./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec2_product01.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 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 16:49:47,782 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 16:49:47,783 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 16:49:47,809 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 16:49:47,810 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 16:49:47,811 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 16:49:47,812 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 16:49:47,814 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 16:49:47,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 16:49:47,816 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 16:49:47,817 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 16:49:47,818 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 16:49:47,818 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 16:49:47,819 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 16:49:47,820 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 16:49:47,821 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 16:49:47,822 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 16:49:47,823 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 16:49:47,825 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 16:49:47,826 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 16:49:47,827 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 16:49:47,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 16:49:47,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 16:49:47,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 16:49:47,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 16:49:47,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 16:49:47,847 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 16:49:47,847 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 16:49:47,848 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 16:49:47,849 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 16:49:47,850 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 16:49:47,850 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 16:49:47,852 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 16:49:47,853 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 16:49:47,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 16:49:47,855 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 16:49:47,855 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 16:49:47,856 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 16:49:47,856 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 16:49:47,857 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 16:49:47,857 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 16:49:47,858 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 16:49:47,859 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 16:49:47,893 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 16:49:47,894 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 16:49:47,894 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 16:49:47,894 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 16:49:47,895 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 16:49:47,895 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 16:49:47,895 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 16:49:47,896 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 16:49:47,896 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 16:49:47,896 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 16:49:47,896 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 16:49:47,896 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 16:49:47,896 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 16:49:47,897 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 16:49:47,898 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 16:49:47,898 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 16:49:47,898 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 16:49:47,898 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 16:49:47,898 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:49:47,898 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 16:49:47,899 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 16:49:47,899 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 16:49:47,905 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 16:49:47,906 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 16:49:47,906 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 16:49:47,906 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 16:49:47,906 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 16:49:47,906 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8190dbbeca15ebdc96e247bb91a06680a00a60089c25180495df59d4a11849af [2022-07-19 16:49:48,134 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 16:49:48,152 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 16:49:48,154 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 16:49:48,155 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 16:49:48,156 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 16:49:48,157 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2022-07-19 16:49:48,208 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a55c8085/1dead226bf8944088ea0dc7092aecc10/FLAG9ed458f59 [2022-07-19 16:49:48,660 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 16:49:48,661 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c [2022-07-19 16:49:48,682 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a55c8085/1dead226bf8944088ea0dc7092aecc10/FLAG9ed458f59 [2022-07-19 16:49:48,958 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5a55c8085/1dead226bf8944088ea0dc7092aecc10 [2022-07-19 16:49:48,960 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 16:49:48,962 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 16:49:48,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 16:49:48,964 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 16:49:48,967 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 16:49:48,968 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:49:48" (1/1) ... [2022-07-19 16:49:48,969 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20c6721c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:48, skipping insertion in model container [2022-07-19 16:49:48,969 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 04:49:48" (1/1) ... [2022-07-19 16:49:48,979 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 16:49:49,038 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 16:49:49,223 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2022-07-19 16:49:49,573 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:49:49,585 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 16:49:49,597 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec2_product01.cil.c[1545,1558] [2022-07-19 16:49:49,686 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 16:49:49,715 INFO L208 MainTranslator]: Completed translation [2022-07-19 16:49:49,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49 WrapperNode [2022-07-19 16:49:49,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 16:49:49,717 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 16:49:49,717 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 16:49:49,717 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 16:49:49,728 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,751 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,803 INFO L137 Inliner]: procedures = 88, calls = 328, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 754 [2022-07-19 16:49:49,805 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 16:49:49,806 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 16:49:49,806 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 16:49:49,807 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 16:49:49,814 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,814 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,841 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,862 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,894 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,899 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,922 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 16:49:49,923 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 16:49:49,923 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 16:49:49,923 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 16:49:49,924 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (1/1) ... [2022-07-19 16:49:49,943 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 16:49:49,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:49:49,976 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 16:49:49,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 16:49:50,015 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 16:49:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-19 16:49:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-19 16:49:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-19 16:49:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-19 16:49:50,016 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-19 16:49:50,016 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-19 16:49:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-19 16:49:50,017 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-19 16:49:50,017 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-19 16:49:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-19 16:49:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-19 16:49:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-19 16:49:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-19 16:49:50,018 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-19 16:49:50,018 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-19 16:49:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-19 16:49:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-19 16:49:50,019 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-19 16:49:50,019 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-19 16:49:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-19 16:49:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-19 16:49:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-19 16:49:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-19 16:49:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-19 16:49:50,020 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-19 16:49:50,020 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-19 16:49:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-19 16:49:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-19 16:49:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-19 16:49:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-19 16:49:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-19 16:49:50,021 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-19 16:49:50,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 16:49:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-19 16:49:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-19 16:49:50,022 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-19 16:49:50,022 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-19 16:49:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-19 16:49:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-19 16:49:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 16:49:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 16:49:50,023 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-19 16:49:50,023 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-19 16:49:50,192 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 16:49:50,193 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 16:49:51,153 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 16:49:51,169 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 16:49:51,169 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 16:49:51,172 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:49:51 BoogieIcfgContainer [2022-07-19 16:49:51,172 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 16:49:51,173 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 16:49:51,173 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 16:49:51,176 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 16:49:51,177 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 04:49:48" (1/3) ... [2022-07-19 16:49:51,178 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784c2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:49:51, skipping insertion in model container [2022-07-19 16:49:51,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 04:49:49" (2/3) ... [2022-07-19 16:49:51,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@784c2e3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 04:49:51, skipping insertion in model container [2022-07-19 16:49:51,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 04:49:51" (3/3) ... [2022-07-19 16:49:51,180 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product01.cil.c [2022-07-19 16:49:51,193 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 16:49:51,194 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 16:49:51,274 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 16:49:51,283 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@3cc899f6, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1d10145b [2022-07-19 16:49:51,283 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 16:49:51,305 INFO L276 IsEmpty]: Start isEmpty. Operand has 517 states, 409 states have (on average 1.7163814180929096) internal successors, (702), 430 states have internal predecessors, (702), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) [2022-07-19 16:49:51,336 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-19 16:49:51,337 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:49:51,337 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:49:51,338 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:49:51,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:49:51,344 INFO L85 PathProgramCache]: Analyzing trace with hash 998203465, now seen corresponding path program 1 times [2022-07-19 16:49:51,352 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:49:51,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1844412652] [2022-07-19 16:49:51,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:49:51,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:49:51,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:51,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:49:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:51,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:49:51,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:51,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-19 16:49:51,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2022-07-19 16:49:52,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:49:52,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:49:52,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:49:52,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2022-07-19 16:49:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:52,206 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:49:52,207 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:49:52,207 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1844412652] [2022-07-19 16:49:52,208 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1844412652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:49:52,208 