./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 6c24879c Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product26.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 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 05:51:32,955 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 05:51:32,957 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 05:51:32,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 05:51:32,979 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 05:51:32,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 05:51:32,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 05:51:32,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 05:51:32,986 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 05:51:32,990 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 05:51:32,991 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 05:51:32,993 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 05:51:32,993 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 05:51:32,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 05:51:32,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 05:51:32,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 05:51:32,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 05:51:32,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 05:51:33,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 05:51:33,006 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 05:51:33,008 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 05:51:33,008 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 05:51:33,009 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 05:51:33,009 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 05:51:33,011 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 05:51:33,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 05:51:33,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 05:51:33,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 05:51:33,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 05:51:33,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 05:51:33,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 05:51:33,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 05:51:33,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 05:51:33,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 05:51:33,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 05:51:33,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 05:51:33,018 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 05:51:33,018 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 05:51:33,018 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 05:51:33,019 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 05:51:33,019 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 05:51:33,020 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 05:51:33,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-12 05:51:33,043 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 05:51:33,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 05:51:33,043 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 05:51:33,043 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 05:51:33,044 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 05:51:33,044 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 05:51:33,044 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 05:51:33,044 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 05:51:33,044 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 05:51:33,045 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-12 05:51:33,045 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 05:51:33,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-12 05:51:33,046 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 05:51:33,046 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-12 05:51:33,046 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 05:51:33,046 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-12 05:51:33,046 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 05:51:33,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 05:51:33,047 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 05:51:33,047 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:51:33,047 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 05:51:33,047 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 05:51:33,048 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-12 05:51:33,048 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 05:51:33,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 05:51:33,048 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-12 05:51:33,048 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-12 05:51:33,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-12 05:51:33,049 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 64b60b46be25872d2112a950c23ddbe99bccee21bea4e463fd90753650d2a7bd [2022-07-12 05:51:33,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 05:51:33,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 05:51:33,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 05:51:33,262 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 05:51:33,263 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 05:51:33,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2022-07-12 05:51:33,301 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12fb2c5d6/305aea7da67345218f7c1cc34fc342e8/FLAG74b0d688b [2022-07-12 05:51:33,779 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 05:51:33,781 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c [2022-07-12 05:51:33,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12fb2c5d6/305aea7da67345218f7c1cc34fc342e8/FLAG74b0d688b [2022-07-12 05:51:33,803 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12fb2c5d6/305aea7da67345218f7c1cc34fc342e8 [2022-07-12 05:51:33,805 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 05:51:33,806 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 05:51:33,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 05:51:33,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 05:51:33,809 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 05:51:33,810 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:51:33" (1/1) ... [2022-07-12 05:51:33,811 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@733328e1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:33, skipping insertion in model container [2022-07-12 05:51:33,811 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 05:51:33" (1/1) ... [2022-07-12 05:51:33,815 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 05:51:33,889 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 05:51:34,194 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2022-07-12 05:51:34,202 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:51:34,218 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 05:51:34,292 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product26.cil.c[67702,67715] [2022-07-12 05:51:34,310 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 05:51:34,341 INFO L208 MainTranslator]: Completed translation [2022-07-12 05:51:34,341 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34 WrapperNode [2022-07-12 05:51:34,342 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 05:51:34,342 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 05:51:34,342 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 05:51:34,342 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 05:51:34,363 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,389 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,438 INFO L137 Inliner]: procedures = 91, calls = 346, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 863 [2022-07-12 05:51:34,438 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 05:51:34,439 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 05:51:34,439 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 05:51:34,439 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 05:51:34,444 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,451 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,474 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,489 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,493 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,498 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 05:51:34,498 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 05:51:34,499 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 05:51:34,499 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 05:51:34,500 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (1/1) ... [2022-07-12 05:51:34,517 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 05:51:34,535 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:51:34,547 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 05:51:34,553 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 05:51:34,580 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-12 05:51:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-12 05:51:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-12 05:51:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-12 05:51:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-12 