]: Analyzing trace with hash -1473566669, now seen corresponding path program 1 times [2022-07-19 16:55:44,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:44,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734272060] [2022-07-19 16:55:44,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:44,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:44,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:44,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:44,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:44,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:44,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:44,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:55:44,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:44,593 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 16:55:44,593 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:44,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734272060] [2022-07-19 16:55:44,593 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734272060] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:44,593 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:44,593 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:55:44,593 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625489446] [2022-07-19 16:55:44,594 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:44,594 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:55:44,594 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:44,594 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:55:44,594 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:55:44,595 INFO L87 Difference]: Start difference. First operand 579 states and 924 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 16:55:50,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:55:50,381 INFO L93 Difference]: Finished difference Result 2090 states and 3506 transitions. [2022-07-19 16:55:50,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:55:50,385 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 16:55:50,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:55:50,408 INFO L225 Difference]: With dead ends: 2090 [2022-07-19 16:55:50,408 INFO L226 Difference]: Without dead ends: 1589 [2022-07-19 16:55:50,410 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 16:55:50,411 INFO L413 NwaCegarLoop]: 887 mSDtfsCounter, 4392 mSDsluCounter, 1402 mSDsCounter, 0 mSdLazyCounter, 4345 mSolverCounterSat, 1318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4482 SdHoareTripleChecker+Valid, 2289 SdHoareTripleChecker+Invalid, 5663 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1318 IncrementalHoareTripleChecker+Valid, 4345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:55:50,411 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4482 Valid, 2289 Invalid, 5663 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1318 Valid, 4345 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-19 16:55:50,422 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1589 states. [2022-07-19 16:55:50,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1589 to 1097. [2022-07-19 16:55:50,546 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1097 states, 862 states have (on average 1.640371229698376) internal successors, (1414), 892 states have internal predecessors, (1414), 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 16:55:50,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1097 states to 1097 states and 1796 transitions. [2022-07-19 16:55:50,548 INFO L78 Accepts]: Start accepts. Automaton has 1097 states and 1796 transitions. Word has length 74 [2022-07-19 16:55:50,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:55:50,549 INFO L495 AbstractCegarLoop]: Abstraction has 1097 states and 1796 transitions. [2022-07-19 16:55:50,549 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 16:55:50,549 INFO L276 IsEmpty]: Start isEmpty. Operand 1097 states and 1796 transitions. [2022-07-19 16:55:50,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 16:55:50,552 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:55:50,553 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 16:55:50,553 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:55:50,553 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:55:50,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:55:50,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1713019214, now seen corresponding path program 1 times [2022-07-19 16:55:50,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:55:50,554 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [813616063] [2022-07-19 16:55:50,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:55:50,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:55:50,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:55:50,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,670 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:50,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,671 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:55:50,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:55:50,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:50,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,821 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:55:50,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:55:50,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,990 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:55:50,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:50,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:55:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:51,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:55:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:51,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:55:51,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:51,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-19 16:55:51,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:55:51,117 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 16:55:51,117 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:55:51,117 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [813616063] [2022-07-19 16:55:51,117 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [813616063] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:55:51,117 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:55:51,118 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2022-07-19 16:55:51,118 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1560593680] [2022-07-19 16:55:51,118 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:55:51,118 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-07-19 16:55:51,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:55:51,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-07-19 16:55:51,119 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2022-07-19 16:55:51,119 INFO L87 Difference]: Start difference. First operand 1097 states and 1796 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 16:56:02,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:02,159 INFO L93 Difference]: Finished difference Result 3365 states and 5666 transitions. [2022-07-19 16:56:02,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2022-07-19 16:56:02,160 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 16:56:02,160 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:02,169 INFO L225 Difference]: With dead ends: 3365 [2022-07-19 16:56:02,169 INFO L226 Difference]: Without dead ends: 2346 [2022-07-19 16:56:02,173 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 371 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=326, Invalid=1566, Unknown=0, NotChecked=0, Total=1892 [2022-07-19 16:56:02,174 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 3891 mSDsluCounter, 4563 mSDsCounter, 0 mSdLazyCounter, 12679 mSolverCounterSat, 1667 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3904 SdHoareTripleChecker+Valid, 5618 SdHoareTripleChecker+Invalid, 14346 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1667 IncrementalHoareTripleChecker+Valid, 12679 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:02,174 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3904 Valid, 5618 Invalid, 14346 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1667 Valid, 12679 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-19 16:56:02,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2022-07-19 16:56:02,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1576. [2022-07-19 16:56:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1576 states, 1225 states have (on average 1.6048979591836734) internal successors, (1966), 1257 states have internal predecessors, (1966), 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 16:56:02,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1576 states to 