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:49:52,209 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:49:52,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1053687108] [2022-07-19 16:49:52,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:49:52,215 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:49:52,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:49:52,239 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:49:52,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:49:52,243 INFO L87 Difference]: Start difference. First operand has 517 states, 409 states have (on average 1.7163814180929096) internal successors, (702), 430 states have internal predecessors, (702), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (86), 80 states have call predecessors, (86), 86 states have call successors, (86) Second operand has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 16:49:59,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:49:59,415 INFO L93 Difference]: Finished difference Result 1472 states and 2596 transitions. [2022-07-19 16:49:59,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:49:59,418 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 74 [2022-07-19 16:49:59,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:49:59,442 INFO L225 Difference]: With dead ends: 1472 [2022-07-19 16:49:59,443 INFO L226 Difference]: Without dead ends: 967 [2022-07-19 16:49:59,451 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:49:59,454 INFO L413 NwaCegarLoop]: 924 mSDtfsCounter, 2147 mSDsluCounter, 2267 mSDsCounter, 0 mSdLazyCounter, 4302 mSolverCounterSat, 1000 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2217 SdHoareTripleChecker+Valid, 3191 SdHoareTripleChecker+Invalid, 5302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1000 IncrementalHoareTripleChecker+Valid, 4302 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 16:49:59,455 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2217 Valid, 3191 Invalid, 5302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1000 Valid, 4302 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 16:49:59,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 967 states. [2022-07-19 16:49:59,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 967 to 511. [2022-07-19 16:49:59,635 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 511 states, 405 states have (on average 1.708641975308642) internal successors, (692), 424 states have internal predecessors, (692), 86 states have call successors, (86), 20 states have call predecessors, (86), 19 states have return successors, (81), 79 states have call predecessors, (81), 81 states have call successors, (81) [2022-07-19 16:49:59,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 511 states to 511 states and 859 transitions. [2022-07-19 16:49:59,646 INFO L78 Accepts]: Start accepts. Automaton has 511 states and 859 transitions. Word has length 74 [2022-07-19 16:49:59,646 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:49:59,647 INFO L495 AbstractCegarLoop]: Abstraction has 511 states and 859 transitions. [2022-07-19 16:49:59,647 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 6.333333333333333) internal successors, (57), 6 states have internal predecessors, (57), 2 states have call successors, (9), 5 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 16:49:59,648 INFO L276 IsEmpty]: Start isEmpty. Operand 511 states and 859 transitions. [2022-07-19 16:49:59,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-07-19 16:49:59,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:49:59,660 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:49:59,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 16:49:59,661 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:49:59,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:49:59,662 INFO L85 PathProgramCache]: Analyzing trace with hash 338744733, now seen corresponding path program 1 times [2022-07-19 16:49:59,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:49:59,662 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3939228] [2022-07-19 16:49:59,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:49:59,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:49:59,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:59,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:49:59,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:59,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:49:59,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:49:59,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:49:59,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:00,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:00,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:00,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:00,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:00,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:50:00,165 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:00,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3939228] [2022-07-19 16:50:00,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3939228] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:00,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:00,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:50:00,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [825587787] [2022-07-19 16:50:00,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:00,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:50:00,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:00,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:50:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:00,169 INFO L87 Difference]: Start difference. First operand 511 states and 859 transitions. Second operand has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 16:50:05,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:05,642 INFO L93 Difference]: Finished difference Result 1297 states and 2230 transitions. [2022-07-19 16:50:05,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-19 16:50:05,643 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 80 [2022-07-19 16:50:05,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:05,649 INFO L225 Difference]: With dead ends: 1297 [2022-07-19 16:50:05,650 INFO L226 Difference]: Without dead ends: 804 [2022-07-19 16:50:05,653 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2022-07-19 16:50:05,654 INFO L413 NwaCegarLoop]: 952 mSDtfsCounter, 1784 mSDsluCounter, 2873 mSDsCounter, 0 mSdLazyCounter, 4577 mSolverCounterSat, 581 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1852 SdHoareTripleChecker+Valid, 3825 SdHoareTripleChecker+Invalid, 5158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 581 IncrementalHoareTripleChecker+Valid, 4577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:05,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1852 Valid, 3825 Invalid, 5158 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [581 Valid, 4577 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 16:50:05,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 804 states. [2022-07-19 16:50:05,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 804 to 515. [2022-07-19 16:50:05,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 515 states, 408 states have (on average 1.7009803921568627) internal successors, (694), 427 states have internal predecessors, (694), 86 states have call successors, (86), 20 states have call predecessors, (86), 20 states have return successors, (83), 80 states have call predecessors, (83), 81 states have call successors, (83) [2022-07-19 16:50:05,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 515 states to 515 states and 863 transitions. [2022-07-19 16:50:05,715 INFO L78 Accepts]: Start accepts. Automaton has 515 states and 863 transitions. Word has length 80 [2022-07-19 16:50:05,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:05,716 INFO L495 AbstractCegarLoop]: Abstraction has 515 states and 863 transitions. [2022-07-19 16:50:05,716 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 6.3) internal successors, (63), 6 states have internal predecessors, (63), 2 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-19 16:50:05,716 INFO L276 IsEmpty]: Start isEmpty. Operand 515 states and 863 transitions. [2022-07-19 16:50:05,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-07-19 16:50:05,719 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:05,719 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:05,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 16:50:05,720 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:05,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:05,720 INFO L85 PathProgramCache]: Analyzing trace with hash -537802473, now seen corresponding path program 1 times [2022-07-19 16:50:05,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:05,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910953007] [2022-07-19 16:50:05,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:05,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:05,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:05,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:05,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:05,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:05,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:05,857 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-19 16:50:05,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-19 16:50:06,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:06,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:06,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-19 16:50:06,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:06,113 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:50:06,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:06,114 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910953007] [2022-07-19 16:50:06,114 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910953007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:06,114 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:06,114 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:50:06,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1712225660] [2022-07-19 16:50:06,115 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:06,115 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:50:06,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:06,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:50:06,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:06,116 INFO L87 Difference]: Start difference. First operand 515 states and 863 transitions. Second operand has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 16:50:18,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:18,318 INFO L93 Difference]: Finished difference Result 2404 states and 4293 transitions. [2022-07-19 16:50:18,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 16:50:18,319 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) Word has length 85 [2022-07-19 16:50:18,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:18,333 INFO L225 Difference]: With dead ends: 2404 [2022-07-19 16:50:18,334 INFO L226 Difference]: Without dead ends: 1907 [2022-07-19 16:50:18,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=260, Invalid=670, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:50:18,341 INFO L413 NwaCegarLoop]: 1036 mSDtfsCounter, 3532 mSDsluCounter, 3799 mSDsCounter, 0 mSdLazyCounter, 8296 mSolverCounterSat, 1496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3608 SdHoareTripleChecker+Valid, 4835 SdHoareTripleChecker+Invalid, 9792 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1496 IncrementalHoareTripleChecker+Valid, 8296 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:18,341 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3608 Valid, 4835 Invalid, 9792 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1496 Valid, 8296 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 16:50:18,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1907 states. [2022-07-19 16:50:18,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1907 to 1350. [2022-07-19 16:50:18,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1058 states have (on average 1.658790170132325) internal successors, (1755), 1105 states have internal predecessors, (1755), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2022-07-19 16:50:18,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2259 transitions. [2022-07-19 16:50:18,525 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2259 transitions. Word has length 85 [2022-07-19 16:50:18,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:18,525 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 2259 transitions. [2022-07-19 16:50:18,526 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.181818181818182) internal successors, (68), 8 states have internal predecessors, (68), 3 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (8), 2 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-19 16:50:18,526 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2259 transitions. [2022-07-19 16:50:18,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-19 16:50:18,529 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:18,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:50:18,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 16:50:18,529 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:18,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:18,530 INFO L85 PathProgramCache]: Analyzing trace with hash -1116874395, now seen corresponding path program 1 times [2022-07-19 16:50:18,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:18,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [828618326] [2022-07-19 16:50:18,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:18,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:18,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:18,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:18,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-19 16:50:18,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-19 16:50:18,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:18,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:18,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:18,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:50:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,978 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:50:18,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:18,982 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 16:50:18,982 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:18,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [828618326] [2022-07-19 16:50:18,983 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [828618326] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:18,983 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:18,983 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-07-19 16:50:18,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147060686] [2022-07-19 16:50:18,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:18,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-19 16:50:18,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:18,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-19 16:50:18,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:18,985 INFO L87 Difference]: Start difference. First operand 1350 states and 2259 transitions. Second operand has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:50:24,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:24,227 