05:51:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-12 05:51:34,581 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-12 05:51:34,581 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-12 05:51:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-12 05:51:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-12 05:51:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-12 05:51:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-12 05:51:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-12 05:51:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-12 05:51:34,582 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-12 05:51:34,582 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-12 05:51:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-12 05:51:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-12 05:51:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-12 05:51:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-12 05:51:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-12 05:51:34,583 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-12 05:51:34,583 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-12 05:51:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-12 05:51:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-12 05:51:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-12 05:51:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-12 05:51:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-12 05:51:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-12 05:51:34,584 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-12 05:51:34,584 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-12 05:51:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-12 05:51:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-12 05:51:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2022-07-12 05:51:34,585 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2022-07-12 05:51:34,585 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-12 05:51:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-12 05:51:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-12 05:51:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-12 05:51:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-12 05:51:34,586 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-12 05:51:34,586 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-12 05:51:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-12 05:51:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-12 05:51:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-12 05:51:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-12 05:51:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-12 05:51:34,587 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-12 05:51:34,587 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-12 05:51:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-12 05:51:34,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 05:51:34,588 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 05:51:34,589 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-12 05:51:34,589 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-12 05:51:34,725 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 05:51:34,726 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 05:51:35,527 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 05:51:35,537 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 05:51:35,537 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-12 05:51:35,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:51:35 BoogieIcfgContainer [2022-07-12 05:51:35,539 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 05:51:35,540 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 05:51:35,540 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 05:51:35,543 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 05:51:35,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 05:51:33" (1/3) ... [2022-07-12 05:51:35,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbc1cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:51:35, skipping insertion in model container [2022-07-12 05:51:35,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 05:51:34" (2/3) ... [2022-07-12 05:51:35,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6dbc1cb5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 05:51:35, skipping insertion in model container [2022-07-12 05:51:35,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 05:51:35" (3/3) ... [2022-07-12 05:51:35,545 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product26.cil.c [2022-07-12 05:51:35,554 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 05:51:35,554 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-12 05:51:35,603 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 05:51:35,607 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@74f7d85d, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6578919f [2022-07-12 05:51:35,607 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-12 05:51:35,612 INFO L276 IsEmpty]: Start isEmpty. Operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2022-07-12 05:51:35,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2022-07-12 05:51:35,633 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:35,634 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:51:35,634 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:35,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:35,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1615056188, now seen corresponding path program 1 times [2022-07-12 05:51:35,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:35,648 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466669879] [2022-07-12 05:51:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:35,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:35,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:36,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:36,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:36,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:36,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:36,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-12 05:51:36,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-12 05:51:36,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:36,282 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:51:36,283 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:36,283 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466669879] [2022-07-12 05:51:36,284 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466669879] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:36,284 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:36,284 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:51:36,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [106745731] [2022-07-12 05:51:36,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:36,289 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:51:36,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:36,310 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:51:36,311 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:51:36,316 INFO L87 Difference]: Start difference. First operand has 578 states, 449 states have (on average 1.6859688195991092) internal successors, (757), 469 states have internal predecessors, (757), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:41,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:51:41,681 INFO L93 Difference]: Finished difference Result 1437 states and 2483 transitions. [2022-07-12 05:51:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:51:41,684 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2022-07-12 05:51:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:51:41,706 INFO L225 Difference]: With dead ends: 1437 [2022-07-12 05:51:41,706 INFO L226 Difference]: Without dead ends: 863 [2022-07-12 05:51:41,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:51:41,723 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 922 mSDsluCounter, 2494 mSDsCounter, 0 mSdLazyCounter, 5098 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1025 SdHoareTripleChecker+Valid, 3454 SdHoareTripleChecker+Invalid, 5308 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 5098 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2022-07-12 05:51:41,724 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1025 Valid, 3454 Invalid, 5308 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [210 Valid, 5098 Invalid, 0 Unknown, 0 Unchecked, 4.5s Time] [2022-07-12 05:51:41,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 863 states. [2022-07-12 05:51:41,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 863 to 581. [2022-07-12 05:51:41,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.676991150442478) internal successors, (758), 472 states have internal predecessors, (758), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-07-12 05:51:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 963 transitions. [2022-07-12 05:51:41,877 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 963 transitions. Word has length 63 [2022-07-12 05:51:41,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:51:41,878 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 