1576 states and 2559 transitions. [2022-07-19 16:56:02,323 INFO L78 Accepts]: Start accepts. Automaton has 1576 states and 2559 transitions. Word has length 112 [2022-07-19 16:56:02,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:02,323 INFO L495 AbstractCegarLoop]: Abstraction has 1576 states and 2559 transitions. [2022-07-19 16:56:02,323 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 16:56:02,324 INFO L276 IsEmpty]: Start isEmpty. Operand 1576 states and 2559 transitions. [2022-07-19 16:56:02,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:56:02,327 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:02,327 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 16:56:02,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-19 16:56:02,327 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:02,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:02,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1223906611, now seen corresponding path program 1 times [2022-07-19 16:56:02,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:02,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127432384] [2022-07-19 16:56:02,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:02,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:02,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:02,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:02,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:56:02,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,595 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:56:02,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:02,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,752 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:02,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:02,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:56:02,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:56:02,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:56:02,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:56:02,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:02,820 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 16:56:02,820 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:02,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127432384] [2022-07-19 16:56:02,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127432384] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:02,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:02,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:56:02,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1614207375] [2022-07-19 16:56:02,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:02,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:56:02,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:02,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:56:02,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:56:02,822 INFO L87 Difference]: Start difference. First operand 1576 states and 2559 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 16:56:08,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:08,240 INFO L93 Difference]: Finished difference Result 3703 states and 6151 transitions. [2022-07-19 16:56:08,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:56:08,240 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 16:56:08,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:08,249 INFO L225 Difference]: With dead ends: 3703 [2022-07-19 16:56:08,250 INFO L226 Difference]: Without dead ends: 2207 [2022-07-19 16:56:08,255 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:56:08,256 INFO L413 NwaCegarLoop]: 870 mSDtfsCounter, 3065 mSDsluCounter, 2354 mSDsCounter, 0 mSdLazyCounter, 5018 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3065 SdHoareTripleChecker+Valid, 3224 SdHoareTripleChecker+Invalid, 6141 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 5018 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:08,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3065 Valid, 3224 Invalid, 6141 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 5018 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-19 16:56:08,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2207 states. [2022-07-19 16:56:08,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2207 to 1578. [2022-07-19 16:56:08,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1578 states, 1227 states have (on average 1.6039119804400979) internal successors, (1968), 1257 states have internal predecessors, (1968), 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 16:56:08,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1578 states to 1578 states and 2561 transitions. [2022-07-19 16:56:08,438 INFO L78 Accepts]: Start accepts. Automaton has 1578 states and 2561 transitions. Word has length 114 [2022-07-19 16:56:08,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:08,439 INFO L495 AbstractCegarLoop]: Abstraction has 1578 states and 2561 transitions. [2022-07-19 16:56:08,439 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 16:56:08,439 INFO L276 IsEmpty]: Start isEmpty. Operand 1578 states and 2561 transitions. [2022-07-19 16:56:08,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-07-19 16:56:08,442 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:08,442 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 16:56:08,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 16:56:08,442 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:08,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:08,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1027503763, now seen corresponding path program 1 times [2022-07-19 16:56:08,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:08,443 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120381879] [2022-07-19 16:56:08,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:08,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:08,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:08,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,569 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:56:08,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:56:08,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:08,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:08,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:08,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:08,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:56:08,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,936 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:56:08,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:56:08,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,951 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-19 16:56:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:08,956 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 16:56:08,956 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:08,956 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120381879] [2022-07-19 16:56:08,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120381879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:08,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:08,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2022-07-19 16:56:08,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [631811492] [2022-07-19 16:56:08,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:08,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2022-07-19 16:56:08,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:08,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2022-07-19 16:56:08,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-19 16:56:08,958 INFO L87 Difference]: Start difference. First operand 1578 states and 2561 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 16:56:16,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:16,627 INFO L93 Difference]: Finished difference Result 4329 states and 7199 transitions. [2022-07-19 16:56:16,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2022-07-19 16:56:16,628 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 16:56:16,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:16,638 INFO L225 Difference]: With dead ends: 4329 [2022-07-19 16:56:16,638 INFO L226 Difference]: Without dead ends: 2831 [2022-07-19 16:56:16,643 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 300 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=379, Invalid=1027, Unknown=0, NotChecked=0, Total=1406 [2022-07-19 16:56:16,644 INFO L413 NwaCegarLoop]: 1092 mSDtfsCounter, 3782 mSDsluCounter, 2843 mSDsCounter, 0 mSdLazyCounter, 7293 mSolverCounterSat, 1471 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3782 SdHoareTripleChecker+Valid, 3935 SdHoareTripleChecker+Invalid, 8764 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1471 IncrementalHoareTripleChecker+Valid, 