./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product29.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 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:34:22,931 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:34:22,933 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:34:22,968 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:34:22,982 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:34:22,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:34:22,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:34:22,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:34:22,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:34:22,991 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:34:22,992 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:34:22,995 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:34:22,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:34:22,997 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:34:22,998 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:34:22,999 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:34:23,000 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:34:23,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:34:23,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:34:23,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:34:23,003 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:34:23,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:34:23,004 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:34:23,005 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:34:23,005 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:34:23,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:34:23,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:34:23,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:34:23,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:34:23,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:34:23,009 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:34:23,009 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:34:23,010 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:34:23,010 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:34:23,011 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:34:23,011 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:34:23,011 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:34:23,012 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:34:23,012 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:34:23,012 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:34:23,013 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:34:23,013 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:34:23,014 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:34:23,029 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:34:23,033 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:34:23,034 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:34:23,034 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:34:23,035 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:34:23,035 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:34:23,035 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:34:23,035 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:34:23,036 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:34:23,036 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:34:23,037 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:34:23,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:34:23,038 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:34:23,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:34:23,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:34:23,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:34:23,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:34:23,039 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:34:23,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:34:23,040 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:34:23,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:34:23,041 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 0d12edbd4df2f08d75221f3c96b68e50e6394815b34a699d313e71ea24bf9c38 [2022-07-13 17:34:23,238 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:34:23,258 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:34:23,260 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:34:23,261 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:34:23,261 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:34:23,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2022-07-13 17:34:23,302 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7900d5f0/7b9eecc7c2e5440790cff66fbb7c1da3/FLAGd4f043f57 [2022-07-13 17:34:23,721 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:34:23,722 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c [2022-07-13 17:34:23,735 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7900d5f0/7b9eecc7c2e5440790cff66fbb7c1da3/FLAGd4f043f57 [2022-07-13 17:34:24,061 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7900d5f0/7b9eecc7c2e5440790cff66fbb7c1da3 [2022-07-13 17:34:24,063 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:34:24,064 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:34:24,065 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:34:24,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:34:24,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:34:24,072 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,073 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614bd0af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24, skipping insertion in model container [2022-07-13 17:34:24,073 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,077 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:34:24,136 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:34:24,488 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2022-07-13 17:34:24,559 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:34:24,577 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:34:24,621 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product29.cil.c[40506,40519] [2022-07-13 17:34:24,644 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:34:24,660 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:34:24,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24 WrapperNode [2022-07-13 17:34:24,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:34:24,661 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:34:24,662 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:34:24,662 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:34:24,666 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,697 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,747 INFO L137 Inliner]: procedures = 91, calls = 347, calls flagged for inlining = 26, calls inlined = 23, statements flattened = 928 [2022-07-13 17:34:24,752 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:34:24,753 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:34:24,753 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:34:24,753 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:34:24,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,771 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,787 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,821 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,830 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,835 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:34:24,837 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:34:24,841 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:34:24,841 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:34:24,841 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (1/1) ... [2022-07-13 17:34:24,846 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:34:24,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:34:24,861 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) [2022-07-13 17:34:24,867 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 [2022-07-13 17:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-13 17:34:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-13 17:34:24,887 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:34:24,887 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:34:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:34:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:34:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:34:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:34:24,888 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-13 17:34:24,888 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-13 17:34:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:34:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:34:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-13 17:34:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-13 17:34:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:34:24,889 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:34:24,889 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:34:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:34:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:34:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:34:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:34:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:34:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:34:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:34:24,890 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:34:24,890 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:34:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:34:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:34:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-13 17:34:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-13 17:34:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:34:24,891 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:34:24,891 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:34:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:34:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-13 17:34:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-13 17:34:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:34:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:34:24,892 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:34:24,892 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:34:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:34:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:34:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:34:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:34:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:34:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:34:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:34:24,893 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:34:24,893 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:34:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:34:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:34:24,894 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:34:24,894 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:34:24,895 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:34:24,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:34:25,033 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:34:25,035 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:34:25,779 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:34:25,788 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:34:25,788 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:34:25,790 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:34:25 BoogieIcfgContainer [2022-07-13 17:34:25,790 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:34:25,794 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:34:25,794 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:34:25,796 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:34:25,796 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:34:24" (1/3) ... [2022-07-13 17:34:25,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf8e3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:34:25, skipping insertion in model container [2022-07-13 17:34:25,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:24" (2/3) ... [2022-07-13 17:34:25,797 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3cf8e3e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:34:25, skipping insertion in model container [2022-07-13 17:34:25,797 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:34:25" (3/3) ... [2022-07-13 17:34:25,798 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product29.cil.c [2022-07-13 17:34:25,808 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:34:25,809 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:34:25,860 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:34:25,865 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@15f8618b, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1ecb2a6b [2022-07-13 17:34:25,866 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:34:25,881 INFO L276 IsEmpty]: Start isEmpty. Operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) [2022-07-13 17:34:25,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-13 17:34:25,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:25,900 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:34:25,900 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:25,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:25,904 INFO L85 PathProgramCache]: Analyzing trace with hash -2006006506, now seen corresponding path program 1 times [2022-07-13 17:34:25,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:25,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [747257877] [2022-07-13 17:34:25,911 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:25,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:26,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:26,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:26,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,470 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:26,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:26,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:34:26,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,537 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:34:26,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-13 17:34:26,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:34:26,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:26,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2022-07-13 17:34:26,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2022-07-13 17:34:26,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:26,578 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:26,578 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:26,579 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [747257877] [2022-07-13 17:34:26,581 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [747257877] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:26,581 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:26,581 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:34:26,583 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2138759592] [2022-07-13 17:34:26,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:26,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:34:26,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:26,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:34:26,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:34:26,618 