963 transitions. [2022-07-12 05:51:41,878 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.625) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:41,878 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 963 transitions. [2022-07-12 05:51:41,881 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 05:51:41,881 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:41,881 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:51:41,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-12 05:51:41,882 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:41,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:41,882 INFO L85 PathProgramCache]: Analyzing trace with hash -102377112, now seen corresponding path program 1 times [2022-07-12 05:51:41,883 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:41,883 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [214455077] [2022-07-12 05:51:41,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:41,883 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:41,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,019 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:42,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:42,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:42,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:42,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:51:42,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:51:42,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:42,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:51:42,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:42,163 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [214455077] [2022-07-12 05:51:42,163 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [214455077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:42,164 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:42,164 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:51:42,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171131691] [2022-07-12 05:51:42,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:42,165 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:51:42,165 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:42,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:51:42,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:51:42,166 INFO L87 Difference]: Start difference. First operand 581 states and 963 transitions. Second operand has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:47,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:51:47,009 INFO L93 Difference]: Finished difference Result 1431 states and 2447 transitions. [2022-07-12 05:51:47,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-12 05:51:47,009 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2022-07-12 05:51:47,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:51:47,018 INFO L225 Difference]: With dead ends: 1431 [2022-07-12 05:51:47,018 INFO L226 Difference]: Without dead ends: 866 [2022-07-12 05:51:47,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-07-12 05:51:47,025 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1485 mSDsluCounter, 2219 mSDsCounter, 0 mSdLazyCounter, 4959 mSolverCounterSat, 424 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1588 SdHoareTripleChecker+Valid, 3121 SdHoareTripleChecker+Invalid, 5383 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 424 IncrementalHoareTripleChecker+Valid, 4959 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:51:47,025 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1588 Valid, 3121 Invalid, 5383 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [424 Valid, 4959 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 05:51:47,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 866 states. [2022-07-12 05:51:47,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 866 to 581. [2022-07-12 05:51:47,078 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 452 states have (on average 1.674778761061947) internal successors, (757), 472 states have internal predecessors, (757), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2022-07-12 05:51:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 962 transitions. [2022-07-12 05:51:47,082 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 962 transitions. Word has length 64 [2022-07-12 05:51:47,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:51:47,083 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 962 transitions. [2022-07-12 05:51:47,083 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.75) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:47,083 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 962 transitions. [2022-07-12 05:51:47,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2022-07-12 05:51:47,088 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:47,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:51:47,088 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-12 05:51:47,088 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:47,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:47,089 INFO L85 PathProgramCache]: Analyzing trace with hash 638342732, now seen corresponding path program 1 times [2022-07-12 05:51:47,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:47,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [270000207] [2022-07-12 05:51:47,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:47,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:47,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:47,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:47,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:47,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:47,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-12 05:51:47,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-12 05:51:47,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-12 05:51:47,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:47,371 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:51:47,371 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:47,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [270000207] [2022-07-12 05:51:47,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [270000207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:47,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:47,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:51:47,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895109971] [2022-07-12 05:51:47,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:47,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:51:47,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:47,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:51:47,375 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:51:47,375 INFO L87 Difference]: Start difference. First operand 581 states and 962 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 05:51:50,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:51:50,849 INFO L93 Difference]: Finished difference Result 1422 states and 2427 transitions. [2022-07-12 05:51:50,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 05:51:50,849 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2022-07-12 05:51:50,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:51:50,854 INFO L225 Difference]: With dead ends: 1422 [2022-07-12 05:51:50,854 INFO L226 Difference]: Without dead ends: 826 [2022-07-12 05:51:50,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:51:50,857 INFO L413 NwaCegarLoop]: 936 mSDtfsCounter, 1389 mSDsluCounter, 1056 mSDsCounter, 0 mSdLazyCounter, 2358 mSolverCounterSat, 407 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 1992 SdHoareTripleChecker+Invalid, 2765 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 407 IncrementalHoareTripleChecker+Valid, 2358 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:51:50,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 1992 Invalid, 2765 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [407 Valid, 2358 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:51:50,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 826 states. [2022-07-12 05:51:50,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 826 to 557. [2022-07-12 05:51:50,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 557 states, 431 states have (on average 1.665893271461717) internal successors, (718), 449 states have internal predecessors, (718), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:51:50,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 557 states to 557 states and 919 transitions. [2022-07-12 05:51:50,890 INFO L78 Accepts]: Start accepts. Automaton has 557 states and 919 transitions. Word has length 64 [2022-07-12 05:51:50,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:51:50,891 INFO L495 AbstractCegarLoop]: Abstraction has 557 states and 919 transitions. [2022-07-12 05:51:50,891 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2022-07-12 05:51:50,907 INFO L276 IsEmpty]: Start isEmpty. Operand 557 states and 919 transitions. [2022-07-12 05:51:50,908 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-07-12 05:51:50,908 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:50,908 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:51:50,908 