INFO L93 Difference]: Finished difference Result 3343 states and 5806 transitions. [2022-07-19 16:50:24,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-19 16:50:24,227 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 94 [2022-07-19 16:50:24,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:24,243 INFO L225 Difference]: With dead ends: 3343 [2022-07-19 16:50:24,243 INFO L226 Difference]: Without dead ends: 1870 [2022-07-19 16:50:24,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:50:24,261 INFO L413 NwaCegarLoop]: 904 mSDtfsCounter, 2035 mSDsluCounter, 2737 mSDsCounter, 0 mSdLazyCounter, 4411 mSolverCounterSat, 490 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 3641 SdHoareTripleChecker+Invalid, 4901 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 490 IncrementalHoareTripleChecker+Valid, 4411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:24,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 3641 Invalid, 4901 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [490 Valid, 4411 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-19 16:50:24,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-07-19 16:50:24,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1350. [2022-07-19 16:50:24,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1058 states have (on average 1.6417769376181475) internal successors, (1737), 1105 states have internal predecessors, (1737), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2022-07-19 16:50:24,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2241 transitions. [2022-07-19 16:50:24,484 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2241 transitions. Word has length 94 [2022-07-19 16:50:24,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:24,484 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 2241 transitions. [2022-07-19 16:50:24,485 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 6.818181818181818) internal successors, (75), 7 states have internal predecessors, (75), 3 states have call successors, (10), 5 states have call predecessors, (10), 4 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-19 16:50:24,485 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2241 transitions. [2022-07-19 16:50:24,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-19 16:50:24,493 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:24,493 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] [2022-07-19 16:50:24,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 16:50:24,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:24,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:24,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1269794296, now seen corresponding path program 1 times [2022-07-19 16:50:24,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:24,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2034345514] [2022-07-19 16:50:24,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:24,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:24,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:24,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:24,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,625 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-19 16:50:24,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-19 16:50:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:24,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:24,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:24,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:24,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:24,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:24,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:24,819 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:24,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:24,820 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2034345514] [2022-07-19 16:50:24,820 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2034345514] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:24,820 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:24,820 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:24,820 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1512361119] [2022-07-19 16:50:24,820 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:24,821 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:24,821 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:24,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:24,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:24,822 INFO L87 Difference]: Start difference. First operand 1350 states and 2241 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:29,018 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:29,018 INFO L93 Difference]: Finished difference Result 3202 states and 5478 transitions. [2022-07-19 16:50:29,019 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:50:29,019 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 97 [2022-07-19 16:50:29,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:29,033 INFO L225 Difference]: With dead ends: 3202 [2022-07-19 16:50:29,034 INFO L226 Difference]: Without dead ends: 1870 [2022-07-19 16:50:29,041 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:50:29,042 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 894 mSDsluCounter, 1392 mSDsCounter, 0 mSdLazyCounter, 2486 mSolverCounterSat, 256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 964 SdHoareTripleChecker+Valid, 2294 SdHoareTripleChecker+Invalid, 2742 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 256 IncrementalHoareTripleChecker+Valid, 2486 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:29,042 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [964 Valid, 2294 Invalid, 2742 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [256 Valid, 2486 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:50:29,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1870 states. [2022-07-19 16:50:29,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1870 to 1350. [2022-07-19 16:50:29,235 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1350 states, 1058 states have (on average 1.6408317580340264) internal successors, (1736), 1105 states have internal predecessors, (1736), 235 states have call successors, (235), 53 states have call predecessors, (235), 56 states have return successors, (269), 227 states have call predecessors, (269), 230 states have call successors, (269) [2022-07-19 16:50:29,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1350 states to 1350 states and 2240 transitions. [2022-07-19 16:50:29,243 INFO L78 Accepts]: Start accepts. Automaton has 1350 states and 2240 transitions. Word has length 97 [2022-07-19 16:50:29,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:29,243 INFO L495 AbstractCegarLoop]: Abstraction has 1350 states and 2240 transitions. [2022-07-19 16:50:29,243 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:29,244 INFO L276 IsEmpty]: Start isEmpty. Operand 1350 states and 2240 transitions. [2022-07-19 16:50:29,246 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 16:50:29,247 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:29,247 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] [2022-07-19 16:50:29,247 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 16:50:29,247 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:29,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:29,248 INFO L85 PathProgramCache]: Analyzing trace with hash -1191789461, now seen corresponding path program 1 times [2022-07-19 16:50:29,248 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:29,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296351977] [2022-07-19 16:50:29,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:29,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:29,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:29,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:29,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-19 16:50:29,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,567 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:29,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:29,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,608 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:29,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:29,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:29,660 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 16:50:29,661 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:29,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296351977] [2022-07-19 16:50:29,661 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296351977] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:29,661 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:29,661 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:50:29,661 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2004392756] [2022-07-19 16:50:29,662 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:29,662 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:50:29,662 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:29,663 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:50:29,663 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:50:29,663 INFO L87 Difference]: Start difference. First operand 1350 states and 2240 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:50:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:35,747 INFO L93 Difference]: Finished difference Result 3284 states and 5712 transitions. [2022-07-19 16:50:35,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-19 16:50:35,747 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 98 [2022-07-19 16:50:35,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:35,761 INFO L225 Difference]: With dead ends: 3284 [2022-07-19 16:50:35,761 INFO L226 Difference]: Without dead ends: 1992 [2022-07-19 16:50:35,767 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=103, Invalid=449, Unknown=0, NotChecked=0, Total=552 [2022-07-19 16:50:35,767 INFO L413 NwaCegarLoop]: 900 mSDtfsCounter, 1567 mSDsluCounter, 4040 mSDsCounter, 0 mSdLazyCounter, 6068 mSolverCounterSat, 539 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1630 SdHoareTripleChecker+Valid, 4940 SdHoareTripleChecker+Invalid, 6607 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 539 IncrementalHoareTripleChecker+Valid, 6068 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:35,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1630 Valid, 4940 Invalid, 6607 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [539 Valid, 6068 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-07-19 16:50:35,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1992 states. [2022-07-19 16:50:35,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1992 to 1370. [2022-07-19 16:50:35,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1068 states have (on average 1.6301498127340823) internal successors, (1741), 1122 states have internal predecessors, (1741), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:35,966 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2280 transitions. [2022-07-19 16:50:35,966 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2280 transitions. Word has length 98 [2022-07-19 16:50:35,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:35,967 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2280 transitions. [2022-07-19 16:50:35,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 8 states have internal predecessors, (77), 3 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:50:35,967 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2280 transitions. [2022-07-19 16:50:35,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-07-19 16:50:35,970 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:35,971 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] [2022-07-19 16:50:35,971 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 16:50:35,971 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:35,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:35,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1030401576, now seen corresponding path program 1 times [2022-07-19 16:50:35,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:35,972 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894064304] [2022-07-19 16:50:35,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:35,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:36,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,101 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:36,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:36,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-19 16:50:36,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:36,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:36,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:36,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:36,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:36,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:36,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:36,315 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:36,315 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:36,315 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894064304] [2022-07-19 16:50:36,316 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894064304] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:36,316 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:36,316 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:36,316 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [996415487] [2022-07-19 16:50:36,316 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:36,317 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:36,317 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:36,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:36,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:36,317 INFO L87 Difference]: Start difference. First operand 1370 states and 2280 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:40,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:40,443 INFO L93 Difference]: Finished difference Result 3208 states and 5525 transitions. [2022-07-19 16:50:40,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:40,445 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 99 [2022-07-19 16:50:40,445 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:40,456 INFO L225 Difference]: With dead ends: 3208 [2022-07-19 16:50:40,457 INFO L226 Difference]: Without dead ends: 1896 [2022-07-19 16:50:40,461 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:40,463 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 942 mSDsluCounter, 1386 mSDsCounter, 0 mSdLazyCounter, 2426 mSolverCounterSat, 311 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1012 SdHoareTripleChecker+Valid, 2232 SdHoareTripleChecker+Invalid, 2737 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 311 IncrementalHoareTripleChecker+Valid, 2426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:40,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1012 Valid, 2232 Invalid, 2737 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [311 Valid, 2426 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-19 16:50:40,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-19 16:50:40,648 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1370. [2022-07-19 16:50:40,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1068 states have (on average 1.6254681647940075) internal successors, (1736), 1122 states have internal predecessors, (1736), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:40,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2275 