INFO L87 Difference]: Start difference. First operand has 597 states, 463 states have (on average 1.6781857451403888) internal successors, (777), 481 states have internal predecessors, (777), 106 states have call successors, (106), 26 states have call predecessors, (106), 26 states have return successors, (106), 103 states have call predecessors, (106), 106 states have call successors, (106) Second operand has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:32,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:32,451 INFO L93 Difference]: Finished difference Result 1554 states and 2682 transitions. [2022-07-13 17:34:32,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:34:32,454 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 99 [2022-07-13 17:34:32,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:32,468 INFO L225 Difference]: With dead ends: 1554 [2022-07-13 17:34:32,468 INFO L226 Difference]: Without dead ends: 957 [2022-07-13 17:34:32,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:34:32,476 INFO L413 NwaCegarLoop]: 991 mSDtfsCounter, 1783 mSDsluCounter, 2733 mSDsCounter, 0 mSdLazyCounter, 5729 mSolverCounterSat, 577 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1894 SdHoareTripleChecker+Valid, 3724 SdHoareTripleChecker+Invalid, 6306 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 577 IncrementalHoareTripleChecker+Valid, 5729 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:32,477 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1894 Valid, 3724 Invalid, 6306 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [577 Valid, 5729 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-13 17:34:32,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 957 states. [2022-07-13 17:34:32,654 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 957 to 600. [2022-07-13 17:34:32,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.6695278969957081) internal successors, (778), 484 states have internal predecessors, (778), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2022-07-13 17:34:32,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 991 transitions. [2022-07-13 17:34:32,665 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 991 transitions. Word has length 99 [2022-07-13 17:34:32,665 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:32,665 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 991 transitions. [2022-07-13 17:34:32,666 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.888888888888889) internal successors, (71), 6 states have internal predecessors, (71), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 991 transitions. [2022-07-13 17:34:32,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:34:32,672 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:32,672 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] [2022-07-13 17:34:32,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:34:32,673 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:32,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:32,673 INFO L85 PathProgramCache]: Analyzing trace with hash -2109230418, now seen corresponding path program 1 times [2022-07-13 17:34:32,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:32,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2083248506] [2022-07-13 17:34:32,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:32,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:32,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:32,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:32,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:32,977 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:32,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:32,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:32,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:32,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:32,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:32,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:32,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:34:33,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:34:33,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:34:33,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:34:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:33,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:34:33,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:34:33,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,030 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:33,031 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:33,031 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2083248506] [2022-07-13 17:34:33,031 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2083248506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:33,031 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:33,031 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:34:33,032 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152662704] [2022-07-13 17:34:33,032 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:33,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:34:33,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:33,033 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:34:33,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:34:33,034 INFO L87 Difference]: Start difference. First operand 600 states and 991 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:37,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:37,536 INFO L93 Difference]: Finished difference Result 1540 states and 2622 transitions. [2022-07-13 17:34:37,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:34:37,537 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-07-13 17:34:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:37,561 INFO L225 Difference]: With dead ends: 1540 [2022-07-13 17:34:37,561 INFO L226 Difference]: Without dead ends: 956 [2022-07-13 17:34:37,567 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:34:37,568 INFO L413 NwaCegarLoop]: 954 mSDtfsCounter, 1163 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 2981 mSolverCounterSat, 348 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1273 SdHoareTripleChecker+Valid, 2222 SdHoareTripleChecker+Invalid, 3329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 348 IncrementalHoareTripleChecker+Valid, 2981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:37,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1273 Valid, 2222 Invalid, 3329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [348 Valid, 2981 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-07-13 17:34:37,571 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 956 states. [2022-07-13 17:34:37,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 956 to 600. [2022-07-13 17:34:37,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 600 states, 466 states have (on average 1.667381974248927) internal successors, (777), 484 states have internal predecessors, (777), 107 states have call successors, (107), 26 states have call predecessors, (107), 26 states have return successors, (106), 102 states have call predecessors, (106), 104 states have call successors, (106) [2022-07-13 17:34:37,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 600 states to 600 states and 990 transitions. [2022-07-13 17:34:37,633 INFO L78 Accepts]: Start accepts. Automaton has 600 states and 990 transitions. Word has length 100 [2022-07-13 17:34:37,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:37,635 INFO L495 AbstractCegarLoop]: Abstraction has 600 states and 990 transitions. [2022-07-13 17:34:37,635 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:37,635 INFO L276 IsEmpty]: Start isEmpty. Operand 600 states and 990 transitions. [2022-07-13 17:34:37,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-13 17:34:37,640 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:37,641 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] [2022-07-13 17:34:37,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:34:37,641 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:37,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:37,641 INFO L85 PathProgramCache]: Analyzing trace with hash -343069422, now seen corresponding path program 1 times [2022-07-13 17:34:37,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:37,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117652565] [2022-07-13 17:34:37,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:37,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:37,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:37,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:37,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:37,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:34:37,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:34:37,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:34:37,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,895 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-13 17:34:37,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:34:37,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,905 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:37,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 83 [2022-07-13 17:34:37,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-13 17:34:37,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,934 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:37,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:37,934 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117652565] [2022-07-13 17:34:37,934 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117652565] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:37,934 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:37,934 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:34:37,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679646482] [2022-07-13 17:34:37,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:37,935 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:34:37,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:37,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:34:37,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:34:37,935 INFO L87 Difference]: Start difference. First operand 600 states and 990 transitions. Second operand has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:41,802 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:41,802 INFO L93 Difference]: Finished difference Result 1535 states and 2608 transitions. [2022-07-13 17:34:41,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:34:41,803 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 100 [2022-07-13 17:34:41,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:41,807 INFO L225 Difference]: With dead ends: 1535 [2022-07-13 17:34:41,807 INFO L226 Difference]: Without dead ends: 920 [2022-07-13 17:34:41,823 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:34:41,824 INFO L413 NwaCegarLoop]: 976 mSDtfsCounter, 2207 mSDsluCounter, 1204 mSDsCounter, 0 mSdLazyCounter, 2731 mSolverCounterSat, 790 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2317 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 3521 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 790 IncrementalHoareTripleChecker+Valid, 2731 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:41,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2317 Valid, 2180 Invalid, 3521 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [790 Valid, 2731 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-13 17:34:41,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 920 states. [2022-07-13 17:34:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 920 to 576. [2022-07-13 17:34:41,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 576 states, 445 states have (on average 1.658426966292135) internal successors, (738), 461 states have internal predecessors, (738), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:34:41,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 576 states to 576 states and 947 transitions. [2022-07-13 17:34:41,871 INFO L78 Accepts]: Start accepts. Automaton has 576 states and 947 transitions. Word has length 100 [2022-07-13 17:34:41,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:41,871 INFO L495 AbstractCegarLoop]: Abstraction has 576 states and 947 transitions. [2022-07-13 17:34:41,871 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.285714285714286) internal successors, (72), 4 states have internal predecessors, (72), 2 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:41,871 INFO L276 IsEmpty]: Start isEmpty. Operand 576 states and 947 transitions. [2022-07-13 17:34:41,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-13 17:34:41,873 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:41,873 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:34:41,873 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:34:41,874 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:41,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:41,874 INFO L85 PathProgramCache]: Analyzing trace with hash -2024065694, now seen corresponding path program 1 times [2022-07-13 17:34:41,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:41,874 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546684208] [2022-07-13 17:34:41,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:41,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:41,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:42,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:42,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:42,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:34:42,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:34:42,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:34:42,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:34:42,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:42,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:34:42,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:34:42,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:42,186 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:42,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:42,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546684208] [2022-07-13 17:34:42,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546684208] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:42,186 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:42,186 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:34:42,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [823224403] [2022-07-13 17:34:42,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:42,188 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:34:42,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:42,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:34:42,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:34:42,189 INFO L87 Difference]: Start difference. First operand 576 states and 947 transitions. Second operand has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:47,427 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:47,428 INFO L93 Difference]: Finished difference Result 1498 states and 2539 transitions. [2022-07-13 17:34:47,428 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:34:47,428 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 101 [2022-07-13 17:34:47,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:47,433 INFO L225 Difference]: With dead ends: 