7293 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:16,644 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3782 Valid, 3935 Invalid, 8764 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1471 Valid, 7293 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-19 16:56:16,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2831 states. [2022-07-19 16:56:16,850 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2831 to 2089. [2022-07-19 16:56:16,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2089 states, 1631 states have (on average 1.6020846106683015) internal successors, (2613), 1661 states have internal predecessors, (2613), 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 16:56:16,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2089 states to 2089 states and 3381 transitions. [2022-07-19 16:56:16,858 INFO L78 Accepts]: Start accepts. Automaton has 2089 states and 3381 transitions. Word has length 114 [2022-07-19 16:56:16,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:16,858 INFO L495 AbstractCegarLoop]: Abstraction has 2089 states and 3381 transitions. [2022-07-19 16:56:16,858 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 16:56:16,859 INFO L276 IsEmpty]: Start isEmpty. Operand 2089 states and 3381 transitions. [2022-07-19 16:56:16,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-19 16:56:16,861 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:16,861 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 16:56:16,861 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 16:56:16,862 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:16,862 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:16,862 INFO L85 PathProgramCache]: Analyzing trace with hash -2080201733, now seen corresponding path program 1 times [2022-07-19 16:56:16,862 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:16,862 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1711176159] [2022-07-19 16:56:16,862 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:16,863 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:16,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:16,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:16,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:16,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:16,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:16,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:56:16,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:56:17,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:17,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:17,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:17,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:56:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:56:17,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:56:17,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-19 16:56:17,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:17,332 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 16:56:17,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:17,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1711176159] [2022-07-19 16:56:17,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1711176159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:17,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:17,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:56:17,333 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820646781] [2022-07-19 16:56:17,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:17,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:56:17,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:17,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:56:17,335 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:56:17,344 INFO L87 Difference]: Start difference. First operand 2089 states and 3381 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 16:56:29,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:29,810 INFO L93 Difference]: Finished difference Result 9039 states and 15779 transitions. [2022-07-19 16:56:29,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2022-07-19 16:56:29,811 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 16:56:29,811 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:29,849 INFO L225 Difference]: With dead ends: 9039 [2022-07-19 16:56:29,850 INFO L226 Difference]: Without dead ends: 7020 [2022-07-19 16:56:29,864 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 513 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=550, Invalid=1172, Unknown=0, NotChecked=0, Total=1722 [2022-07-19 16:56:29,865 INFO L413 NwaCegarLoop]: 997 mSDtfsCounter, 5798 mSDsluCounter, 2310 mSDsCounter, 0 mSdLazyCounter, 6905 mSolverCounterSat, 2823 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5798 SdHoareTripleChecker+Valid, 3307 SdHoareTripleChecker+Invalid, 9728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2823 IncrementalHoareTripleChecker+Valid, 6905 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:29,865 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5798 Valid, 3307 Invalid, 9728 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2823 Valid, 6905 Invalid, 0 Unknown, 0 Unchecked, 9.4s Time] [2022-07-19 16:56:29,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-07-19 16:56:30,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 5397. [2022-07-19 16:56:30,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5397 states, 4192 states have (on average 1.5734732824427482) internal successors, (6596), 4276 states have internal predecessors, (6596), 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 16:56:30,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5397 states to 5397 states and 8846 transitions. [2022-07-19 16:56:30,588 INFO L78 Accepts]: Start accepts. Automaton has 5397 states and 8846 transitions. Word has length 117 [2022-07-19 16:56:30,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:30,588 INFO L495 AbstractCegarLoop]: Abstraction has 5397 states and 8846 transitions. [2022-07-19 16:56:30,588 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 16:56:30,588 INFO L276 IsEmpty]: Start isEmpty. Operand 5397 states and 8846 transitions. [2022-07-19 16:56:30,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-07-19 16:56:30,591 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:30,591 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 16:56:30,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 16:56:30,591 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:30,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:30,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1940227615, now seen corresponding path program 1 times [2022-07-19 16:56:30,592 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:30,592 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1402576952] [2022-07-19 16:56:30,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:30,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:30,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:30,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:30,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,705 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:56:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:56:30,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:30,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:30,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:30,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:30,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:30,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:56:30,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:31,002 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:56:31,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:31,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:56:31,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:31,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-19 16:56:31,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:31,021 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 16:56:31,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:31,022 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1402576952] [2022-07-19 16:56:31,022 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1402576952] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:31,022 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:31,022 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:56:31,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423587728] [2022-07-19 16:56:31,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:31,023 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:56:31,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:31,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:56:31,024 