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-12 05:51:50,908 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:50,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:50,909 INFO L85 PathProgramCache]: Analyzing trace with hash 2003466896, now seen corresponding path program 1 times [2022-07-12 05:51:50,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:50,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956104347] [2022-07-12 05:51:50,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:50,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:50,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:51,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,144 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:51,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,149 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:51,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:51,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:51,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-12 05:51:51,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-12 05:51:51,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:51,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:51:51,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:51,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956104347] [2022-07-12 05:51:51,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956104347] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:51,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:51,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:51:51,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81133692] [2022-07-12 05:51:51,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:51,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:51:51,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:51,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:51:51,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:51:51,212 INFO L87 Difference]: Start difference. First operand 557 states and 919 transitions. Second operand has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:55,981 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:51:55,981 INFO L93 Difference]: Finished difference Result 1385 states and 2358 transitions. [2022-07-12 05:51:55,982 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:51:55,982 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2022-07-12 05:51:55,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:51:55,986 INFO L225 Difference]: With dead ends: 1385 [2022-07-12 05:51:55,987 INFO L226 Difference]: Without dead ends: 820 [2022-07-12 05:51:55,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:51:55,992 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 875 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 4926 mSolverCounterSat, 219 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 977 SdHoareTripleChecker+Valid, 2897 SdHoareTripleChecker+Invalid, 5145 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 219 IncrementalHoareTripleChecker+Valid, 4926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:51:55,993 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [977 Valid, 2897 Invalid, 5145 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [219 Valid, 4926 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-12 05:51:55,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-12 05:51:56,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 551. [2022-07-12 05:51:56,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 425 states have (on average 1.6588235294117648) internal successors, (705), 443 states have internal predecessors, (705), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:51:56,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 906 transitions. [2022-07-12 05:51:56,033 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 906 transitions. Word has length 65 [2022-07-12 05:51:56,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:51:56,033 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 906 transitions. [2022-07-12 05:51:56,034 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.875) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:51:56,034 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 906 transitions. [2022-07-12 05:51:56,035 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2022-07-12 05:51:56,035 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:51:56,035 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:51:56,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-12 05:51:56,035 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:51:56,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:51:56,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1654452592, now seen corresponding path program 1 times [2022-07-12 05:51:56,036 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:51:56,036 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515449523] [2022-07-12 05:51:56,036 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:51:56,037 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:51:56,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:56,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:56,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:51:56,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:51:56,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:51:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-12 05:51:56,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 58 [2022-07-12 05:51:56,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:51:56,326 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:51:56,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:51:56,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515449523] [2022-07-12 05:51:56,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515449523] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:51:56,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:51:56,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:51:56,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160962109] [2022-07-12 05:51:56,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:51:56,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:51:56,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:51:56,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:51:56,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:51:56,329 INFO L87 Difference]: Start difference. First operand 551 states and 906 transitions. Second operand has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:00,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:00,622 INFO L93 Difference]: Finished difference Result 1355 states and 2307 transitions. [2022-07-12 05:52:00,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:00,623 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2022-07-12 05:52:00,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:00,627 INFO L225 Difference]: With dead ends: 1355 [2022-07-12 05:52:00,627 INFO L226 Difference]: Without dead ends: 820 [2022-07-12 05:52:00,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:00,630 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1377 mSDsluCounter, 2294 mSDsCounter, 0 mSdLazyCounter, 4681 mSolverCounterSat, 416 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1479 SdHoareTripleChecker+Valid, 3175 SdHoareTripleChecker+Invalid, 5097 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 416 IncrementalHoareTripleChecker+Valid, 4681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:00,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1479 Valid, 3175 Invalid, 5097 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [416 Valid, 4681 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-12 05:52:00,631 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-12 05:52:00,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 551. [2022-07-12 05:52:00,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 551 states, 425 states have (on average 1.6564705882352941) internal successors, (704), 443 states have internal predecessors, (704), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:00,664 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 551 states to 551 states and 905 transitions. [2022-07-12 05:52:00,664 INFO L78 Accepts]: Start accepts. Automaton has 551 states and 905 transitions. Word has length 66 [2022-07-12 05:52:00,664 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:00,665 INFO L495 AbstractCegarLoop]: Abstraction has 551 states and 905 transitions. [2022-07-12 05:52:00,665 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:00,665 INFO L276 IsEmpty]: Start isEmpty. Operand 551 states and 905 transitions. [2022-07-12 05:52:00,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-12 05:52:00,666 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:00,666 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:00,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-12 05:52:00,666 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:00,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:00,666 INFO L85 PathProgramCache]: Analyzing trace with hash 1171237165, now seen corresponding path program 1 times [2022-07-12 