1498 [2022-07-13 17:34:47,433 INFO L226 Difference]: Without dead ends: 914 [2022-07-13 17:34:47,436 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:34:47,442 INFO L413 NwaCegarLoop]: 963 mSDtfsCounter, 1687 mSDsluCounter, 2723 mSDsCounter, 0 mSdLazyCounter, 5556 mSolverCounterSat, 569 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1797 SdHoareTripleChecker+Valid, 3686 SdHoareTripleChecker+Invalid, 6125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 569 IncrementalHoareTripleChecker+Valid, 5556 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:47,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1797 Valid, 3686 Invalid, 6125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [569 Valid, 5556 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-13 17:34:47,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-07-13 17:34:47,488 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 570. [2022-07-13 17:34:47,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 439 states have (on average 1.6514806378132119) internal successors, (725), 455 states have internal predecessors, (725), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:34:47,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 934 transitions. [2022-07-13 17:34:47,492 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 934 transitions. Word has length 101 [2022-07-13 17:34:47,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:47,492 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 934 transitions. [2022-07-13 17:34:47,492 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.11111111111111) internal successors, (73), 6 states have internal predecessors, (73), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:47,492 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 934 transitions. [2022-07-13 17:34:47,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-13 17:34:47,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:47,494 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:34:47,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:34:47,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:47,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:47,496 INFO L85 PathProgramCache]: Analyzing trace with hash 647112022, now seen corresponding path program 1 times [2022-07-13 17:34:47,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:47,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [369292165] [2022-07-13 17:34:47,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:47,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:47,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:47,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:47,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:47,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:47,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:47,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:34:47,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:34:47,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-13 17:34:47,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-13 17:34:47,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:47,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:34:47,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-13 17:34:47,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:47,764 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:47,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:47,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [369292165] [2022-07-13 17:34:47,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [369292165] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:47,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:47,765 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:34:47,765 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967240628] [2022-07-13 17:34:47,765 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:47,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:34:47,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:47,766 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:34:47,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:34:47,766 INFO L87 Difference]: Start difference. First operand 570 states and 934 transitions. Second operand has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:51,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:51,783 INFO L93 Difference]: Finished difference Result 1468 states and 2488 transitions. [2022-07-13 17:34:51,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:34:51,784 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 102 [2022-07-13 17:34:51,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:51,789 INFO L225 Difference]: With dead ends: 1468 [2022-07-13 17:34:51,789 INFO L226 Difference]: Without dead ends: 914 [2022-07-13 17:34:51,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:34:51,792 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1108 mSDsluCounter, 1247 mSDsCounter, 0 mSdLazyCounter, 2793 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1219 SdHoareTripleChecker+Valid, 2147 SdHoareTripleChecker+Invalid, 3140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 2793 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:51,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1219 Valid, 2147 Invalid, 3140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 2793 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 17:34:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-07-13 17:34:51,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 570. [2022-07-13 17:34:51,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 570 states, 439 states have (on average 1.6492027334851935) internal successors, (724), 455 states have internal predecessors, (724), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:34:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 570 states to 570 states and 933 transitions. [2022-07-13 17:34:51,872 INFO L78 Accepts]: Start accepts. Automaton has 570 states and 933 transitions. Word has length 102 [2022-07-13 17:34:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:51,872 INFO L495 AbstractCegarLoop]: Abstraction has 570 states and 933 transitions. [2022-07-13 17:34:51,872 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.571428571428571) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:34:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 570 states and 933 transitions. [2022-07-13 17:34:51,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-13 17:34:51,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:51,874 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:34:51,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:34:51,875 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:51,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:51,875 INFO L85 PathProgramCache]: Analyzing trace with hash -600205313, now seen corresponding path program 1 times [2022-07-13 17:34:51,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:51,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694619150] [2022-07-13 17:34:51,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:51,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:51,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,041 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:52,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:52,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:52,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:52,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:52,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:34:52,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:34:52,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:34:52,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:34:52,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:52,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:34:52,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:34:52,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:52,162 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:52,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:52,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694619150] [2022-07-13 17:34:52,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694619150] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:52,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:52,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:34:52,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492824041] [2022-07-13 17:34:52,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:52,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:34:52,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:52,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:34:52,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:34:52,165 INFO L87 Difference]: Start difference. First operand 570 states and 933 transitions. Second operand has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:57,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:57,236 INFO L93 Difference]: Finished difference Result 1486 states and 2508 transitions. [2022-07-13 17:34:57,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:34:57,237 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 103 [2022-07-13 17:34:57,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:57,260 INFO L225 Difference]: With dead ends: 1486 [2022-07-13 17:34:57,260 INFO L226 Difference]: Without dead ends: 908 [2022-07-13 17:34:57,263 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:34:57,264 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1654 mSDsluCounter, 2658 mSDsCounter, 0 mSdLazyCounter, 5492 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1765 SdHoareTripleChecker+Valid, 3594 SdHoareTripleChecker+Invalid, 6056 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 5492 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:57,265 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1765 Valid, 3594 Invalid, 6056 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 5492 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-13 17:34:57,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-07-13 17:34:57,316 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 564. [2022-07-13 17:34:57,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6420323325635104) internal successors, (711), 449 states have internal predecessors, (711), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:34:57,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 920 transitions. [2022-07-13 17:34:57,319 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 920 transitions. Word has length 103 [2022-07-13 17:34:57,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:57,320 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 920 transitions. [2022-07-13 17:34:57,320 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.333333333333334) internal successors, (75), 6 states have internal predecessors, (75), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:34:57,320 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 920 transitions. [2022-07-13 17:34:57,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-13 17:34:57,324 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:57,324 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] [2022-07-13 17:34:57,324 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:34:57,324 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:57,325 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:57,325 INFO L85 PathProgramCache]: Analyzing trace with hash -839754217, now seen corresponding path program 1 times [2022-07-13 17:34:57,325 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:57,325 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932973633] [2022-07-13 17:34:57,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:57,325 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:57,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:57,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:57,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:57,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:57,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:57,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:34:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,570 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:34:57,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:34:57,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:34:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:34:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:34:57,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:34:57,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:57,595 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:57,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:57,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932973633] [2022-07-13 17:34:57,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932973633] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:57,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:57,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:34:57,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2047814828] [2022-07-13 17:34:57,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:57,597 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:34:57,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:57,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:34:57,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:34:57,598 INFO L87 Difference]: Start difference. First operand 564 states and 920 transitions. Second operand has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:01,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:01,210 INFO L93 Difference]: Finished difference Result 1456 states and 2459 transitions. [2022-07-13 17:35:01,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:35:01,210 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 104 [2022-07-13 17:35:01,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:01,219 INFO L225 Difference]: With dead ends: 1456 [2022-07-13 17:35:01,219 INFO L226 Difference]: Without dead ends: 908 [2022-07-13 17:35:01,221 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:35:01,222 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 1592 mSDsluCounter, 1208 mSDsCounter, 0 mSdLazyCounter, 2708 mSolverCounterSat, 564 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1703 SdHoareTripleChecker+Valid, 2101 SdHoareTripleChecker+Invalid, 3272 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 564 IncrementalHoareTripleChecker+Valid, 2708 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:01,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1703 Valid, 2101 Invalid, 3272 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [564 Valid, 2708 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 17:35:01,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 908 states. [2022-07-13 17:35:01,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 908 to 564. [2022-07-13 17:35:01,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6397228637413395) internal successors, (710), 449 states have internal predecessors, (710), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:35:01,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 919 transitions. [2022-07-13 17:35:01,280 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 919 transitions. Word has length 104 [2022-07-13 17:35:01,280 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:01,280 