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:56:31,024 INFO L87 Difference]: Start difference. First operand 5397 states and 8846 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 16:56:37,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:37,320 INFO L93 Difference]: Finished difference Result 12379 states and 20864 transitions. [2022-07-19 16:56:37,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:56:37,322 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 16:56:37,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:37,347 INFO L225 Difference]: With dead ends: 12379 [2022-07-19 16:56:37,347 INFO L226 Difference]: Without dead ends: 7062 [2022-07-19 16:56:37,361 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=210, Invalid=546, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:56:37,362 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 2372 mSDsluCounter, 2473 mSDsCounter, 0 mSdLazyCounter, 5614 mSolverCounterSat, 880 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2372 SdHoareTripleChecker+Valid, 3348 SdHoareTripleChecker+Invalid, 6494 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 880 IncrementalHoareTripleChecker+Valid, 5614 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:37,362 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2372 Valid, 3348 Invalid, 6494 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [880 Valid, 5614 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-19 16:56:37,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7062 states. [2022-07-19 16:56:38,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7062 to 5409. [2022-07-19 16:56:38,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5409 states, 4204 states have (on average 1.5718363463368221) internal successors, (6608), 4276 states have internal predecessors, (6608), 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 16:56:38,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5409 states to 5409 states and 8858 transitions. [2022-07-19 16:56:38,086 INFO L78 Accepts]: Start accepts. Automaton has 5409 states and 8858 transitions. Word has length 118 [2022-07-19 16:56:38,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:38,087 INFO L495 AbstractCegarLoop]: Abstraction has 5409 states and 8858 transitions. [2022-07-19 16:56:38,087 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 16:56:38,087 INFO L276 IsEmpty]: Start isEmpty. Operand 5409 states and 8858 transitions. [2022-07-19 16:56:38,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-19 16:56:38,090 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:38,090 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 16:56:38,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2022-07-19 16:56:38,090 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:38,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:38,091 INFO L85 PathProgramCache]: Analyzing trace with hash 84514127, now seen corresponding path program 1 times [2022-07-19 16:56:38,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:38,091 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935927900] [2022-07-19 16:56:38,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:38,091 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:38,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:38,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:38,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:56:38,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:56:38,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:38,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:56:38,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:38,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:38,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:56:38,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-19 16:56:38,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:56:38,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-19 16:56:38,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,699 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:56:38,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:38,700 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 16:56:38,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:56:38,701 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935927900] [2022-07-19 16:56:38,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1935927900] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:56:38,701 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:56:38,701 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2022-07-19 16:56:38,701 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149755417] [2022-07-19 16:56:38,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:56:38,701 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2022-07-19 16:56:38,701 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:56:38,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2022-07-19 16:56:38,702 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=447, Unknown=0, NotChecked=0, Total=506 [2022-07-19 16:56:38,702 INFO L87 Difference]: Start difference. First operand 5409 states and 8858 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 16:56:58,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:56:58,961 INFO L93 Difference]: Finished difference Result 13838 states and 23298 transitions. [2022-07-19 16:56:58,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2022-07-19 16:56:58,961 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 16:56:58,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:56:58,997 INFO L225 Difference]: With dead ends: 13838 [2022-07-19 16:56:58,998 INFO L226 Difference]: Without dead ends: 8381 [2022-07-19 16:56:59,019 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 84 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2250 ImplicationChecksByTransitivity, 7.2s TimeCoverageRelationStatistics Valid=1365, Invalid=5945, Unknown=0, NotChecked=0, Total=7310 [2022-07-19 16:56:59,019 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 10579 mSDsluCounter, 6369 mSDsCounter, 0 mSdLazyCounter, 17968 mSolverCounterSat, 3831 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10579 SdHoareTripleChecker+Valid, 7464 SdHoareTripleChecker+Invalid, 21799 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3831 IncrementalHoareTripleChecker+Valid, 17968 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:56:59,019 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [10579 Valid, 7464 Invalid, 21799 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3831 Valid, 17968 Invalid, 0 Unknown, 0 Unchecked, 11.9s Time] [2022-07-19 16:56:59,025 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8381 states. [2022-07-19 16:56:59,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8381 to 6709. [2022-07-19 16:56:59,861 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6709 states, 5284 states have (on average 1.5685087055261167) internal successors, (8288), 5372 states have internal predecessors, (8288), 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 16:56:59,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6709 states to 6709 states and 10942 transitions. [2022-07-19 16:56:59,886 INFO L78 Accepts]: Start accepts. Automaton has 6709 states and 10942 transitions. Word has length 125 [2022-07-19 16:56:59,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:56:59,887 INFO L495 AbstractCegarLoop]: Abstraction has 6709 states and 10942 transitions. [2022-07-19 16:56:59,887 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 16:56:59,887 INFO L276 IsEmpty]: Start isEmpty. Operand 6709 states and 10942 transitions. [2022-07-19 16:56:59,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-19 16:56:59,890 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:56:59,890 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 16:56:59,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2022-07-19 16:56:59,890 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:56:59,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:56:59,891 INFO L85 PathProgramCache]: Analyzing trace with hash -1313058231, now seen corresponding path program 1 times [2022-07-19 16:56:59,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:56:59,891 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1705619390] [2022-07-19 16:56:59,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:56:59,891 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:56:59,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:56:59,985 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:56:59,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:57:00,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:57:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:00,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:00,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:00,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:00,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,341 