05:52:00,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:00,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [53554373] [2022-07-12 05:52:00,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:00,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:00,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,859 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:00,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,865 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:00,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,897 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:00,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-12 05:52:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,918 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-12 05:52:00,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:00,920 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:00,920 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:00,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [53554373] [2022-07-12 05:52:00,921 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [53554373] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:00,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:00,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:00,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764601872] [2022-07-12 05:52:00,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:00,921 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:00,921 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:00,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:00,922 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:00,922 INFO L87 Difference]: Start difference. First operand 551 states and 905 transitions. Second operand has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:05,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:05,361 INFO L93 Difference]: Finished difference Result 1373 states and 2327 transitions. [2022-07-12 05:52:05,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:05,362 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 67 [2022-07-12 05:52:05,362 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:05,366 INFO L225 Difference]: With dead ends: 1373 [2022-07-12 05:52:05,366 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:52:05,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:05,368 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1389 mSDsluCounter, 2173 mSDsCounter, 0 mSdLazyCounter, 4677 mSolverCounterSat, 429 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1491 SdHoareTripleChecker+Valid, 3042 SdHoareTripleChecker+Invalid, 5106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 429 IncrementalHoareTripleChecker+Valid, 4677 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:05,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1491 Valid, 3042 Invalid, 5106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [429 Valid, 4677 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:52:05,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:52:05,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 545. [2022-07-12 05:52:05,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 419 states have (on average 1.6491646778042959) internal successors, (691), 437 states have internal predecessors, (691), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:05,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 892 transitions. [2022-07-12 05:52:05,404 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 892 transitions. Word has length 67 [2022-07-12 05:52:05,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:05,404 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 892 transitions. [2022-07-12 05:52:05,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.125) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:05,404 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 892 transitions. [2022-07-12 05:52:05,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-12 05:52:05,405 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:05,405 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:05,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-12 05:52:05,405 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:05,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:05,406 INFO L85 PathProgramCache]: Analyzing trace with hash 336986705, now seen corresponding path program 1 times [2022-07-12 05:52:05,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:05,406 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144519657] [2022-07-12 05:52:05,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:05,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:05,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,519 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:05,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:05,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,618 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:05,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:05,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,645 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:52:05,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-12 05:52:05,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:05,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:05,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:05,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144519657] [2022-07-12 05:52:05,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144519657] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:05,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:05,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:05,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1379145778] [2022-07-12 05:52:05,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:05,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:05,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:05,654 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:05,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:05,654 INFO L87 Difference]: Start difference. First operand 545 states and 892 transitions. Second operand has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:10,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:10,117 INFO L93 Difference]: Finished difference Result 1343 states and 2278 transitions. [2022-07-12 05:52:10,120 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:10,120 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 68 [2022-07-12 05:52:10,120 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:10,124 INFO L225 Difference]: With dead ends: 1343 [2022-07-12 05:52:10,124 INFO L226 Difference]: Without dead ends: 814 [2022-07-12 05:52:10,126 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:10,126 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 806 mSDsluCounter, 2403 mSDsCounter, 0 mSdLazyCounter, 4791 mSolverCounterSat, 206 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 908 SdHoareTripleChecker+Valid, 3284 SdHoareTripleChecker+Invalid, 4997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 206 IncrementalHoareTripleChecker+Valid, 4791 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:10,126 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [908 Valid, 3284 Invalid, 4997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [206 Valid, 4791 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:52:10,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 814 states. [2022-07-12 05:52:10,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 814 to 545. [2022-07-12 05:52:10,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 419 states have (on average 1.6467780429594272) internal successors, (690), 437 states have internal predecessors, (690), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:10,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 891 transitions. [2022-07-12 05:52:10,169 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 891 transitions. Word has length 68 [2022-07-12 05:52:10,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:10,169 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 891 transitions. [2022-07-12 05:52:10,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.25) internal successors, (50), 6 states have internal predecessors, (50), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:10,169 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 891 transitions. [2022-07-12 05:52:10,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 05:52:10,170 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:10,170 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:10,170 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-12 05:52:10,170 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:10,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:10,171 INFO L85 PathProgramCache]: Analyzing trace with hash -1481184175, now seen corresponding path program 1 times [2022-07-12 05:52:10,171 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:10,171 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1897647748] [2022-07-12 05:52:10,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:10,171 