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 919 transitions. [2022-07-13 17:35:01,281 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.857142857142858) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:01,281 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 919 transitions. [2022-07-13 17:35:01,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:35:01,283 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:01,283 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] [2022-07-13 17:35:01,283 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:35:01,283 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:01,284 INFO L85 PathProgramCache]: Analyzing trace with hash -1866795101, now seen corresponding path program 1 times [2022-07-13 17:35:01,284 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:01,284 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1606180139] [2022-07-13 17:35:01,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:01,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:01,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:01,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:01,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:01,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:01,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,541 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:01,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:35:01,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:35:01,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,563 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:35:01,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:35:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:01,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:35:01,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:35:01,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:01,583 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:01,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:01,583 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1606180139] [2022-07-13 17:35:01,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1606180139] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:01,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:01,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:35:01,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387998933] [2022-07-13 17:35:01,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:01,584 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:35:01,584 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:01,585 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:35:01,585 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:01,585 INFO L87 Difference]: Start difference. First operand 564 states and 919 transitions. Second operand has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:35:06,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:06,527 INFO L93 Difference]: Finished difference Result 1474 states and 2477 transitions. [2022-07-13 17:35:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:35:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 105 [2022-07-13 17:35:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:06,533 INFO L225 Difference]: With dead ends: 1474 [2022-07-13 17:35:06,533 INFO L226 Difference]: Without dead ends: 902 [2022-07-13 17:35:06,535 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-13 17:35:06,536 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 1119 mSDsluCounter, 2623 mSDsCounter, 0 mSdLazyCounter, 5435 mSolverCounterSat, 349 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 3527 SdHoareTripleChecker+Invalid, 5784 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 349 IncrementalHoareTripleChecker+Valid, 5435 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:06,536 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 3527 Invalid, 5784 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [349 Valid, 5435 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-07-13 17:35:06,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-13 17:35:06,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2022-07-13 17:35:06,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6323185011709602) internal successors, (697), 443 states have internal predecessors, (697), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:35:06,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 906 transitions. [2022-07-13 17:35:06,639 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 906 transitions. Word has length 105 [2022-07-13 17:35:06,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:06,639 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 906 transitions. [2022-07-13 17:35:06,639 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.555555555555555) internal successors, (77), 6 states have internal predecessors, (77), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:35:06,640 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 906 transitions. [2022-07-13 17:35:06,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-13 17:35:06,641 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:06,641 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] [2022-07-13 17:35:06,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:35:06,642 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:06,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:06,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1252853566, now seen corresponding path program 1 times [2022-07-13 17:35:06,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:06,642 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11559632] [2022-07-13 17:35:06,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:06,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:06,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:06,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:06,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:06,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:06,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:06,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,898 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:35:06,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:35:06,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:35:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-13 17:35:06,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,910 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:06,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 88 [2022-07-13 17:35:06,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:35:06,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:06,921 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:06,921 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:06,921 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11559632] [2022-07-13 17:35:06,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11559632] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:06,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:06,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:35:06,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853428514] [2022-07-13 17:35:06,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:06,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:35:06,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:06,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:35:06,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:35:06,923 INFO L87 Difference]: Start difference. First operand 558 states and 906 transitions. Second operand has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:11,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:11,461 INFO L93 Difference]: Finished difference Result 1444 states and 2430 transitions. [2022-07-13 17:35:11,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:35:11,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 105 [2022-07-13 17:35:11,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:11,466 INFO L225 Difference]: With dead ends: 1444 [2022-07-13 17:35:11,467 INFO L226 Difference]: Without dead ends: 902 [2022-07-13 17:35:11,468 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:35:11,470 INFO L413 NwaCegarLoop]: 890 mSDtfsCounter, 1043 mSDsluCounter, 1271 mSDsCounter, 0 mSdLazyCounter, 2736 mSolverCounterSat, 351 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1153 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 3087 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 351 IncrementalHoareTripleChecker+Valid, 2736 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:11,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1153 Valid, 2161 Invalid, 3087 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [351 Valid, 2736 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 17:35:11,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-13 17:35:11,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2022-07-13 17:35:11,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.629976580796253) internal successors, (696), 443 states have internal predecessors, (696), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:35:11,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 905 transitions. [2022-07-13 17:35:11,558 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 905 transitions. Word has length 105 [2022-07-13 17:35:11,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:11,559 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 905 transitions. [2022-07-13 17:35:11,559 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.0) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:11,559 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 905 transitions. [2022-07-13 17:35:11,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:35:11,561 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:11,561 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] [2022-07-13 17:35:11,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:35:11,561 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:11,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:11,562 INFO L85 PathProgramCache]: Analyzing trace with hash 88617629, now seen corresponding path program 1 times [2022-07-13 17:35:11,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:11,562 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961550307] [2022-07-13 17:35:11,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:11,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:11,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:11,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:11,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:11,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:11,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,758 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:11,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:35:11,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:35:11,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:35:11,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,775 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:35:11,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:11,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,793 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:35:11,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,797 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:35:11,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,798 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:11,798 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:11,798 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961550307] [2022-07-13 17:35:11,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961550307] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:11,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:11,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:35:11,799 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451891715] [2022-07-13 17:35:11,799 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:11,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:35:11,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:11,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:35:11,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:35:11,800 INFO L87 Difference]: Start difference. First operand 558 states and 905 transitions. Second operand has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:15,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:15,360 INFO L93 Difference]: Finished difference Result 1456 states and 2440 transitions. [2022-07-13 17:35:15,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:35:15,360 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2022-07-13 17:35:15,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:15,364 INFO L225 Difference]: With dead ends: 1456 [2022-07-13 17:35:15,364 INFO L226 Difference]: Without dead ends: 914 [2022-07-13 17:35:15,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-07-13 17:35:15,366 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1035 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2784 mSolverCounterSat, 346 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 3130 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 346 IncrementalHoareTripleChecker+Valid, 2784 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:15,367 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 2164 Invalid, 3130 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [346 Valid, 2784 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 17:35:15,368 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 914 states. [2022-07-13 17:35:15,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 914 to 564. [2022-07-13 17:35:15,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 564 states, 433 states have (on average 1.6212471131639723) internal successors, (702), 449 states have internal predecessors, (702), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:35:15,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 564 states to 564 states and 911 transitions. [2022-07-13 17:35:15,436 INFO L78 Accepts]: Start accepts. Automaton has 564 states and 911 transitions. Word has length 106 [2022-07-13 17:35:15,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:15,436 INFO L495 AbstractCegarLoop]: Abstraction has 564 states and 911 transitions. [2022-07-13 17:35:15,436 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 11.142857142857142) internal successors, (78), 4 states have internal predecessors, (78), 2 states have call successors, (14), 5 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2022-07-13 17:35:15,437 INFO L276 IsEmpty]: Start isEmpty. Operand 564 states and 911 transitions. [2022-07-13 17:35:15,438 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-13 17:35:15,438 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:15,438 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] [2022-07-13 17:35:15,438 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:35:15,439 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:15,439 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -878733025, now seen corresponding path program 1 times [2022-07-13 17:35:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:15,439 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [251177219] [2022-07-13 17:35:15,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:15,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:15,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:15,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,637 