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:57:00,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:57:00,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:00,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:57:00,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-19 16:57:00,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:00,413 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 16:57:00,413 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:00,414 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1705619390] [2022-07-19 16:57:00,414 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1705619390] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:00,414 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:00,414 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:57:00,414 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309991754] [2022-07-19 16:57:00,414 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:00,415 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:57:00,415 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:00,415 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:57:00,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:57:00,416 INFO L87 Difference]: Start difference. First operand 6709 states and 10942 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 16:57:14,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:14,156 INFO L93 Difference]: Finished difference Result 21472 states and 36412 transitions. [2022-07-19 16:57:14,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-07-19 16:57:14,157 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 16:57:14,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:14,232 INFO L225 Difference]: With dead ends: 21472 [2022-07-19 16:57:14,232 INFO L226 Difference]: Without dead ends: 14843 [2022-07-19 16:57:14,258 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 521 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=524, Invalid=1546, Unknown=0, NotChecked=0, Total=2070 [2022-07-19 16:57:14,259 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 7876 mSDsluCounter, 2889 mSDsCounter, 0 mSdLazyCounter, 8690 mSolverCounterSat, 2970 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7876 SdHoareTripleChecker+Valid, 3761 SdHoareTripleChecker+Invalid, 11660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2970 IncrementalHoareTripleChecker+Valid, 8690 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:14,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7876 Valid, 3761 Invalid, 11660 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2970 Valid, 8690 Invalid, 0 Unknown, 0 Unchecked, 8.6s Time] [2022-07-19 16:57:14,269 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14843 states. [2022-07-19 16:57:15,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14843 to 12099. [2022-07-19 16:57:15,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12099 states, 9554 states have (on average 1.5569395017793595) internal successors, (14875), 9705 states have internal predecessors, (14875), 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 16:57:15,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12099 states to 12099 states and 19698 transitions. [2022-07-19 16:57:15,851 INFO L78 Accepts]: Start accepts. Automaton has 12099 states and 19698 transitions. Word has length 126 [2022-07-19 16:57:15,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:15,851 INFO L495 AbstractCegarLoop]: Abstraction has 12099 states and 19698 transitions. [2022-07-19 16:57:15,851 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 16:57:15,852 INFO L276 IsEmpty]: Start isEmpty. Operand 12099 states and 19698 transitions. [2022-07-19 16:57:15,856 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:57:15,856 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:15,856 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 16:57:15,857 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2022-07-19 16:57:15,857 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:15,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:15,857 INFO L85 PathProgramCache]: Analyzing trace with hash -824912493, now seen corresponding path program 1 times [2022-07-19 16:57:15,857 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:15,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784809100] [2022-07-19 16:57:15,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:15,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:15,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:15,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:15,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:15,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:15,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:15,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:57:15,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:57:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:16,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:16,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:16,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:16,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:57:16,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:57:16,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:16,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:57:16,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:16,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:57:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:16,349 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 16:57:16,349 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:16,349 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784809100] [2022-07-19 16:57:16,350 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784809100] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:16,350 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:16,350 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2022-07-19 16:57:16,350 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1829462100] [2022-07-19 16:57:16,350 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:16,351 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-07-19 16:57:16,351 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:16,351 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-07-19 16:57:16,352 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:57:16,352 INFO L87 Difference]: Start difference. First operand 12099 states and 19698 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 16:57:31,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:31,838 INFO L93 Difference]: Finished difference Result 37507 states and 62763 transitions. [2022-07-19 16:57:31,838 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2022-07-19 16:57:31,839 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 16:57:31,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:31,947 INFO L225 Difference]: With dead ends: 37507 [2022-07-19 16:57:31,947 INFO L226 Difference]: Without dead ends: 25489 [2022-07-19 16:57:31,983 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 789 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=725, Invalid=2031, Unknown=0, NotChecked=0, Total=2756 [2022-07-19 16:57:31,984 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 7109 mSDsluCounter, 3146 mSDsCounter, 0 mSdLazyCounter, 9977 mSolverCounterSat, 3733 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7109 SdHoareTripleChecker+Valid, 4919 SdHoareTripleChecker+Invalid, 13710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3733 IncrementalHoareTripleChecker+Valid, 9977 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:31,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7109 Valid, 4919 Invalid, 13710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3733 Valid, 9977 Invalid, 0 Unknown, 0 Unchecked, 8.8s Time] [2022-07-19 16:57:32,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25489 states. [2022-07-19 16:57:34,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25489 to 21023. [2022-07-19 16:57:34,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21023 states, 16720 states have (on average 1.560346889952153) internal successors, (26089), 16922 states have internal predecessors, (26089), 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 16:57:34,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21023 states to 21023 states and 34206 transitions. [2022-07-19 16:57:34,682 INFO L78 Accepts]: Start accepts. Automaton has 21023 states and 34206 transitions. Word has length 131 [2022-07-19 16:57:34,682 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:34,682 INFO L495 AbstractCegarLoop]: Abstraction has 21023 states and 34206 transitions. [2022-07-19 16:57:34,683 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 16:57:34,683 INFO L276 IsEmpty]: Start isEmpty. Operand 21023 states and 34206 transitions. [2022-07-19 16:57:34,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-19 16:57:34,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:34,686 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 16:57:34,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2022-07-19 16:57:34,686 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:34,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:34,686 INFO L85 PathProgramCache]: Analyzing trace with hash 561290901, now seen corresponding path program 1 times [2022-07-19 16:57:34,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:34,687 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [780375960] [2022-07-19 16:57:34,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:34,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:34,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:34,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:57:34,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:57:34,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:34,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:34,981 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:35,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:35,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-19 16:57:35,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:57:35,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:35,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-19 16:57:35,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:35,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-19 16:57:35,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:35,178 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 16:57:35,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:35,179 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [780375960] [2022-07-19 16:57:35,179 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [780375960] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:35,179 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:35,179 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:57:35,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1962983650] [2022-07-19 16:57:35,179 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:35,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:57:35,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:35,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:57:35,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:57:35,181 INFO L87 Difference]: Start difference. First operand 21023 states and 34206 transitions. Second operand has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:57:45,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:45,712 INFO L93 Difference]: Finished difference Result 49198 states and 82573 transitions. [2022-07-19 16:57:45,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:57:45,712 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) Word has length 131 [2022-07-19 16:57:45,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:45,838 INFO L225 Difference]: With dead ends: 49198 [2022-07-19 16:57:45,838 INFO L226 Difference]: Without dead ends: 28255 [2022-07-19 16:57:45,906 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=174, Invalid=378, Unknown=0, NotChecked=0, Total=552 [2022-07-19 16:57:45,907 INFO L413 NwaCegarLoop]: 872 mSDtfsCounter, 3171 mSDsluCounter, 1929 mSDsCounter, 0 mSdLazyCounter, 4852 mSolverCounterSat, 1560 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3171 SdHoareTripleChecker+Valid, 2801 SdHoareTripleChecker+Invalid, 6412 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1560 IncrementalHoareTripleChecker+Valid, 4852 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:45,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3171 Valid, 2801 Invalid, 6412 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1560 Valid, 4852 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-19 16:57:45,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28255 states. [2022-07-19 16:57:48,616 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28255 to 21119. [2022-07-19 16:57:48,633 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21119 states, 16816 states have (on average 1.5571479543292104) internal successors, (26185), 17018 states have internal predecessors, (26185), 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 16:57:48,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21119 states to 21119 states and 34302 transitions. [2022-07-19 16:57:48,725 INFO L78 Accepts]: Start accepts. Automaton has 21119 states and 34302 transitions. Word has length 131 [2022-07-19 16:57:48,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:48,725 INFO L495 AbstractCegarLoop]: Abstraction has 21119 states and 34302 transitions. [2022-07-19 16:57:48,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 7.6923076923076925) internal successors, (100), 9 states have internal predecessors, (100), 4 states have call successors, (15), 6 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 4 states have call successors, (14) [2022-07-19 16:57:48,725 INFO L276 IsEmpty]: Start isEmpty. Operand 21119 states and 34302 transitions. [2022-07-19 16:57:48,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-19 16:57:48,728 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:48,728 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 16:57:48,728 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2022-07-19 16:57:48,729 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:48,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:48,729 INFO L85 PathProgramCache]: Analyzing trace with hash 1197498161, now seen corresponding path program 1 times [2022-07-19 16:57:48,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:48,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584526318] [2022-07-19 16:57:48,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:48,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:48,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:48,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:48,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:48,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:48,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:57:48,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:48,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:57:48,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:49,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:49,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:49,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,203 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:49,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:57:49,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:57:49,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:49,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:57:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:49,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:57:49,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,361 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 16:57:49,361 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:49,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584526318] [2022-07-19 16:57:49,361 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584526318] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:57:49,361 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1236842168] [2022-07-19 16:57:49,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:49,362 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:57:49,362 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:57:49,369 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 16:57:49,372 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 16:57:49,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:49,623 INFO L263 TraceCheckSpWp]: Trace formula consists of 1723 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:57:49,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:57:49,843 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 16:57:49,843 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:57:49,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1236842168] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:49,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:57:49,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 25 [2022-07-19 16:57:49,844 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2062275594] [2022-07-19 16:57:49,844 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:49,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:57:49,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:49,845 