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:10,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:10,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:10,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:10,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:10,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:10,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 05:52:10,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:52:10,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:10,433 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:10,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:10,433 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1897647748] [2022-07-12 05:52:10,433 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1897647748] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:10,433 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:10,434 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:10,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922148235] [2022-07-12 05:52:10,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:10,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:10,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:10,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:10,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:10,435 INFO L87 Difference]: Start difference. First operand 545 states and 891 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:14,885 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:14,885 INFO L93 Difference]: Finished difference Result 1361 states and 2296 transitions. [2022-07-12 05:52:14,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:14,886 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2022-07-12 05:52:14,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:14,890 INFO L225 Difference]: With dead ends: 1361 [2022-07-12 05:52:14,890 INFO L226 Difference]: Without dead ends: 808 [2022-07-12 05:52:14,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:14,892 INFO L413 NwaCegarLoop]: 820 mSDtfsCounter, 833 mSDsluCounter, 2024 mSDsCounter, 0 mSdLazyCounter, 4763 mSolverCounterSat, 217 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 935 SdHoareTripleChecker+Valid, 2844 SdHoareTripleChecker+Invalid, 4980 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 217 IncrementalHoareTripleChecker+Valid, 4763 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:14,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [935 Valid, 2844 Invalid, 4980 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [217 Valid, 4763 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:52:14,893 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-07-12 05:52:14,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 539. [2022-07-12 05:52:14,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.639225181598063) internal successors, (677), 431 states have internal predecessors, (677), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:14,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 878 transitions. [2022-07-12 05:52:14,929 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 878 transitions. Word has length 69 [2022-07-12 05:52:14,929 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:14,930 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 878 transitions. [2022-07-12 05:52:14,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:14,930 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 878 transitions. [2022-07-12 05:52:14,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-12 05:52:14,930 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:14,931 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:14,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-12 05:52:14,931 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:14,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:14,931 INFO L85 PathProgramCache]: Analyzing trace with hash 1041535216, now seen corresponding path program 1 times [2022-07-12 05:52:14,931 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:14,931 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [465620082] [2022-07-12 05:52:14,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:14,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:14,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:15,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,142 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:15,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:15,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:15,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:15,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-12 05:52:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:52:15,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:15,202 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:15,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:15,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [465620082] [2022-07-12 05:52:15,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [465620082] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:15,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:15,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:15,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44149184] [2022-07-12 05:52:15,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:15,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:15,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:15,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:15,205 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:15,205 INFO L87 Difference]: Start difference. First operand 539 states and 878 transitions. Second operand has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:19,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:19,583 INFO L93 Difference]: Finished difference Result 1331 states and 2249 transitions. [2022-07-12 05:52:19,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:19,585 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 69 [2022-07-12 05:52:19,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:19,588 INFO L225 Difference]: With dead ends: 1331 [2022-07-12 05:52:19,588 INFO L226 Difference]: Without dead ends: 808 [2022-07-12 05:52:19,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:19,590 INFO L413 NwaCegarLoop]: 839 mSDtfsCounter, 791 mSDsluCounter, 2220 mSDsCounter, 0 mSdLazyCounter, 4666 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 893 SdHoareTripleChecker+Valid, 3059 SdHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 4666 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:19,591 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [893 Valid, 3059 Invalid, 4881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [215 Valid, 4666 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:52:19,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-07-12 05:52:19,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 539. [2022-07-12 05:52:19,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6368038740920097) internal successors, (676), 431 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:19,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 877 transitions. [2022-07-12 05:52:19,629 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 877 transitions. Word has length 69 [2022-07-12 05:52:19,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:19,630 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 877 transitions. [2022-07-12 05:52:19,630 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.375) internal successors, (51), 6 states have internal predecessors, (51), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:19,630 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 877 transitions. [2022-07-12 05:52:19,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 05:52:19,631 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:19,631 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:19,641 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-12 05:52:19,641 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:19,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:19,642 INFO L85 PathProgramCache]: Analyzing trace with hash -1077546921, now seen corresponding path program 1 times [2022-07-12 05:52:19,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:19,643 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1123264950] [2022-07-12 05:52:19,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:19,643 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:19,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,835 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:19,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,841 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:19,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:19,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:19,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:52:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:52:19,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:19,897 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:19,897 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:19,898 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1123264950] [2022-07-12 05:52:19,898 