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:15,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,643 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:15,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:15,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:35:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:35:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:35:15,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:35:15,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:35:15,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 98 [2022-07-13 17:35:15,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:15,727 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:15,728 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:15,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [251177219] [2022-07-13 17:35:15,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [251177219] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:15,728 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:15,728 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-13 17:35:15,728 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1107666128] [2022-07-13 17:35:15,728 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:15,729 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-13 17:35:15,729 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:15,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-13 17:35:15,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:15,730 INFO L87 Difference]: Start difference. First operand 564 states and 911 transitions. Second operand has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:35:20,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:20,241 INFO L93 Difference]: Finished difference Result 1459 states and 2441 transitions. [2022-07-13 17:35:20,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-13 17:35:20,242 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 106 [2022-07-13 17:35:20,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:20,246 INFO L225 Difference]: With dead ends: 1459 [2022-07-13 17:35:20,246 INFO L226 Difference]: Without dead ends: 902 [2022-07-13 17:35:20,248 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=72, Invalid=234, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:35:20,249 INFO L413 NwaCegarLoop]: 909 mSDtfsCounter, 1035 mSDsluCounter, 2817 mSDsCounter, 0 mSdLazyCounter, 5339 mSolverCounterSat, 347 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1146 SdHoareTripleChecker+Valid, 3726 SdHoareTripleChecker+Invalid, 5686 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 347 IncrementalHoareTripleChecker+Valid, 5339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:20,249 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1146 Valid, 3726 Invalid, 5686 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [347 Valid, 5339 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 17:35:20,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 902 states. [2022-07-13 17:35:20,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 902 to 558. [2022-07-13 17:35:20,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 558 states, 427 states have (on average 1.6276346604215457) internal successors, (695), 443 states have internal predecessors, (695), 106 states have call successors, (106), 26 states have call predecessors, (106), 24 states have return successors, (103), 101 states have call predecessors, (103), 103 states have call successors, (103) [2022-07-13 17:35:20,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 558 states to 558 states and 904 transitions. [2022-07-13 17:35:20,333 INFO L78 Accepts]: Start accepts. Automaton has 558 states and 904 transitions. Word has length 106 [2022-07-13 17:35:20,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:20,334 INFO L495 AbstractCegarLoop]: Abstraction has 558 states and 904 transitions. [2022-07-13 17:35:20,334 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.666666666666666) internal successors, (78), 6 states have internal predecessors, (78), 3 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:35:20,334 INFO L276 IsEmpty]: Start isEmpty. Operand 558 states and 904 transitions. [2022-07-13 17:35:20,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-07-13 17:35:20,335 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:20,335 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] [2022-07-13 17:35:20,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:35:20,336 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:20,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:20,336 INFO L85 PathProgramCache]: Analyzing trace with hash 557726952, now seen corresponding path program 1 times [2022-07-13 17:35:20,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:20,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544312725] [2022-07-13 17:35:20,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:20,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:20,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:20,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:20,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:20,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:20,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,564 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:20,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,566 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:20,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:20,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,574 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:35:20,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:35:20,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:20,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:35:20,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:35:20,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:20,590 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:20,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:20,591 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544312725] [2022-07-13 17:35:20,591 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544312725] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:20,591 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:20,591 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:35:20,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192751163] [2022-07-13 17:35:20,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:20,591 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:35:20,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:20,592 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:35:20,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:20,592 INFO L87 Difference]: Start difference. First operand 558 states and 904 transitions. Second operand has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:35:28,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:28,496 INFO L93 Difference]: Finished difference Result 2205 states and 3743 transitions. [2022-07-13 17:35:28,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-07-13 17:35:28,497 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) Word has length 107 [2022-07-13 17:35:28,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:28,505 INFO L225 Difference]: With dead ends: 2205 [2022-07-13 17:35:28,505 INFO L226 Difference]: Without dead ends: 1665 [2022-07-13 17:35:28,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=117, Invalid=303, Unknown=0, NotChecked=0, Total=420 [2022-07-13 17:35:28,509 INFO L413 NwaCegarLoop]: 985 mSDtfsCounter, 2640 mSDsluCounter, 2204 mSDsCounter, 0 mSdLazyCounter, 6090 mSolverCounterSat, 1210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2753 SdHoareTripleChecker+Valid, 3189 SdHoareTripleChecker+Invalid, 7300 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1210 IncrementalHoareTripleChecker+Valid, 6090 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:28,509 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2753 Valid, 3189 Invalid, 7300 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1210 Valid, 6090 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-13 17:35:28,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1665 states. [2022-07-13 17:35:28,684 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1665 to 1047. [2022-07-13 17:35:28,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1047 states, 804 states have (on average 1.592039800995025) internal successors, (1280), 834 states have internal predecessors, (1280), 196 states have call successors, (196), 49 states have call predecessors, (196), 46 states have return successors, (197), 188 states have call predecessors, (197), 192 states have call successors, (197) [2022-07-13 17:35:28,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1047 states to 1047 states and 1673 transitions. [2022-07-13 17:35:28,700 INFO L78 Accepts]: Start accepts. Automaton has 1047 states and 1673 transitions. Word has length 107 [2022-07-13 17:35:28,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:28,701 INFO L495 AbstractCegarLoop]: Abstraction has 1047 states and 1673 transitions. [2022-07-13 17:35:28,701 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 8.777777777777779) internal successors, (79), 5 states have internal predecessors, (79), 4 states have call successors, (14), 6 states have call predecessors, (14), 3 states have return successors, (12), 5 states have call predecessors, (12), 4 states have call successors, (12) [2022-07-13 17:35:28,702 INFO L276 IsEmpty]: Start isEmpty. Operand 1047 states and 1673 transitions. [2022-07-13 17:35:28,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:35:28,715 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:28,715 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] [2022-07-13 17:35:28,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:35:28,715 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:28,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:28,731 INFO L85 PathProgramCache]: Analyzing trace with hash 781983570, now seen corresponding path program 1 times [2022-07-13 17:35:28,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:28,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1545479078] [2022-07-13 17:35:28,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:28,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:28,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:28,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:28,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:35:28,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:35:28,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:35:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:35:28,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:35:28,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,970 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:35:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:28,971 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:35:28,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:28,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1545479078] [2022-07-13 17:35:28,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1545479078] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:35:28,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452374611] [2022-07-13 17:35:28,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:28,972 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:35:28,972 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:35:28,983 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) [2022-07-13 17:35:28,984 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:35:29,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:29,226 INFO L263 TraceCheckSpWp]: Trace formula consists of 1630 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:35:29,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:35:29,357 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:35:29,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:35:29,357 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452374611] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:29,357 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:35:29,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:35:29,358 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270378680] [2022-07-13 17:35:29,358 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:29,358 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:35:29,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:29,359 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:35:29,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:29,359 INFO L87 Difference]: Start difference. First operand 1047 states and 1673 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:35:29,755 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:29,755 INFO L93 Difference]: Finished difference Result 3013 states and 4881 transitions. [2022-07-13 17:35:29,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:35:29,756 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-13 17:35:29,756 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:29,763 INFO L225 Difference]: With dead ends: 3013 [2022-07-13 17:35:29,763 INFO L226 Difference]: Without dead ends: 1984 [2022-07-13 17:35:29,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:29,768 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 830 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 830 SdHoareTripleChecker+Valid, 1845 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:29,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [830 Valid, 1845 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:35:29,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1984 states. [2022-07-13 17:35:30,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1984 to 1923. [2022-07-13 17:35:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1923 states, 1486 states have (on average 1.6096904441453566) internal successors, (2392), 1546 states have internal predecessors, (2392), 349 states have call successors, (349), 88 states have call predecessors, (349), 87 states have return successors, (364), 338 states have call predecessors, (364), 345 states have call successors, (364) [2022-07-13 17:35:30,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1923 states to 1923 states and 3105 transitions. [2022-07-13 17:35:30,076 INFO L78 Accepts]: Start accepts. Automaton has 1923 states and 3105 transitions. Word has length 113 [2022-07-13 17:35:30,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:30,077 INFO L495 AbstractCegarLoop]: Abstraction has 1923 states and 3105 transitions. [2022-07-13 17:35:30,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:35:30,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1923 states and 3105 transitions. [2022-07-13 17:35:30,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2022-07-13 17:35:30,079 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:30,080 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] [2022-07-13 17:35:30,100 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:35:30,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 17:35:30,298 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:30,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:30,298 INFO L85 PathProgramCache]: Analyzing trace with hash -1887158406, now seen corresponding path program 1 