transitions. [2022-07-19 16:50:40,656 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2275 transitions. Word has length 99 [2022-07-19 16:50:40,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:40,657 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2275 transitions. [2022-07-19 16:50:40,657 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:40,657 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2275 transitions. [2022-07-19 16:50:40,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-07-19 16:50:40,660 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:40,660 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] [2022-07-19 16:50:40,661 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 16:50:40,661 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:40,661 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:40,661 INFO L85 PathProgramCache]: Analyzing trace with hash 434132679, now seen corresponding path program 1 times [2022-07-19 16:50:40,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:40,661 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [252234105] [2022-07-19 16:50:40,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:40,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:40,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:40,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:40,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:40,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,914 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-19 16:50:40,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:40,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:40,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,955 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:40,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:40,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:40,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:40,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:40,971 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:40,971 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:40,971 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [252234105] [2022-07-19 16:50:40,971 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [252234105] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:40,972 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:40,972 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:40,972 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [466980532] [2022-07-19 16:50:40,972 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:40,972 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:40,973 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:40,973 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:40,973 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:40,973 INFO L87 Difference]: Start difference. First operand 1370 states and 2275 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:45,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:45,259 INFO L93 Difference]: Finished difference Result 3208 states and 5520 transitions. [2022-07-19 16:50:45,259 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:45,260 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 100 [2022-07-19 16:50:45,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:45,272 INFO L225 Difference]: With dead ends: 3208 [2022-07-19 16:50:45,272 INFO L226 Difference]: Without dead ends: 1896 [2022-07-19 16:50:45,278 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:45,278 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 941 mSDsluCounter, 1403 mSDsCounter, 0 mSdLazyCounter, 2408 mSolverCounterSat, 298 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1011 SdHoareTripleChecker+Valid, 2257 SdHoareTripleChecker+Invalid, 2706 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 298 IncrementalHoareTripleChecker+Valid, 2408 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:45,279 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1011 Valid, 2257 Invalid, 2706 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [298 Valid, 2408 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-19 16:50:45,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-19 16:50:45,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1370. [2022-07-19 16:50:45,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1068 states have (on average 1.6207865168539326) internal successors, (1731), 1122 states have internal predecessors, (1731), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:45,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2270 transitions. [2022-07-19 16:50:45,494 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2270 transitions. Word has length 100 [2022-07-19 16:50:45,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:45,494 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2270 transitions. [2022-07-19 16:50:45,494 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 4 states have internal predecessors, (75), 2 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:45,495 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2270 transitions. [2022-07-19 16:50:45,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 16:50:45,497 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:45,497 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] [2022-07-19 16:50:45,498 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 16:50:45,498 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:45,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:45,498 INFO L85 PathProgramCache]: Analyzing trace with hash 808111443, now seen corresponding path program 1 times [2022-07-19 16:50:45,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:45,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31387878] [2022-07-19 16:50:45,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:45,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:45,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:45,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:45,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,619 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:45,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:50:45,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,790 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:45,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:45,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:45,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:45,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:45,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:45,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:45,822 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:45,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:45,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31387878] [2022-07-19 16:50:45,822 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31387878] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:45,822 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:45,822 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:45,823 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551000430] [2022-07-19 16:50:45,823 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:45,824 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:45,824 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:45,824 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:45,824 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:45,825 INFO L87 Difference]: Start difference. First operand 1370 states and 2270 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:49,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:49,826 INFO L93 Difference]: Finished difference Result 3208 states and 5515 transitions. [2022-07-19 16:50:49,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:49,827 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-07-19 16:50:49,827 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:49,838 INFO L225 Difference]: With dead ends: 3208 [2022-07-19 16:50:49,839 INFO L226 Difference]: Without dead ends: 1896 [2022-07-19 16:50:49,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:49,845 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1349 mSDsluCounter, 1325 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2170 SdHoareTripleChecker+Invalid, 2715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:49,845 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2170 Invalid, 2715 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:50:49,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-19 16:50:50,047 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1370. [2022-07-19 16:50:50,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1370 states, 1068 states have (on average 1.6161048689138577) internal successors, (1726), 1122 states have internal predecessors, (1726), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:50,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1370 states to 1370 states and 2265 transitions. [2022-07-19 16:50:50,056 INFO L78 Accepts]: Start accepts. Automaton has 1370 states and 2265 transitions. Word has length 101 [2022-07-19 16:50:50,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:50,057 INFO L495 AbstractCegarLoop]: Abstraction has 1370 states and 2265 transitions. [2022-07-19 16:50:50,057 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:50,057 INFO L276 IsEmpty]: Start isEmpty. Operand 1370 states and 2265 transitions. [2022-07-19 16:50:50,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-07-19 16:50:50,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:50,060 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] [2022-07-19 16:50:50,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 16:50:50,060 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:50,061 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:50,061 INFO L85 PathProgramCache]: Analyzing trace with hash -9204078, now seen corresponding path program 1 times [2022-07-19 16:50:50,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:50,061 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [237229788] [2022-07-19 16:50:50,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:50,062 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:50,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:50,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:50,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-19 16:50:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:50,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:50,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:50,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:50,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:50,412 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:50,412 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:50,413 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [237229788] [2022-07-19 16:50:50,413 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [237229788] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:50,413 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:50,413 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:50,413 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815397320] [2022-07-19 16:50:50,413 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:50,414 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:50,414 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:50,414 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:50,414 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:50,415 INFO L87 Difference]: Start difference. First operand 1370 states and 2265 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:54,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:54,308 INFO L93 Difference]: Finished difference Result 3223 states and 5530 transitions. [2022-07-19 16:50:54,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:50:54,309 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 101 [2022-07-19 16:50:54,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:54,320 INFO L225 Difference]: With dead ends: 3223 [2022-07-19 16:50:54,321 INFO L226 Difference]: Without dead ends: 1917 [2022-07-19 16:50:54,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:50:54,327 INFO L413 NwaCegarLoop]: 862 mSDtfsCounter, 1349 mSDsluCounter, 1318 mSDsCounter, 0 mSdLazyCounter, 2178 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1419 SdHoareTripleChecker+Valid, 2180 SdHoareTripleChecker+Invalid, 2585 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:54,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1419 Valid, 2180 Invalid, 2585 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2178 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-19 16:50:54,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-07-19 16:50:54,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1372. [2022-07-19 16:50:54,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1070 states have (on average 1.6149532710280374) internal successors, (1728), 1124 states have internal predecessors, (1728), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:54,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2267 transitions. [2022-07-19 16:50:54,550 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2267 transitions. Word has length 101 [2022-07-19 16:50:54,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:54,550 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 2267 transitions. [2022-07-19 16:50:54,551 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:54,551 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2267 transitions. [2022-07-19 16:50:54,553 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 16:50:54,554 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:54,554 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] [2022-07-19 16:50:54,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 16:50:54,554 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:54,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:54,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1734608354, now seen corresponding path program 1 times [2022-07-19 16:50:54,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:54,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381436568] [2022-07-19 16:50:54,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:54,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:54,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:54,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:54,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:54,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:54,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:54,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:54,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:54,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:54,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:54,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:54,855 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:54,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:54,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381436568] [2022-07-19 16:50:54,855 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381436568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:54,855 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:54,856 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:54,856 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1600875978] [2022-07-19 16:50:54,856 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:54,856 