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1123264950] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:19,898 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:19,898 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:19,898 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142092991] [2022-07-12 05:52:19,898 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:19,898 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:19,898 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:19,899 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:19,899 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:19,899 INFO L87 Difference]: Start difference. First operand 539 states and 877 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:24,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:24,350 INFO L93 Difference]: Finished difference Result 1343 states and 2259 transitions. [2022-07-12 05:52:24,350 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-12 05:52:24,350 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-12 05:52:24,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:24,354 INFO L225 Difference]: With dead ends: 1343 [2022-07-12 05:52:24,354 INFO L226 Difference]: Without dead ends: 820 [2022-07-12 05:52:24,356 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:24,356 INFO L413 NwaCegarLoop]: 873 mSDtfsCounter, 778 mSDsluCounter, 2446 mSDsCounter, 0 mSdLazyCounter, 4683 mSolverCounterSat, 211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 880 SdHoareTripleChecker+Valid, 3319 SdHoareTripleChecker+Invalid, 4894 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 211 IncrementalHoareTripleChecker+Valid, 4683 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:24,356 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [880 Valid, 3319 Invalid, 4894 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [211 Valid, 4683 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-12 05:52:24,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 820 states. [2022-07-12 05:52:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 820 to 545. [2022-07-12 05:52:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 545 states, 419 states have (on average 1.6276849642004774) internal successors, (682), 437 states have internal predecessors, (682), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:24,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 545 states to 545 states and 883 transitions. [2022-07-12 05:52:24,396 INFO L78 Accepts]: Start accepts. Automaton has 545 states and 883 transitions. Word has length 70 [2022-07-12 05:52:24,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:24,396 INFO L495 AbstractCegarLoop]: Abstraction has 545 states and 883 transitions. [2022-07-12 05:52:24,396 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:24,396 INFO L276 IsEmpty]: Start isEmpty. Operand 545 states and 883 transitions. [2022-07-12 05:52:24,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-12 05:52:24,397 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:24,398 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:24,398 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-12 05:52:24,398 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:24,399 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:24,399 INFO L85 PathProgramCache]: Analyzing trace with hash -1921552423, now seen corresponding path program 1 times [2022-07-12 05:52:24,399 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:24,399 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1926866740] [2022-07-12 05:52:24,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:24,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:24,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:24,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:24,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:24,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:24,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-12 05:52:24,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,691 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-12 05:52:24,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:24,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:24,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:24,694 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1926866740] [2022-07-12 05:52:24,694 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1926866740] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:24,694 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:24,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-12 05:52:24,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145385649] [2022-07-12 05:52:24,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:24,695 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-12 05:52:24,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:24,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-12 05:52:24,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:24,696 INFO L87 Difference]: Start difference. First operand 545 states and 883 transitions. Second operand has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:28,920 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:28,920 INFO L93 Difference]: Finished difference Result 1346 states and 2260 transitions. [2022-07-12 05:52:28,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-12 05:52:28,921 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 70 [2022-07-12 05:52:28,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:28,925 INFO L225 Difference]: With dead ends: 1346 [2022-07-12 05:52:28,925 INFO L226 Difference]: Without dead ends: 808 [2022-07-12 05:52:28,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-12 05:52:28,927 INFO L413 NwaCegarLoop]: 784 mSDtfsCounter, 1360 mSDsluCounter, 1942 mSDsCounter, 0 mSdLazyCounter, 4504 mSolverCounterSat, 437 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1462 SdHoareTripleChecker+Valid, 2726 SdHoareTripleChecker+Invalid, 4941 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 437 IncrementalHoareTripleChecker+Valid, 4504 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:28,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1462 Valid, 2726 Invalid, 4941 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [437 Valid, 4504 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-12 05:52:28,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 808 states. [2022-07-12 05:52:28,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 808 to 539. [2022-07-12 05:52:28,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 539 states, 413 states have (on average 1.6343825665859564) internal successors, (675), 431 states have internal predecessors, (675), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2022-07-12 05:52:28,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 539 states to 539 states and 876 transitions. [2022-07-12 05:52:28,965 INFO L78 Accepts]: Start accepts. Automaton has 539 states and 876 transitions. Word has length 70 [2022-07-12 05:52:28,966 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:28,966 INFO L495 AbstractCegarLoop]: Abstraction has 539 states and 876 transitions. [2022-07-12 05:52:28,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.5) internal successors, (52), 6 states have internal predecessors, (52), 3 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:28,966 INFO L276 IsEmpty]: Start isEmpty. Operand 539 states and 876 transitions. [2022-07-12 05:52:28,967 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-12 05:52:28,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:28,967 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:28,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-12 05:52:28,967 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:28,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:28,967 INFO L85 PathProgramCache]: Analyzing trace with hash -1116442218, now seen corresponding path program 1 times [2022-07-12 05:52:28,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:28,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1277022529] [2022-07-12 05:52:28,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:28,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,099 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:29,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:29,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,177 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:29,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,178 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:29,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:29,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-12 05:52:29,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,194 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:52:29,195 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:29,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1277022529] [2022-07-12 05:52:29,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1277022529] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:52:29,195 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2051600271] [2022-07-12 05:52:29,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:29,195 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:52:29,195 