times [2022-07-13 17:35:30,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:30,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [305127308] [2022-07-13 17:35:30,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:30,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:30,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,523 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:30,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:30,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:30,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:30,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:30,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:30,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:35:30,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:35:30,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2022-07-13 17:35:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:35:30,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 95 [2022-07-13 17:35:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 105 [2022-07-13 17:35:30,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,563 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:35:30,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:30,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [305127308] [2022-07-13 17:35:30,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [305127308] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:35:30,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [462629239] [2022-07-13 17:35:30,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:30,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:35:30,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:35:30,584 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) [2022-07-13 17:35:30,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:35:30,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:30,813 INFO L263 TraceCheckSpWp]: Trace formula consists of 1631 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:35:30,817 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:35:30,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:35:30,870 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:35:30,870 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [462629239] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:30,871 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:35:30,871 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [9] total 10 [2022-07-13 17:35:30,871 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15614954] [2022-07-13 17:35:30,871 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:30,871 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:35:30,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:30,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:35:30,872 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:30,872 INFO L87 Difference]: Start difference. First operand 1923 states and 3105 transitions. Second operand has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:35:31,265 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:31,265 INFO L93 Difference]: Finished difference Result 4308 states and 6995 transitions. [2022-07-13 17:35:31,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:35:31,268 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 113 [2022-07-13 17:35:31,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:31,277 INFO L225 Difference]: With dead ends: 4308 [2022-07-13 17:35:31,277 INFO L226 Difference]: Without dead ends: 2403 [2022-07-13 17:35:31,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 136 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:31,284 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 829 mSDsluCounter, 797 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 829 SdHoareTripleChecker+Valid, 1784 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:31,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [829 Valid, 1784 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:35:31,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2403 states. [2022-07-13 17:35:31,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2403 to 2356. [2022-07-13 17:35:31,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2356 states, 1824 states have (on average 1.6211622807017543) internal successors, (2957), 1899 states have internal predecessors, (2957), 425 states have call successors, (425), 106 states have call predecessors, (425), 106 states have return successors, (444), 413 states have call predecessors, (444), 421 states have call successors, (444) [2022-07-13 17:35:31,687 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2356 states to 2356 states and 3826 transitions. [2022-07-13 17:35:31,688 INFO L78 Accepts]: Start accepts. Automaton has 2356 states and 3826 transitions. Word has length 113 [2022-07-13 17:35:31,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:31,688 INFO L495 AbstractCegarLoop]: Abstraction has 2356 states and 3826 transitions. [2022-07-13 17:35:31,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.333333333333332) internal successors, (85), 3 states have internal predecessors, (85), 3 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2022-07-13 17:35:31,688 INFO L276 IsEmpty]: Start isEmpty. Operand 2356 states and 3826 transitions. [2022-07-13 17:35:31,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-07-13 17:35:31,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:31,692 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] [2022-07-13 17:35:31,731 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:35:31,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 17:35:31,908 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:31,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:31,909 INFO L85 PathProgramCache]: Analyzing trace with hash -297771821, now seen corresponding path program 1 times [2022-07-13 17:35:31,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:31,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328337397] [2022-07-13 17:35:31,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:31,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:31,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:32,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:32,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:32,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:32,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,151 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:32,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:35:32,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-13 17:35:32,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:35:32,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:35:32,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2022-07-13 17:35:32,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:35:32,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:32,188 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:32,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:32,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328337397] [2022-07-13 17:35:32,189 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328337397] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:32,189 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:32,189 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:35:32,189 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1530293104] [2022-07-13 17:35:32,189 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:32,190 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:35:32,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:32,190 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:35:32,190 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:32,190 INFO L87 Difference]: Start difference. First operand 2356 states and 3826 transitions. Second operand has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 17:35:48,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:48,344 INFO L93 Difference]: Finished difference Result 11810 states and 21519 transitions. [2022-07-13 17:35:48,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 17:35:48,345 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) Word has length 116 [2022-07-13 17:35:48,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:48,401 INFO L225 Difference]: With dead ends: 11810 [2022-07-13 17:35:48,401 INFO L226 Difference]: Without dead ends: 9472 [2022-07-13 17:35:48,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-13 17:35:48,419 INFO L413 NwaCegarLoop]: 1243 mSDtfsCounter, 3988 mSDsluCounter, 3099 mSDsCounter, 0 mSdLazyCounter, 8742 mSolverCounterSat, 2512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 11.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4106 SdHoareTripleChecker+Valid, 4342 SdHoareTripleChecker+Invalid, 11254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2512 IncrementalHoareTripleChecker+Valid, 8742 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 12.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:48,419 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4106 Valid, 4342 Invalid, 11254 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2512 Valid, 8742 Invalid, 0 Unknown, 0 Unchecked, 12.0s Time] [2022-07-13 17:35:48,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9472 states. [2022-07-13 17:35:49,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9472 to 5731. [2022-07-13 17:35:49,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5731 states, 4195 states have (on average 1.5909415971394518) internal successors, (6674), 4500 states have internal predecessors, (6674), 1266 states have call successors, (1266), 206 states have call predecessors, (1266), 269 states have return successors, (2055), 1260 states have call predecessors, (2055), 1260 states have call successors, (2055) [2022-07-13 17:35:50,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5731 states to 5731 states and 9995 transitions. [2022-07-13 17:35:50,011 INFO L78 Accepts]: Start accepts. Automaton has 5731 states and 9995 transitions. Word has length 116 [2022-07-13 17:35:50,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:50,012 INFO L495 AbstractCegarLoop]: Abstraction has 5731 states and 9995 transitions. [2022-07-13 17:35:50,012 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.333333333333334) internal successors, (84), 5 states have internal predecessors, (84), 3 states have call successors, (16), 6 states have call predecessors, (16), 3 states have return successors, (14), 4 states have call predecessors, (14), 3 states have call successors, (14) [2022-07-13 17:35:50,013 INFO L276 IsEmpty]: Start isEmpty. Operand 5731 states and 9995 transitions. [2022-07-13 17:35:50,016 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-07-13 17:35:50,016 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:50,016 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] [2022-07-13 17:35:50,017 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:35:50,017 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:50,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:50,017 INFO L85 PathProgramCache]: Analyzing trace with hash -2005567924, now seen corresponding path program 1 times [2022-07-13 17:35:50,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:50,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [348713727] [2022-07-13 17:35:50,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:50,018 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:50,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:50,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:50,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:50,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:50,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:50,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:50,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:50,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,267 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:50,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:35:50,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,280 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:35:50,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2022-07-13 17:35:50,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:35:50,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:35:50,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:35:50,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:50,296 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:50,296 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:50,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [348713727] [2022-07-13 17:35:50,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [348713727] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:50,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:50,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:35:50,297 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1763614264] [2022-07-13 17:35:50,297 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:50,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:35:50,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:50,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:35:50,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:35:50,298 INFO L87 Difference]: Start difference. First operand 5731 states and 9995 transitions. Second operand has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 17:35:56,025 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:56,026 INFO L93 Difference]: Finished difference Result 12903 states and 22975 transitions. [2022-07-13 17:35:56,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:35:56,026 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) Word has length 117 [2022-07-13 17:35:56,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:56,059 INFO L225 Difference]: With dead ends: 12903 [2022-07-13 17:35:56,060 INFO L226 Difference]: Without dead ends: 7190 [2022-07-13 17:35:56,090 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:35:56,091 INFO L413 NwaCegarLoop]: 908 mSDtfsCounter, 1030 mSDsluCounter, 1263 mSDsCounter, 0 mSdLazyCounter, 2773 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1141 SdHoareTripleChecker+Valid, 2171 SdHoareTripleChecker+Invalid, 3111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2773 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:56,091 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1141 Valid, 2171 Invalid, 3111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2773 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:35:56,096 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7190 states. [2022-07-13 17:35:57,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7190 to 5739. [2022-07-13 17:35:57,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5739 states, 4201 states have (on average 1.5896215186860272) internal successors, (6678), 4506 states have internal predecessors, (6678), 1266 states have call successors, (1266), 210 states have call predecessors, (1266), 271 states have return successors, (2045), 1258 states have call predecessors, (2045), 1260 states have call successors, (2045) [2022-07-13 17:35:57,473 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5739 states to 5739 states and 9989 transitions. [2022-07-13 17:35:57,474 INFO L78 Accepts]: Start accepts. Automaton has 5739 states and 9989 transitions. Word has length 117 [2022-07-13 17:35:57,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:57,475 