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:54,856 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:54,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:54,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:54,857 INFO L87 Difference]: Start difference. First operand 1372 states and 2267 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:58,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:50:58,281 INFO L93 Difference]: Finished difference Result 3214 states and 5516 transitions. [2022-07-19 16:50:58,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-19 16:50:58,281 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-07-19 16:50:58,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:50:58,290 INFO L225 Difference]: With dead ends: 3214 [2022-07-19 16:50:58,291 INFO L226 Difference]: Without dead ends: 1900 [2022-07-19 16:50:58,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2022-07-19 16:50:58,296 INFO L413 NwaCegarLoop]: 845 mSDtfsCounter, 1351 mSDsluCounter, 1313 mSDsCounter, 0 mSdLazyCounter, 2164 mSolverCounterSat, 419 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1421 SdHoareTripleChecker+Valid, 2158 SdHoareTripleChecker+Invalid, 2583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 419 IncrementalHoareTripleChecker+Valid, 2164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:50:58,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1421 Valid, 2158 Invalid, 2583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [419 Valid, 2164 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:50:58,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1900 states. [2022-07-19 16:50:58,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1900 to 1372. [2022-07-19 16:50:58,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1372 states, 1070 states have (on average 1.6102803738317757) internal successors, (1723), 1124 states have internal predecessors, (1723), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:50:58,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1372 states to 1372 states and 2262 transitions. [2022-07-19 16:50:58,504 INFO L78 Accepts]: Start accepts. Automaton has 1372 states and 2262 transitions. Word has length 102 [2022-07-19 16:50:58,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:50:58,504 INFO L495 AbstractCegarLoop]: Abstraction has 1372 states and 2262 transitions. [2022-07-19 16:50:58,504 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:50:58,504 INFO L276 IsEmpty]: Start isEmpty. Operand 1372 states and 2262 transitions. [2022-07-19 16:50:58,507 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-07-19 16:50:58,507 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:50:58,507 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] [2022-07-19 16:50:58,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 16:50:58,508 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:50:58,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:50:58,508 INFO L85 PathProgramCache]: Analyzing trace with hash -1520438971, now seen corresponding path program 1 times [2022-07-19 16:50:58,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:50:58,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166246757] [2022-07-19 16:50:58,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:50:58,509 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:50:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,609 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:50:58,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:58,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:50:58,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,772 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:58,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:50:58,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:50:58,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:50:58,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:50:58,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:50:58,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:50:58,814 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:50:58,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:50:58,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166246757] [2022-07-19 16:50:58,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [166246757] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:50:58,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:50:58,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:50:58,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1860792768] [2022-07-19 16:50:58,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:50:58,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:50:58,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:50:58,817 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:50:58,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:50:58,817 INFO L87 Difference]: Start difference. First operand 1372 states and 2262 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:51:02,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:02,494 INFO L93 Difference]: Finished difference Result 3227 states and 5527 transitions. [2022-07-19 16:51:02,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-19 16:51:02,494 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 102 [2022-07-19 16:51:02,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:02,504 INFO L225 Difference]: With dead ends: 3227 [2022-07-19 16:51:02,504 INFO L226 Difference]: Without dead ends: 1921 [2022-07-19 16:51:02,509 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-19 16:51:02,510 INFO L413 NwaCegarLoop]: 858 mSDtfsCounter, 1744 mSDsluCounter, 1267 mSDsCounter, 0 mSdLazyCounter, 2097 mSolverCounterSat, 541 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 2125 SdHoareTripleChecker+Invalid, 2638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 541 IncrementalHoareTripleChecker+Valid, 2097 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:02,510 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 2125 Invalid, 2638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [541 Valid, 2097 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:02,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1921 states. [2022-07-19 16:51:02,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1921 to 1375. [2022-07-19 16:51:02,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1073 states have (on average 1.608574091332712) internal successors, (1726), 1127 states have internal predecessors, (1726), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:51:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2265 transitions. [2022-07-19 16:51:02,759 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2265 transitions. Word has length 102 [2022-07-19 16:51:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:02,759 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 2265 transitions. [2022-07-19 16:51:02,759 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, (11), 5 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:51:02,759 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2265 transitions. [2022-07-19 16:51:02,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 16:51:02,763 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:02,763 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] [2022-07-19 16:51:02,763 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-19 16:51:02,763 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:02,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:02,764 INFO L85 PathProgramCache]: Analyzing trace with hash -1685668658, now seen corresponding path program 1 times [2022-07-19 16:51:02,764 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:02,764 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [327334679] [2022-07-19 16:51:02,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:02,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:02,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:02,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:02,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:02,881 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:02,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:02,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:02,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:03,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:03,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:03,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,079 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:03,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:03,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:03,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:03,092 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:03,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:03,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [327334679] [2022-07-19 16:51:03,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [327334679] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:03,093 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:03,093 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-19 16:51:03,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [953190939] [2022-07-19 16:51:03,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:03,094 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-19 16:51:03,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:03,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-19 16:51:03,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-19 16:51:03,095 INFO L87 Difference]: Start difference. First operand 1375 states and 2265 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:51:06,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:06,702 INFO L93 Difference]: Finished difference Result 3263 states and 5570 transitions. [2022-07-19 16:51:06,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-19 16:51:06,703 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 103 [2022-07-19 16:51:06,703 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:06,716 INFO L225 Difference]: With dead ends: 3263 [2022-07-19 16:51:06,716 INFO L226 Difference]: Without dead ends: 1906 [2022-07-19 16:51:06,723 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:06,723 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1265 mSDsluCounter, 1323 mSDsCounter, 0 mSdLazyCounter, 2177 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1335 SdHoareTripleChecker+Valid, 2192 SdHoareTripleChecker+Invalid, 2569 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:06,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1335 Valid, 2192 Invalid, 2569 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2177 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-19 16:51:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1906 states. [2022-07-19 16:51:06,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1906 to 1375. [2022-07-19 16:51:06,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1375 states, 1073 states have (on average 1.6076421248835042) internal successors, (1725), 1127 states have internal predecessors, (1725), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:51:06,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1375 states to 1375 states and 2264 transitions. [2022-07-19 16:51:06,944 INFO L78 Accepts]: Start accepts. Automaton has 1375 states and 2264 transitions. Word has length 103 [2022-07-19 16:51:06,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:06,944 INFO L495 AbstractCegarLoop]: Abstraction has 1375 states and 2264 transitions. [2022-07-19 16:51:06,944 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-19 16:51:06,945 INFO L276 IsEmpty]: Start isEmpty. Operand 1375 states and 2264 transitions. [2022-07-19 16:51:06,947 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 16:51:06,947 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:06,947 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] [2022-07-19 16:51:06,947 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-19 16:51:06,948 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:06,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:06,948 INFO L85 PathProgramCache]: Analyzing trace with hash 1441102383, now seen corresponding path program 1 times [2022-07-19 16:51:06,948 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:06,948 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105693101] [2022-07-19 16:51:06,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:06,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:06,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:07,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:07,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:07,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:07,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,268 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:07,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,270 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:07,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,271 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:07,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:07,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:07,288 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:07,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:07,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105693101] [2022-07-19 16:51:07,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105693101] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:07,288 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:07,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:51:07,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105771176] [2022-07-19 16:51:07,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:07,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:51:07,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:07,290 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:51:07,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:51:07,290 INFO L87 Difference]: Start difference. First operand 1375 states and 2264 transitions. Second operand has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:12,404 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:12,405 INFO L93 Difference]: Finished difference Result 3223 states and 5520 transitions. [2022-07-19 16:51:12,405 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:51:12,405 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-07-19 16:51:12,406 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:12,427 INFO L225 Difference]: With dead ends: 3223 [2022-07-19 16:51:12,427 INFO L226 Difference]: Without dead ends: 1896 [2022-07-19 16:51:12,432 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=87, Invalid=375, Unknown=0, NotChecked=0, Total=462 [2022-07-19 16:51:12,433 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1767 mSDsluCounter, 3599 mSDsCounter, 0 mSdLazyCounter, 5748 mSolverCounterSat, 536 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1837 SdHoareTripleChecker+Valid, 4480 SdHoareTripleChecker+Invalid, 6284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 536 IncrementalHoareTripleChecker+Valid, 5748 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:12,434 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1837 Valid, 4480 Invalid, 6284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [536 Valid, 5748 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-19 16:51:12,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1896 states. [2022-07-19 