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:57:49,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=532, Unknown=0, NotChecked=0, Total=600 [2022-07-19 16:57:49,845 INFO L87 Difference]: Start difference. First operand 21119 states and 34302 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 16:57:52,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:57:52,877 INFO L93 Difference]: Finished difference Result 21280 states and 34575 transitions. [2022-07-19 16:57:52,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:57:52,878 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 16:57:52,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:57:52,938 INFO L225 Difference]: With dead ends: 21280 [2022-07-19 16:57:52,938 INFO L226 Difference]: Without dead ends: 21265 [2022-07-19 16:57:52,950 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 16:57:52,950 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 907 mSDsluCounter, 715 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 915 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-19 16:57:52,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [915 Valid, 1624 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 208 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-19 16:57:52,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21265 states. [2022-07-19 16:57:55,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21265 to 21131. [2022-07-19 16:57:55,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21131 states, 16828 states have (on average 1.5567506536724507) internal successors, (26197), 17030 states have internal predecessors, (26197), 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 16:57:55,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21131 states to 21131 states and 34314 transitions. [2022-07-19 16:57:55,560 INFO L78 Accepts]: Start accepts. Automaton has 21131 states and 34314 transitions. Word has length 134 [2022-07-19 16:57:55,560 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:57:55,560 INFO L495 AbstractCegarLoop]: Abstraction has 21131 states and 34314 transitions. [2022-07-19 16:57:55,560 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 16:57:55,560 INFO L276 IsEmpty]: Start isEmpty. Operand 21131 states and 34314 transitions. [2022-07-19 16:57:55,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-19 16:57:55,563 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:57:55,564 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 16:57:55,582 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 16:57:55,781 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 16:57:55,782 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:57:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:57:55,782 INFO L85 PathProgramCache]: Analyzing trace with hash 1210105868, now seen corresponding path program 1 times [2022-07-19 16:57:55,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:57:55,782 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899701513] [2022-07-19 16:57:55,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:57:55,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:57:55,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:55,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:55,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:55,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:57:55,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:57:56,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:56,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:57:56,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:57:56,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:56,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:57:56,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:57:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-19 16:57:56,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-19 16:57:56,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:57:56,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-19 16:57:56,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-19 16:57:56,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:57:56,326 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 16:57:56,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:57:56,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899701513] [2022-07-19 16:57:56,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899701513] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:57:56,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:57:56,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:57:56,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174101596] [2022-07-19 16:57:56,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:57:56,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:57:56,327 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:57:56,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:57:56,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:57:56,328 INFO L87 Difference]: Start difference. First operand 21131 states and 34314 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 16:58:13,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:58:13,938 INFO L93 Difference]: Finished difference Result 61133 states and 105145 transitions. [2022-07-19 16:58:13,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 58 states. [2022-07-19 16:58:13,938 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 16:58:13,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:58:14,114 INFO L225 Difference]: With dead ends: 61133 [2022-07-19 16:58:14,114 INFO L226 Difference]: Without dead ends: 40088 [2022-07-19 16:58:14,199 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1214 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=664, Invalid=2996, Unknown=0, NotChecked=0, Total=3660 [2022-07-19 16:58:14,199 INFO L413 NwaCegarLoop]: 1108 mSDtfsCounter, 8732 mSDsluCounter, 2468 mSDsCounter, 0 mSdLazyCounter, 5805 mSolverCounterSat, 3351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8745 SdHoareTripleChecker+Valid, 3576 SdHoareTripleChecker+Invalid, 9156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3351 IncrementalHoareTripleChecker+Valid, 5805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:58:14,200 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8745 Valid, 3576 Invalid, 9156 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3351 Valid, 5805 Invalid, 0 Unknown, 0 Unchecked, 7.7s Time] [2022-07-19 16:58:14,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40088 states. [2022-07-19 16:58:18,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40088 to 33144. [2022-07-19 16:58:18,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33144 states, 26279 states have (on average 1.542562502378325) internal successors, (40537), 26667 states have internal predecessors, (40537), 4942 states have call successors, (4942), 1375 states have call predecessors, (4942), 1922 states have return successors, (8848), 5277 states have call predecessors, (8848), 4937 states have call successors, (8848) [2022-07-19 16:58:18,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33144 states to 33144 states and 54327 transitions. [2022-07-19 16:58:18,906 INFO L78 Accepts]: Start accepts. Automaton has 33144 states and 54327 transitions. Word has length 140 [2022-07-19 16:58:18,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:58:18,906 INFO L495 AbstractCegarLoop]: Abstraction has 33144 states and 54327 transitions. [2022-07-19 16:58:18,907 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 16:58:18,907 INFO L276 IsEmpty]: Start isEmpty. Operand 33144 states and 54327 transitions. [2022-07-19 16:58:18,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2022-07-19 16:58:18,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:58:18,911 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 16:58:18,911 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2022-07-19 16:58:18,911 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:58:18,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:58:18,911 INFO L85 PathProgramCache]: Analyzing trace with hash 358441107, now seen corresponding path program 1 times [2022-07-19 16:58:18,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:58:18,912 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [743172274] [2022-07-19 16:58:18,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:58:18,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:58:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:58:19,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:19,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:58:19,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:58:19,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:19,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:58:19,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:19,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:58:19,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-19 