INFO L495 AbstractCegarLoop]: Abstraction has 5739 states and 9989 transitions. [2022-07-13 17:35:57,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.142857142857142) internal successors, (85), 4 states have internal predecessors, (85), 2 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (14), 2 states have call predecessors, (14), 2 states have call successors, (14) [2022-07-13 17:35:57,475 INFO L276 IsEmpty]: Start isEmpty. Operand 5739 states and 9989 transitions. [2022-07-13 17:35:57,478 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2022-07-13 17:35:57,478 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:57,479 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] [2022-07-13 17:35:57,479 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:35:57,479 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:57,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:57,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1827402344, now seen corresponding path program 1 times [2022-07-13 17:35:57,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:57,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [637524360] [2022-07-13 17:35:57,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:57,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:57,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,635 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:57,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:57,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:57,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:57,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:57,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:57,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:35:57,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-13 17:35:57,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:35:57,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:35:57,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:35:57,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-13 17:35:57,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2022-07-13 17:35:57,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:57,773 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:35:57,774 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:57,774 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [637524360] [2022-07-13 17:35:57,774 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [637524360] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:57,774 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:57,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-13 17:35:57,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304950803] [2022-07-13 17:35:57,774 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:57,775 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-13 17:35:57,775 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:57,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-13 17:35:57,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:35:57,775 INFO L87 Difference]: Start difference. First operand 5739 states and 9989 transitions. Second operand has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 17:36:16,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:16,773 INFO L93 Difference]: Finished difference Result 24655 states and 47291 transitions. [2022-07-13 17:36:16,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-13 17:36:16,774 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) Word has length 126 [2022-07-13 17:36:16,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:16,881 INFO L225 Difference]: With dead ends: 24655 [2022-07-13 17:36:16,881 INFO L226 Difference]: Without dead ends: 18934 [2022-07-13 17:36:16,925 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 204 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=216, Invalid=776, Unknown=0, NotChecked=0, Total=992 [2022-07-13 17:36:16,926 INFO L413 NwaCegarLoop]: 1252 mSDtfsCounter, 5150 mSDsluCounter, 4671 mSDsCounter, 0 mSdLazyCounter, 11601 mSolverCounterSat, 3084 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5267 SdHoareTripleChecker+Valid, 5923 SdHoareTripleChecker+Invalid, 14685 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3084 IncrementalHoareTripleChecker+Valid, 11601 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.9s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:16,926 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5267 Valid, 5923 Invalid, 14685 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3084 Valid, 11601 Invalid, 0 Unknown, 0 Unchecked, 10.9s Time] [2022-07-13 17:36:16,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18934 states. [2022-07-13 17:36:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18934 to 11405. [2022-07-13 17:36:19,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11405 states, 8361 states have (on average 1.5836622413586892) internal successors, (13241), 8966 states have internal predecessors, (13241), 2496 states have call successors, (2496), 414 states have call predecessors, (2496), 547 states have return successors, (4502), 2490 states have call predecessors, (4502), 2486 states have call successors, (4502) [2022-07-13 17:36:20,003 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11405 states to 11405 states and 20239 transitions. [2022-07-13 17:36:20,005 INFO L78 Accepts]: Start accepts. Automaton has 11405 states and 20239 transitions. Word has length 126 [2022-07-13 17:36:20,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:20,005 INFO L495 AbstractCegarLoop]: Abstraction has 11405 states and 20239 transitions. [2022-07-13 17:36:20,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.272727272727273) internal successors, (91), 7 states have internal predecessors, (91), 3 states have call successors, (17), 6 states have call predecessors, (17), 4 states have return successors, (15), 4 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-13 17:36:20,005 INFO L276 IsEmpty]: Start isEmpty. Operand 11405 states and 20239 transitions. [2022-07-13 17:36:20,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-13 17:36:20,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:20,009 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] [2022-07-13 17:36:20,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:36:20,009 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:20,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:20,010 INFO L85 PathProgramCache]: Analyzing trace with hash 43838476, now seen corresponding path program 1 times [2022-07-13 17:36:20,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:20,010 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536935646] [2022-07-13 17:36:20,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:20,010 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:20,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:20,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:20,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:20,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,231 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:20,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:20,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:36:20,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:36:20,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:36:20,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-13 17:36:20,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-13 17:36:20,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:20,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:36:20,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-13 17:36:20,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:36:20,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:20,273 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 17:36:20,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:20,273 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536935646] [2022-07-13 17:36:20,273 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536935646] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:20,273 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:20,273 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:36:20,273 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1303614546] [2022-07-13 17:36:20,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:20,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:36:20,274 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:20,275 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:36:20,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:36:20,275 INFO L87 Difference]: Start difference. First operand 11405 states and 20239 transitions. Second operand has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 17:36:28,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:28,731 INFO L93 Difference]: Finished difference Result 25551 states and 47057 transitions. [2022-07-13 17:36:28,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:36:28,732 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 128 [2022-07-13 17:36:28,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:28,803 INFO L225 Difference]: With dead ends: 25551 [2022-07-13 17:36:28,803 INFO L226 Difference]: Without dead ends: 14164 [2022-07-13 17:36:28,883 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:36:28,884 INFO L413 NwaCegarLoop]: 911 mSDtfsCounter, 1035 mSDsluCounter, 1275 mSDsCounter, 0 mSdLazyCounter, 2774 mSolverCounterSat, 338 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1148 SdHoareTripleChecker+Valid, 2186 SdHoareTripleChecker+Invalid, 3112 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 338 IncrementalHoareTripleChecker+Valid, 2774 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:28,884 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1148 Valid, 2186 Invalid, 3112 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [338 Valid, 2774 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 17:36:28,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14164 states. [2022-07-13 17:36:31,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14164 to 11445. [2022-07-13 17:36:31,818 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11445 states, 8397 states have (on average 1.5816362986780994) internal successors, (13281), 8994 states have internal predecessors, (13281), 2496 states have call successors, (2496), 430 states have call predecessors, (2496), 551 states have return successors, (4488), 2486 states have call predecessors, (4488), 2486 states have call successors, (4488) [2022-07-13 17:36:31,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11445 states to 11445 states and 20265 transitions. [2022-07-13 17:36:31,896 INFO L78 Accepts]: Start accepts. Automaton has 11445 states and 20265 transitions. Word has length 128 [2022-07-13 17:36:31,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:31,896 INFO L495 AbstractCegarLoop]: Abstraction has 11445 states and 20265 transitions. [2022-07-13 17:36:31,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.428571428571429) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 5 states have call predecessors, (17), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-13 17:36:31,896 INFO L276 IsEmpty]: Start isEmpty. Operand 11445 states and 20265 transitions. [2022-07-13 17:36:31,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 17:36:31,901 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:31,901 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:31,901 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:36:31,901 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:31,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:31,902 INFO L85 PathProgramCache]: Analyzing trace with hash 202275201, now seen corresponding path program 1 times [2022-07-13 17:36:31,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:31,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975178603] [2022-07-13 17:36:31,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:31,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:31,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:32,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:32,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,120 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:32,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,126 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:32,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:36:32,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:36:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:36:32,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:36:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:36:32,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:36:32,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,157 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:36:32,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-13 17:36:32,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:36:32,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:32,167 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:36:32,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:32,167 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975178603] [2022-07-13 17:36:32,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975178603] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:32,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:32,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:36:32,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [704670000] [2022-07-13 17:36:32,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:32,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:36:32,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:32,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:36:32,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:36:32,169 INFO L87 Difference]: Start difference. First operand 11445 states and 20265 transitions. Second operand has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:36:58,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:58,591 INFO L93 Difference]: Finished difference Result 49152 states and 99922 transitions. [2022-07-13 17:36:58,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 17:36:58,592 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) Word has length 137 [2022-07-13 17:36:58,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:58,890 INFO L225 Difference]: With dead ends: 49152 [2022-07-13 17:36:58,890 INFO L226 Difference]: Without dead ends: 37725 [2022-07-13 17:36:59,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-13 17:36:59,005 INFO L413 NwaCegarLoop]: 1292 mSDtfsCounter, 5009 mSDsluCounter, 3128 mSDsCounter, 0 mSdLazyCounter, 8384 mSolverCounterSat, 2953 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5127 SdHoareTripleChecker+Valid, 4420 SdHoareTripleChecker+Invalid, 11337 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2953 IncrementalHoareTripleChecker+Valid, 8384 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:59,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5127 Valid, 4420 Invalid, 11337 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2953 Valid, 8384 Invalid, 0 Unknown, 0 Unchecked, 11.0s Time] [2022-07-13 17:36:59,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37725 states. [2022-07-13 17:37:05,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37725 to 22848. [2022-07-13 17:37:05,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22848 states, 16765 