16:51:12,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1896 to 1367. [2022-07-19 16:51:12,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1367 states, 1065 states have (on average 1.6093896713615023) internal successors, (1714), 1119 states have internal predecessors, (1714), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:51:12,720 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1367 states to 1367 states and 2253 transitions. [2022-07-19 16:51:12,720 INFO L78 Accepts]: Start accepts. Automaton has 1367 states and 2253 transitions. Word has length 103 [2022-07-19 16:51:12,720 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:12,720 INFO L495 AbstractCegarLoop]: Abstraction has 1367 states and 2253 transitions. [2022-07-19 16:51:12,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.090909090909091) internal successors, (78), 8 states have internal predecessors, (78), 3 states have call successors, (11), 5 states have call predecessors, (11), 4 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:12,721 INFO L276 IsEmpty]: Start isEmpty. Operand 1367 states and 2253 transitions. [2022-07-19 16:51:12,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-07-19 16:51:12,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:12,724 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] [2022-07-19 16:51:12,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-19 16:51:12,724 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:12,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:12,724 INFO L85 PathProgramCache]: Analyzing trace with hash 47458990, now seen corresponding path program 1 times [2022-07-19 16:51:12,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:12,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [136195639] [2022-07-19 16:51:12,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:12,725 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:12,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:12,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:12,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,837 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:12,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:12,986 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-19 16:51:12,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:13,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:13,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:13,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:13,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:13,032 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:13,032 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:13,032 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [136195639] [2022-07-19 16:51:13,032 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [136195639] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:13,032 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:13,032 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:51:13,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074145210] [2022-07-19 16:51:13,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:13,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:51:13,033 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:13,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:51:13,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:13,034 INFO L87 Difference]: Start difference. First operand 1367 states and 2253 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:17,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:17,728 INFO L93 Difference]: Finished difference Result 3223 states and 5516 transitions. [2022-07-19 16:51:17,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:51:17,729 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 103 [2022-07-19 16:51:17,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:17,738 INFO L225 Difference]: With dead ends: 3223 [2022-07-19 16:51:17,738 INFO L226 Difference]: Without dead ends: 1917 [2022-07-19 16:51:17,742 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:51:17,743 INFO L413 NwaCegarLoop]: 851 mSDtfsCounter, 1701 mSDsluCounter, 2689 mSDsCounter, 0 mSdLazyCounter, 4205 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1771 SdHoareTripleChecker+Valid, 3540 SdHoareTripleChecker+Invalid, 4747 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 4205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:17,743 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1771 Valid, 3540 Invalid, 4747 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 4205 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-19 16:51:17,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1917 states. [2022-07-19 16:51:17,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1917 to 1371. [2022-07-19 16:51:17,988 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1371 states, 1069 states have (on average 1.60710944808232) internal successors, (1718), 1123 states have internal predecessors, (1718), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:51:17,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1371 states to 1371 states and 2257 transitions. [2022-07-19 16:51:17,992 INFO L78 Accepts]: Start accepts. Automaton has 1371 states and 2257 transitions. Word has length 103 [2022-07-19 16:51:17,992 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:17,993 INFO L495 AbstractCegarLoop]: Abstraction has 1371 states and 2257 transitions. [2022-07-19 16:51:17,993 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, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:17,993 INFO L276 IsEmpty]: Start isEmpty. Operand 1371 states and 2257 transitions. [2022-07-19 16:51:17,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-19 16:51:17,995 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:17,995 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] [2022-07-19 16:51:17,996 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-19 16:51:17,996 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:17,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:17,996 INFO L85 PathProgramCache]: Analyzing trace with hash 620620127, now seen corresponding path program 1 times [2022-07-19 16:51:17,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:17,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41378463] [2022-07-19 16:51:17,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:17,997 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:18,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:18,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,104 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:18,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:18,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-19 16:51:18,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:18,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:18,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:18,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:18,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:18,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:18,314 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:18,314 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:18,314 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41378463] [2022-07-19 16:51:18,314 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41378463] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:18,315 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:18,315 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:51:18,315 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [190003710] [2022-07-19 16:51:18,315 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:18,315 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:51:18,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:18,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:51:18,316 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:51:18,316 INFO L87 Difference]: Start difference. First operand 1371 states and 2257 transitions. Second operand has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:23,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:23,663 INFO L93 Difference]: Finished difference Result 3231 states and 5522 transitions. [2022-07-19 16:51:23,664 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-19 16:51:23,664 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) Word has length 104 [2022-07-19 16:51:23,664 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:23,674 INFO L225 Difference]: With dead ends: 3231 [2022-07-19 16:51:23,674 INFO L226 Difference]: Without dead ends: 1925 [2022-07-19 16:51:23,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 65 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=94, Invalid=326, Unknown=0, NotChecked=0, Total=420 [2022-07-19 16:51:23,678 INFO L413 NwaCegarLoop]: 847 mSDtfsCounter, 922 mSDsluCounter, 2789 mSDsCounter, 0 mSdLazyCounter, 4424 mSolverCounterSat, 273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 992 SdHoareTripleChecker+Valid, 3636 SdHoareTripleChecker+Invalid, 4697 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 273 IncrementalHoareTripleChecker+Valid, 4424 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:23,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [992 Valid, 3636 Invalid, 4697 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [273 Valid, 4424 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-19 16:51:23,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1925 states. [2022-07-19 16:51:23,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1925 to 1376. [2022-07-19 16:51:23,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1376 states, 1074 states have (on average 1.6042830540037243) internal successors, (1723), 1128 states have internal predecessors, (1723), 238 states have call successors, (238), 53 states have call predecessors, (238), 63 states have return successors, (301), 230 states have call predecessors, (301), 233 states have call successors, (301) [2022-07-19 16:51:23,928 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1376 states to 1376 states and 2262 transitions. [2022-07-19 16:51:23,929 INFO L78 Accepts]: Start accepts. Automaton has 1376 states and 2262 transitions. Word has length 104 [2022-07-19 16:51:23,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:23,929 INFO L495 AbstractCegarLoop]: Abstraction has 1376 states and 2262 transitions. [2022-07-19 16:51:23,929 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 8.777777777777779) internal successors, (79), 6 states have internal predecessors, (79), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (10), 3 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-19 16:51:23,929 INFO L276 IsEmpty]: Start isEmpty. Operand 1376 states and 2262 transitions. [2022-07-19 16:51:23,931 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-07-19 16:51:23,931 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:23,932 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] [2022-07-19 16:51:23,932 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-19 16:51:23,932 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:23,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:23,932 INFO L85 PathProgramCache]: Analyzing trace with hash 924559641, now seen corresponding path program 1 times [2022-07-19 16:51:23,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:23,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259401711] [2022-07-19 16:51:23,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:23,933 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:23,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:24,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:24,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:24,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,169 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:24,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:24,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:24,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:24,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:24,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:24,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:24,390 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:24,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:24,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259401711] [2022-07-19 16:51:24,391 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259401711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:24,391 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:51:24,391 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2022-07-19 16:51:24,391 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [608136325] [2022-07-19 16:51:24,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:24,392 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-07-19 16:51:24,392 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:24,392 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-07-19 16:51:24,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2022-07-19 16:51:24,393 INFO L87 Difference]: Start difference. First operand 1376 states and 2262 transitions. Second operand has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-19 16:51:58,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:51:58,146 INFO L93 Difference]: Finished difference Result 6525 states and 11689 transitions. [2022-07-19 16:51:58,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 85 states. [2022-07-19 16:51:58,146 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) Word has length 105 [2022-07-19 16:51:58,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:51:58,170 INFO L225 Difference]: With dead ends: 6525 [2022-07-19 16:51:58,170 INFO L226 Difference]: Without dead ends: 5223 [2022-07-19 16:51:58,178 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3161 ImplicationChecksByTransitivity, 6.5s TimeCoverageRelationStatistics Valid=1333, Invalid=7409, Unknown=0, NotChecked=0, Total=8742 [2022-07-19 16:51:58,179 INFO L413 NwaCegarLoop]: 1515 mSDtfsCounter, 8498 mSDsluCounter, 7384 mSDsCounter, 0 mSdLazyCounter, 23519 mSolverCounterSat, 4783 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8571 SdHoareTripleChecker+Valid, 8899 SdHoareTripleChecker+Invalid, 28302 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4783 IncrementalHoareTripleChecker+Valid, 23519 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:51:58,179 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8571 Valid, 8899 Invalid, 28302 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4783 Valid, 23519 Invalid, 0 Unknown, 0 Unchecked, 25.9s Time] [2022-07-19 16:51:58,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5223 states. [2022-07-19 16:51:58,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5223 to 3026. [2022-07-19 16:51:58,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3026 states, 2362 states have (on average 1.5787468247248095) internal successors, (3729), 2480 states have internal predecessors, (3729), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-07-19 16:51:58,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3026 states to 3026 states and 4928 transitions. [2022-07-19 16:51:58,907 INFO L78 Accepts]: Start accepts. Automaton has 3026 states and 4928 transitions. Word has length 105 [2022-07-19 16:51:58,907 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:51:58,907 INFO L495 AbstractCegarLoop]: Abstraction has 3026 states and 4928 transitions. [2022-07-19 16:51:58,908 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 5.333333333333333) internal