16:58:19,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 16:58:19,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:19,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-19 16:58:19,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:19,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,629 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:58:19,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,630 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-19 16:58:19,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-19 16:58:19,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,633 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 16:58:19,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:58:19,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [743172274] [2022-07-19 16:58:19,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [743172274] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:58:19,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742315705] [2022-07-19 16:58:19,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:58:19,634 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:58:19,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:58:19,649 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 16:58:19,650 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 16:58:19,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:19,906 INFO L263 TraceCheckSpWp]: Trace formula consists of 1778 conjuncts, 11 conjunts are in the unsatisfiable core [2022-07-19 16:58:19,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:58:20,610 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 16:58:20,611 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:58:20,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742315705] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:58:20,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:58:20,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [22] total 28 [2022-07-19 16:58:20,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112542009] [2022-07-19 16:58:20,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:58:20,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-19 16:58:20,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:58:20,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-19 16:58:20,613 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=679, Unknown=0, NotChecked=0, Total=756 [2022-07-19 16:58:20,613 INFO L87 Difference]: Start difference. First operand 33144 states and 54327 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) [2022-07-19 16:58:32,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:58:32,528 INFO L93 Difference]: Finished difference Result 86862 states and 144011 transitions. [2022-07-19 16:58:32,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-19 16:58:32,529 INFO L78 Accepts]: Start accepts. Automaton has 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) Word has length 152 [2022-07-19 16:58:32,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:58:32,775 INFO L225 Difference]: With dead ends: 86862 [2022-07-19 16:58:32,776 INFO L226 Difference]: Without dead ends: 53796 [2022-07-19 16:58:32,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 147 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=96, Invalid=834, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:58:32,892 INFO L413 NwaCegarLoop]: 1639 mSDtfsCounter, 3360 mSDsluCounter, 1285 mSDsCounter, 0 mSdLazyCounter, 4235 mSolverCounterSat, 777 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3498 SdHoareTripleChecker+Valid, 2924 SdHoareTripleChecker+Invalid, 5012 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 777 IncrementalHoareTripleChecker+Valid, 4235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:58:32,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3498 Valid, 2924 Invalid, 5012 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [777 Valid, 4235 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:58:32,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53796 states. [2022-07-19 16:58:40,778 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53796 to 51734. [2022-07-19 16:58:40,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 51734 states, 41188 states have (on average 1.5446974847042827) internal successors, (63623), 41772 states have internal predecessors, (63623), 7514 states have call successors, (7514), 2156 states have call predecessors, (7514), 3031 states have return successors, (14516), 7981 states have call predecessors, (14516), 7509 states have call successors, (14516) [2022-07-19 16:58:41,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51734 states to 51734 states and 85653 transitions. [2022-07-19 16:58:41,140 INFO L78 Accepts]: Start accepts. Automaton has 51734 states and 85653 transitions. Word has length 152 [2022-07-19 16:58:41,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:58:41,140 INFO L495 AbstractCegarLoop]: Abstraction has 51734 states and 85653 transitions. [2022-07-19 16:58:41,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has 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) [2022-07-19 16:58:41,140 INFO L276 IsEmpty]: Start isEmpty. Operand 51734 states and 85653 transitions. [2022-07-19 16:58:41,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-19 16:58:41,144 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:58:41,145 INFO L195 NwaCegarLoop]: trace histogram [2, 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, 1, 1] [2022-07-19 16:58:41,162 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-19 16:58:41,362 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-19 16:58:41,363 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:58:41,363 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:58:41,363 INFO L85 PathProgramCache]: Analyzing trace with hash 914241307, now seen corresponding path program 1 times [2022-07-19 16:58:41,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:58:41,363 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073296641] [2022-07-19 16:58:41,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:58:41,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:58:41,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:58:41,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:41,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:58:41,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:58:41,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:58:41,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:58:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:41,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:58:41,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2022-07-19 16:58:41,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-19 16:58:41,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,872 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:41,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-19 16:58:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:58:41,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,886 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-19 16:58:41,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-19 16:58:41,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-19 16:58:41,889 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:58:41,891 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-07-19 16:58:41,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:58:41,892 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073296641] [2022-07-19 16:58:41,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073296641] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:58:41,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:58:41,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-07-19 16:58:41,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1427597217] [2022-07-19 16:58:41,892 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:58:41,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:58:41,893 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:58:41,893 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:58:41,893 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:58:41,894 INFO L87 Difference]: Start difference. First operand 51734 states and 85653 transitions. Second operand has 13 states, 13 states have (on average 8.923076923076923) internal successors, (116), 7 states have internal predecessors, (116), 4 states have call successors, (18), 6 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 3 states have call successors, (17)