states have (on average 1.5781688040560693) internal successors, (26458), 17954 states have internal predecessors, (26458), 4971 states have call successors, (4971), 854 states have call predecessors, (4971), 1111 states have return successors, (10181), 4965 states have call predecessors, (10181), 4953 states have call successors, (10181) [2022-07-13 17:37:05,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22848 states to 22848 states and 41610 transitions. [2022-07-13 17:37:05,958 INFO L78 Accepts]: Start accepts. Automaton has 22848 states and 41610 transitions. Word has length 137 [2022-07-13 17:37:05,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:05,959 INFO L495 AbstractCegarLoop]: Abstraction has 22848 states and 41610 transitions. [2022-07-13 17:37:05,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.777777777777779) internal successors, (97), 5 states have internal predecessors, (97), 3 states have call successors, (18), 6 states have call predecessors, (18), 3 states have return successors, (16), 4 states have call predecessors, (16), 3 states have call successors, (16) [2022-07-13 17:37:05,959 INFO L276 IsEmpty]: Start isEmpty. Operand 22848 states and 41610 transitions. [2022-07-13 17:37:05,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-13 17:37:05,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:05,964 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:05,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:37:05,964 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:05,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:05,965 INFO L85 PathProgramCache]: Analyzing trace with hash -1534827314, now seen corresponding path program 1 times [2022-07-13 17:37:05,965 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:05,965 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [670690671] [2022-07-13 17:37:05,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:05,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:06,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,214 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:06,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:06,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:37:06,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,312 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:06,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:37:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:37:06,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:37:06,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,317 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:37:06,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-13 17:37:06,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:37:06,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:37:06,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-13 17:37:06,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 130 [2022-07-13 17:37:06,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:06,359 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:37:06,359 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:06,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [670690671] [2022-07-13 17:37:06,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [670690671] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:06,360 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:06,360 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:37:06,360 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1334794513] [2022-07-13 17:37:06,360 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:06,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:37:06,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:06,362 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:37:06,362 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:37:06,362 INFO L87 Difference]: Start difference. First operand 22848 states and 41610 transitions. Second operand has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:37:18,978 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:18,978 INFO L93 Difference]: Finished difference Result 51077 states and 99377 transitions. [2022-07-13 17:37:18,979 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-13 17:37:18,979 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 138 [2022-07-13 17:37:18,981 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:19,152 INFO L225 Difference]: With dead ends: 51077 [2022-07-13 17:37:19,152 INFO L226 Difference]: Without dead ends: 28247 [2022-07-13 17:37:19,381 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=42, Invalid=68, Unknown=0, NotChecked=0, Total=110 [2022-07-13 17:37:19,382 INFO L413 NwaCegarLoop]: 910 mSDtfsCounter, 2074 mSDsluCounter, 1181 mSDsCounter, 0 mSdLazyCounter, 2579 mSolverCounterSat, 739 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2186 SdHoareTripleChecker+Valid, 2091 SdHoareTripleChecker+Invalid, 3318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 739 IncrementalHoareTripleChecker+Valid, 2579 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:19,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2186 Valid, 2091 Invalid, 3318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [739 Valid, 2579 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 17:37:19,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28247 states. [2022-07-13 17:37:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28247 to 22928. [2022-07-13 17:37:25,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22928 states, 16837 states have (on average 1.57617152699412) internal successors, (26538), 18026 states have internal predecessors, (26538), 4971 states have call successors, (4971), 870 states have call predecessors, (4971), 1119 states have return successors, (10165), 4957 states have call predecessors, (10165), 4953 states have call successors, (10165) [2022-07-13 17:37:26,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22928 states to 22928 states and 41674 transitions. [2022-07-13 17:37:26,166 INFO L78 Accepts]: Start accepts. Automaton has 22928 states and 41674 transitions. Word has length 138 [2022-07-13 17:37:26,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:26,166 INFO L495 AbstractCegarLoop]: Abstraction has 22928 states and 41674 transitions. [2022-07-13 17:37:26,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 14.285714285714286) internal successors, (100), 4 states have internal predecessors, (100), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-13 17:37:26,166 INFO L276 IsEmpty]: Start isEmpty. Operand 22928 states and 41674 transitions. [2022-07-13 17:37:26,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 150 [2022-07-13 17:37:26,172 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:26,172 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:26,172 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:37:26,173 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:26,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:26,183 INFO L85 PathProgramCache]: Analyzing trace with hash -269533144, now seen corresponding path program 1 times [2022-07-13 17:37:26,183 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:26,184 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1580652881] [2022-07-13 17:37:26,184 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:26,184 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:26,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:26,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:37:26,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:26,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,428 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:26,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:26,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:37:26,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,432 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:37:26,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:37:26,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,435 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:37:26,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:37:26,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-13 17:37:26,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2022-07-13 17:37:26,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:37:26,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:37:26,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 132 [2022-07-13 17:37:26,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 141 [2022-07-13 17:37:26,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:26,462 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:37:26,462 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:26,462 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1580652881] [2022-07-13 17:37:26,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1580652881] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:26,462 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:26,462 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:37:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818210096] [2022-07-13 17:37:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:37:26,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:26,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:37:26,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:37:26,465 INFO L87 Difference]: Start difference. First operand 22928 states and 41674 transitions. Second operand has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:38:08,473 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:38:08,473 INFO L93 Difference]: Finished difference Result 93670 states and 207333 transitions. [2022-07-13 17:38:08,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2022-07-13 17:38:08,475 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) Word has length 149 [2022-07-13 17:38:08,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:38:09,241 INFO L225 Difference]: With dead ends: 93670 [2022-07-13 17:38:09,242 INFO L226 Difference]: Without dead ends: 70760 [2022-07-13 17:38:09,474 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=446, Unknown=0, NotChecked=0, Total=600 [2022-07-13 17:38:09,475 INFO L413 NwaCegarLoop]: 1310 mSDtfsCounter, 3932 mSDsluCounter, 3298 mSDsCounter, 0 mSdLazyCounter, 8787 mSolverCounterSat, 2498 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 10.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4050 SdHoareTripleChecker+Valid, 4608 SdHoareTripleChecker+Invalid, 11285 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2498 IncrementalHoareTripleChecker+Valid, 8787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 11.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:38:09,475 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4050 Valid, 4608 Invalid, 11285 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2498 Valid, 8787 Invalid, 0 Unknown, 0 Unchecked, 11.5s Time] [2022-07-13 17:38:09,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70760 states. [2022-07-13 17:38:23,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70760 to 45871. [2022-07-13 17:38:23,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 45871 states, 33689 states have (on average 1.5731841253821721) internal successors, (52999), 36062 states have internal predecessors, (52999), 9926 states have call successors, (9926), 1734 states have call predecessors, (9926), 2255 states have return successors, (24102), 9920 states have call predecessors, (24102), 9892 states have call successors, (24102) [2022-07-13 17:38:24,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45871 states to 45871 states and 87027 transitions. [2022-07-13 17:38:24,359 INFO L78 Accepts]: Start accepts. Automaton has 45871 states and 87027 transitions. Word has length 149 [2022-07-13 17:38:24,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:38:24,359 INFO L495 AbstractCegarLoop]: Abstraction has 45871 states and 87027 transitions. [2022-07-13 17:38:24,359 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 11.444444444444445) internal successors, (103), 5 states have internal predecessors, (103), 3 states have call successors, (19), 6 states have call predecessors, (19), 3 states have return successors, (17), 4 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-13 17:38:24,359 INFO L276 IsEmpty]: Start isEmpty. Operand 45871 states and 87027 transitions. [2022-07-13 17:38:24,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-13 17:38:24,366 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:38:24,367 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:38:24,367 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:38:24,367 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:38:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:38:24,367 INFO L85 PathProgramCache]: Analyzing trace with hash 2146865552, now seen corresponding path program 1 times [2022-07-13 17:38:24,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:38:24,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [64732122] [2022-07-13 17:38:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:38:24,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:38:24,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:38:24,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,597 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:38:24,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:38:24,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:38:24,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:38:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,607 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:38:24,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:38:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:38:24,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:38:24,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:38:24,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-13 17:38:24,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2022-07-13 17:38:24,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:38:24,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-13 17:38:24,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-13 17:38:24,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-13 17:38:24,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:38:24,667 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:38:24,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:38:24,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [64732122] [2022-07-13 17:38:24,668 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [64732122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:38:24,668 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:38:24,668 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-13 17:38:24,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134161817] [2022-07-13 17:38:24,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:38:24,669 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-13 17:38:24,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:38:24,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-13 17:38:24,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-13 17:38:24,670 INFO L87 Difference]: Start difference. First operand 45871 states and 87027 transitions. Second operand has 7 states, 7 states have (on average 15.285714285714286) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (19), 5 states have call predecessors, (19), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17)