successors, (80), 12 states have internal predecessors, (80), 5 states have call successors, (11), 5 states have call predecessors, (11), 6 states have return successors, (10), 7 states have call predecessors, (10), 4 states have call successors, (10) [2022-07-19 16:51:58,908 INFO L276 IsEmpty]: Start isEmpty. Operand 3026 states and 4928 transitions. [2022-07-19 16:51:58,910 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-07-19 16:51:58,910 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:51:58,910 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] [2022-07-19 16:51:58,910 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-19 16:51:58,911 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:51:58,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:51:58,911 INFO L85 PathProgramCache]: Analyzing trace with hash -688289718, now seen corresponding path program 1 times [2022-07-19 16:51:58,911 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:51:58,911 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [537137980] [2022-07-19 16:51:58,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:58,912 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:51:58,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:51:59,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,049 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:51:59,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:51:59,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:51:59,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:51:59,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:51:59,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:51:59,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:51:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,292 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-19 16:51:59,293 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:51:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [537137980] [2022-07-19 16:51:59,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [537137980] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:51:59,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1736163591] [2022-07-19 16:51:59,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:51:59,294 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:51:59,294 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:51:59,296 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:51:59,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 16:51:59,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:51:59,551 INFO L263 TraceCheckSpWp]: Trace formula consists of 1416 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-19 16:51:59,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:51:59,775 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:51:59,775 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 16:51:59,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1736163591] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:51:59,775 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 16:51:59,776 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [10] total 13 [2022-07-19 16:51:59,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [467248127] [2022-07-19 16:51:59,776 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:51:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-19 16:51:59,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:51:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-19 16:51:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:51:59,777 INFO L87 Difference]: Start difference. First operand 3026 states and 4928 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 16:52:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:00,704 INFO L93 Difference]: Finished difference Result 3142 states and 5115 transitions. [2022-07-19 16:52:00,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-19 16:52:00,705 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) Word has length 106 [2022-07-19 16:52:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:00,719 INFO L225 Difference]: With dead ends: 3142 [2022-07-19 16:52:00,720 INFO L226 Difference]: Without dead ends: 3127 [2022-07-19 16:52:00,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 119 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:52:00,723 INFO L413 NwaCegarLoop]: 805 mSDtfsCounter, 753 mSDsluCounter, 1268 mSDsCounter, 0 mSdLazyCounter, 357 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 761 SdHoareTripleChecker+Valid, 2073 SdHoareTripleChecker+Invalid, 365 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:00,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [761 Valid, 2073 Invalid, 365 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 357 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-19 16:52:00,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3127 states. [2022-07-19 16:52:01,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3127 to 3035. [2022-07-19 16:52:01,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2371 states have (on average 1.5765499789118516) internal successors, (3738), 2489 states have internal predecessors, (3738), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-07-19 16:52:01,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4937 transitions. [2022-07-19 16:52:01,246 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4937 transitions. Word has length 106 [2022-07-19 16:52:01,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:01,247 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 4937 transitions. [2022-07-19 16:52:01,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 1 states have call successors, (10) [2022-07-19 16:52:01,247 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4937 transitions. [2022-07-19 16:52:01,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-07-19 16:52:01,249 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:01,249 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] [2022-07-19 16:52:01,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-19 16:52:01,475 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,SelfDestructingSolverStorable17 [2022-07-19 16:52:01,476 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:01,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:01,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1200184603, now seen corresponding path program 1 times [2022-07-19 16:52:01,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:01,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155604924] [2022-07-19 16:52:01,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:01,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:01,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,592 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:01,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,763 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,792 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:01,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:52:01,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,805 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:52:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:52:01,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:52:01,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:01,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:01,827 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-19 16:52:01,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:01,828 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155604924] [2022-07-19 16:52:01,828 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155604924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:01,828 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:01,828 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:01,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121883321] [2022-07-19 16:52:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:01,829 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:01,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:01,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:01,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:01,830 INFO L87 Difference]: Start difference. First operand 3035 states and 4937 transitions. Second operand has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 16:52:09,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:09,745 INFO L93 Difference]: Finished difference Result 4143 states and 7135 transitions. [2022-07-19 16:52:09,745 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2022-07-19 16:52:09,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) Word has length 112 [2022-07-19 16:52:09,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:09,764 INFO L225 Difference]: With dead ends: 4143 [2022-07-19 16:52:09,764 INFO L226 Difference]: Without dead ends: 4128 [2022-07-19 16:52:09,768 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 211 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=206, Invalid=724, Unknown=0, NotChecked=0, Total=930 [2022-07-19 16:52:09,769 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 3855 mSDsluCounter, 2016 mSDsCounter, 0 mSdLazyCounter, 4482 mSolverCounterSat, 1393 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3920 SdHoareTripleChecker+Valid, 2913 SdHoareTripleChecker+Invalid, 5875 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1393 IncrementalHoareTripleChecker+Valid, 4482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.7s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:09,769 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3920 Valid, 2913 Invalid, 5875 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1393 Valid, 4482 Invalid, 0 Unknown, 0 Unchecked, 5.7s Time] [2022-07-19 16:52:09,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4128 states. [2022-07-19 16:52:10,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4128 to 3035. [2022-07-19 16:52:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3035 states, 2371 states have (on average 1.5735976381273724) internal successors, (3731), 2489 states have internal predecessors, (3731), 512 states have call successors, (512), 118 states have call predecessors, (512), 151 states have return successors, (687), 499 states have call predecessors, (687), 507 states have call successors, (687) [2022-07-19 16:52:10,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3035 states to 3035 states and 4930 transitions. [2022-07-19 16:52:10,389 INFO L78 Accepts]: Start accepts. Automaton has 3035 states and 4930 transitions. Word has length 112 [2022-07-19 16:52:10,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:10,390 INFO L495 AbstractCegarLoop]: Abstraction has 3035 states and 4930 transitions. [2022-07-19 16:52:10,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 9.444444444444445) internal successors, (85), 5 states have internal predecessors, (85), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-19 16:52:10,390 INFO L276 IsEmpty]: Start isEmpty. Operand 3035 states and 4930 transitions. [2022-07-19 16:52:10,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-07-19 16:52:10,393 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:10,393 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:10,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-19 16:52:10,394 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 1335975161, now seen corresponding path program 1 times [2022-07-19 16:52:10,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:10,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [271563857] [2022-07-19 16:52:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:10,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:10,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:10,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:10,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:52:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:52:10,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:52:10,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:52:10,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:10,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:52:10,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:10,753 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:52:10,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:10,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [271563857] [2022-07-19 16:52:10,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [271563857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:10,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:10,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-07-19 16:52:10,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204150496] [2022-07-19 16:52:10,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:10,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-19 16:52:10,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:10,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-19 16:52:10,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-19 16:52:10,756 INFO L87 Difference]: Start difference. First operand 3035 states and 4930 transitions. Second operand has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:52:24,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:24,391 INFO L93 Difference]: Finished difference Result 7903 states and 13608 transitions. [2022-07-19 16:52:24,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2022-07-19 16:52:24,392 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) Word has length 123 [2022-07-19 16:52:24,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:24,412 INFO L225 Difference]: With dead ends: 7903 [2022-07-19 16:52:24,413 INFO L226 Difference]: Without dead ends: 4954 [2022-07-19 16:52:24,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 523 ImplicationChecksByTransitivity, 2.5s TimeCoverageRelationStatistics Valid=370, Invalid=1610, Unknown=0, NotChecked=0, Total=1980 [2022-07-19 16:52:24,425 INFO L413 NwaCegarLoop]: 802 mSDtfsCounter, 5907 mSDsluCounter, 2225 mSDsCounter, 0 mSdLazyCounter, 8577 mSolverCounterSat, 2909 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 9.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5908 SdHoareTripleChecker+Valid, 3027 SdHoareTripleChecker+Invalid, 11486 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2909 IncrementalHoareTripleChecker+Valid, 8577 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.9s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:24,425 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5908 Valid, 3027 Invalid, 11486 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2909 Valid, 8577 Invalid, 0 Unknown, 0 Unchecked, 9.9s Time] [2022-07-19 16:52:24,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4954 states. [2022-07-19 16:52:25,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4954 to 3051. [2022-07-19 16:52:25,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3051 states, 2383 states have (on average 1.5669324381032312) internal successors, (3734), 2501 states have internal predecessors, (3734), 512 states have call successors, (512), 118 states have call predecessors, (512), 155 states have return successors, (728), 503 states have call predecessors, (728), 507 states have call successors, (728) [2022-07-19 16:52:25,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3051 states to 3051 states and 4974 transitions. [2022-07-19 16:52:25,126 INFO L78 Accepts]: Start accepts. Automaton has 3051 states and 4974 transitions. Word has length 123 [2022-07-19 16:52:25,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:52:25,127 INFO L495 AbstractCegarLoop]: Abstraction has 3051 states and 4974 transitions. [2022-07-19 16:52:25,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 7.583333333333333) internal successors, (91), 7 states have internal predecessors, (91), 4 states have call successors, (13), 5 states have call predecessors, (13), 4 states have return successors, (12), 6 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:52:25,127 INFO L276 IsEmpty]: Start isEmpty. Operand 3051 states and 4974 transitions. [2022-07-19 16:52:25,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-07-19 16:52:25,130 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:52:25,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:52:25,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-19 16:52:25,130 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:52:25,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:52:25,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1432026268, now seen corresponding path program 1 times [2022-07-19 16:52:25,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:52:25,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021234811] [2022-07-19 16:52:25,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:52:25,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:52:25,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,246 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:52:25,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:52:25,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:52:25,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:52:25,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:52:25,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:52:25,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,461 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:52:25,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:52:25,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:52:25,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:52:25,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:52:25,479 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-19 16:52:25,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:52:25,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021234811] [2022-07-19 16:52:25,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021234811] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:52:25,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:52:25,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-19 16:52:25,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159439168] [2022-07-19 16:52:25,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:52:25,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-19 16:52:25,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:52:25,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-19 16:52:25,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-19 16:52:25,485 INFO L87 Difference]: Start difference. First operand 3051 states and 4974 transitions. Second operand has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:52:57,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:52:57,758 INFO L93 Difference]: Finished difference Result 15382 states and 28143 transitions. [2022-07-19 16:52:57,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 47 states. [2022-07-19 16:52:57,759 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 124 [2022-07-19 16:52:57,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:52:57,843 INFO L225 Difference]: With dead ends: 15382 [2022-07-19 16:52:57,843 INFO L226 Difference]: Without dead ends: 12417 [2022-07-19 16:52:57,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 802 ImplicationChecksByTransitivity, 3.2s TimeCoverageRelationStatistics Valid=539, Invalid=1813, Unknown=0, NotChecked=0, Total=2352 [2022-07-19 16:52:57,869 INFO L413 NwaCegarLoop]: 1039 mSDtfsCounter, 7821 mSDsluCounter, 2431 mSDsCounter, 0 mSdLazyCounter, 10707 mSolverCounterSat, 4973 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7886 SdHoareTripleChecker+Valid, 3470 SdHoareTripleChecker+Invalid, 15680 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4973 IncrementalHoareTripleChecker+Valid, 10707 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 25.0s IncrementalHoareTripleChecker+Time [2022-07-19 16:52:57,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7886 Valid, 3470 Invalid, 15680 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4973 Valid, 10707 Invalid, 0 Unknown, 0 Unchecked, 25.0s Time] [2022-07-19 16:52:57,880 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12417 states. [2022-07-19 16:53:00,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12417 to 8022. [2022-07-19 16:53:00,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8022 states, 5961 states have (on average 1.5502432477772186) internal successors, (9241), 6380 states have internal predecessors, (9241), 1723 states have call successors, (1723), 230 states have call predecessors, (1723), 337 states have return successors, (2666), 1699 states have call predecessors, (2666), 1718 states have call successors, (2666) [2022-07-19 16:53:00,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8022 states to 8022 states and 13630 transitions. [2022-07-19 16:53:00,162 INFO L78 Accepts]: Start accepts. Automaton has 8022 states and 13630 transitions. Word has length 124 [2022-07-19 16:53:00,163 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:00,163 INFO L495 AbstractCegarLoop]: Abstraction has 8022 states and 13630 transitions. [2022-07-19 16:53:00,163 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 10.222222222222221) internal successors, (92), 6 states have internal predecessors, (92), 4 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-19 16:53:00,163 INFO L276 IsEmpty]: Start isEmpty. Operand 8022 states and 13630 transitions. [2022-07-19 16:53:00,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-19 16:53:00,167 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:00,167 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 16:53:00,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-19 16:53:00,167 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:00,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:00,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1811653656, now seen corresponding path program 1 times [2022-07-19 16:53:00,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:00,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1412843773] [2022-07-19 16:53:00,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:00,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:00,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,291 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:00,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:00,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:00,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:00,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:53:00,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,530 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-19 16:53:00,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-19 16:53:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-19 16:53:00,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-19 16:53:00,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-19 16:53:00,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-19 16:53:00,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,553 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 16:53:00,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:00,554 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1412843773] [2022-07-19 16:53:00,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1412843773] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 16:53:00,555 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [788125270] [2022-07-19 16:53:00,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:00,555 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 16:53:00,555 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 16:53:00,556 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 16:53:00,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-19 16:53:00,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:00,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1493 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-19 16:53:00,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 16:53:00,918 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 16:53:00,918 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-19 16:53:01,235 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 16:53:01,236 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [788125270] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-19 16:53:01,236 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-19 16:53:01,236 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 7, 7] total 13 [2022-07-19 16:53:01,236 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1031817356] [2022-07-19 16:53:01,236 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-19 16:53:01,237 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-07-19 16:53:01,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:01,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-07-19 16:53:01,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2022-07-19 16:53:01,238 INFO L87 Difference]: Start difference. First operand 8022 states and 13630 transitions. Second operand has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 16:53:15,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 16:53:15,128 INFO L93 Difference]: Finished difference Result 20865 states and 37693 transitions. [2022-07-19 16:53:15,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-07-19 16:53:15,129 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) Word has length 132 [2022-07-19 16:53:15,129 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 16:53:15,211 INFO L225 Difference]: With dead ends: 20865 [2022-07-19 16:53:15,212 INFO L226 Difference]: Without dead ends: 12925 [2022-07-19 16:53:15,246 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 328 GetRequests, 296 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=279, Invalid=843, Unknown=0, NotChecked=0, Total=1122 [2022-07-19 16:53:15,246 INFO L413 NwaCegarLoop]: 1095 mSDtfsCounter, 4896 mSDsluCounter, 1836 mSDsCounter, 0 mSdLazyCounter, 4734 mSolverCounterSat, 1713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4955 SdHoareTripleChecker+Valid, 2931 SdHoareTripleChecker+Invalid, 6447 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1713 IncrementalHoareTripleChecker+Valid, 4734 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-19 16:53:15,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4955 Valid, 2931 Invalid, 6447 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1713 Valid, 4734 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-19 16:53:15,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12925 states. [2022-07-19 16:53:17,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12925 to 8984. [2022-07-19 16:53:17,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8984 states, 6711 states have (on average 1.5401579496349278) internal successors, (10336), 7163 states have internal predecessors, (10336), 1875 states have call successors, (1875), 270 states have call predecessors, (1875), 397 states have return successors, (2933), 1841 states have call predecessors, (2933), 1870 states have call successors, (2933) [2022-07-19 16:53:17,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8984 states to 8984 states and 15144 transitions. [2022-07-19 16:53:17,737 INFO L78 Accepts]: Start accepts. Automaton has 8984 states and 15144 transitions. Word has length 132 [2022-07-19 16:53:17,738 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 16:53:17,738 INFO L495 AbstractCegarLoop]: Abstraction has 8984 states and 15144 transitions. [2022-07-19 16:53:17,738 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 11.076923076923077) internal successors, (144), 10 states have internal predecessors, (144), 6 states have call successors, (26), 8 states have call predecessors, (26), 5 states have return successors, (19), 6 states have call predecessors, (19), 5 states have call successors, (19) [2022-07-19 16:53:17,738 INFO L276 IsEmpty]: Start isEmpty. Operand 8984 states and 15144 transitions. [2022-07-19 16:53:17,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2022-07-19 16:53:17,743 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 16:53:17,743 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 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] [2022-07-19 16:53:17,764 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-19 16:53:17,952 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,SelfDestructingSolverStorable21 [2022-07-19 16:53:17,953 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 16:53:17,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 16:53:17,953 INFO L85 PathProgramCache]: Analyzing trace with hash -1594702217, now seen corresponding path program 1 times [2022-07-19 16:53:17,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 16:53:17,954 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [189111790] [2022-07-19 16:53:17,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 16:53:17,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 16:53:17,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-19 16:53:18,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:18,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:18,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:18,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:18,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-19 16:53:18,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,265 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-19 16:53:18,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-19 16:53:18,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-19 16:53:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-19 16:53:18,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-19 16:53:18,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-19 16:53:18,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-19 16:53:18,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 16:53:18,316 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-19 16:53:18,316 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 16:53:18,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [189111790] [2022-07-19 16:53:18,317 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [189111790] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 16:53:18,317 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 16:53:18,317 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-19 16:53:18,317 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475721401] [2022-07-19 16:53:18,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 16:53:18,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-19 16:53:18,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 16:53:18,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-19 16:53:18,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-19 16:53:18,319 INFO L87 Difference]: Start difference. First operand 8984 states and 15144 transitions. Second operand has 10 states, 10 states have (on average 9.9) internal successors, (99), 7 states have internal predecessors, (99), 4 states have call successors, (14), 5 states have call predecessors, (14), 4 states have return successors, (13), 4 states have call predecessors, (13), 4 states have call successors, (13)