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:52:29,197 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:52:29,200 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-12 05:52:29,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:29,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1491 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:52:29,434 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:52:29,489 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:52:29,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:52:29,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2051600271] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:29,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:52:29,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 05:52:29,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182074774] [2022-07-12 05:52:29,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:29,490 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:52:29,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:29,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:52:29,491 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:29,491 INFO L87 Difference]: Start difference. First operand 539 states and 876 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:29,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:29,593 INFO L93 Difference]: Finished difference Result 1529 states and 2518 transitions. [2022-07-12 05:52:29,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:52:29,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2022-07-12 05:52:29,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:29,598 INFO L225 Difference]: With dead ends: 1529 [2022-07-12 05:52:29,598 INFO L226 Difference]: Without dead ends: 1008 [2022-07-12 05:52:29,600 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:29,600 INFO L413 NwaCegarLoop]: 962 mSDtfsCounter, 844 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 844 SdHoareTripleChecker+Valid, 1736 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:29,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [844 Valid, 1736 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:52:29,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1008 states. [2022-07-12 05:52:29,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1008 to 993. [2022-07-12 05:52:29,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 993 states, 768 states have (on average 1.6484375) internal successors, (1266), 803 states have internal predecessors, (1266), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2022-07-12 05:52:29,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 993 states to 993 states and 1628 transitions. [2022-07-12 05:52:29,681 INFO L78 Accepts]: Start accepts. Automaton has 993 states and 1628 transitions. Word has length 71 [2022-07-12 05:52:29,681 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:29,682 INFO L495 AbstractCegarLoop]: Abstraction has 993 states and 1628 transitions. [2022-07-12 05:52:29,682 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:29,682 INFO L276 IsEmpty]: Start isEmpty. Operand 993 states and 1628 transitions. [2022-07-12 05:52:29,683 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-12 05:52:29,683 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:29,683 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:29,706 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-12 05:52:29,899 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,SelfDestructingSolverStorable11 [2022-07-12 05:52:29,900 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:29,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:29,900 INFO L85 PathProgramCache]: Analyzing trace with hash 1488771343, now seen corresponding path program 1 times [2022-07-12 05:52:29,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:29,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094718889] [2022-07-12 05:52:29,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:29,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:29,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:30,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:30,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:30,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:30,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,121 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:30,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-12 05:52:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,139 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:52:30,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:30,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094718889] [2022-07-12 05:52:30,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094718889] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:52:30,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1960175678] [2022-07-12 05:52:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:30,139 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:52:30,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:52:30,141 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:52:30,142 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-12 05:52:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:30,361 INFO L263 TraceCheckSpWp]: Trace formula consists of 1492 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-12 05:52:30,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:52:30,395 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:52:30,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:52:30,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1960175678] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:30,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:52:30,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-12 05:52:30,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758704095] [2022-07-12 05:52:30,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:30,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 05:52:30,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:30,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 05:52:30,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:30,397 INFO L87 Difference]: Start difference. First operand 993 states and 1628 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:30,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:30,522 INFO L93 Difference]: Finished difference Result 2437 states and 4024 transitions. [2022-07-12 05:52:30,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 05:52:30,522 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2022-07-12 05:52:30,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:30,527 INFO L225 Difference]: With dead ends: 2437 [2022-07-12 05:52:30,528 INFO L226 Difference]: Without dead ends: 1462 [2022-07-12 05:52:30,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 84 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:30,532 INFO L413 NwaCegarLoop]: 1017 mSDtfsCounter, 843 mSDsluCounter, 774 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 1791 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:30,533 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 1791 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-12 05:52:30,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1462 states. [2022-07-12 05:52:30,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1462 to 1414. [2022-07-12 05:52:30,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1414 states, 1096 states have (on average 1.6614963503649636) internal successors, (1821), 1148 states have internal predecessors, (1821), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2022-07-12 05:52:30,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1414 states to 1414 states and 2338 transitions. [2022-07-12 05:52:30,640 INFO L78 Accepts]: Start accepts. Automaton has 1414 states and 2338 transitions. Word has length 72 [2022-07-12 05:52:30,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:30,641 INFO L495 AbstractCegarLoop]: Abstraction has 1414 states and 2338 transitions. [2022-07-12 05:52:30,641 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2022-07-12 05:52:30,641 INFO L276 IsEmpty]: Start isEmpty. Operand 1414 states and 2338 transitions. [2022-07-12 05:52:30,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-12 05:52:30,642 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:30,643 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:30,660 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-12 05:52:30,851 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,SelfDestructingSolverStorable12 [2022-07-12 05:52:30,852 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:30,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:30,852 INFO L85 PathProgramCache]: Analyzing trace with hash 1710631331, now seen corresponding path program 1 times [2022-07-12 05:52:30,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:30,852 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1635468756] [2022-07-12 05:52:30,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:30,852 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:30,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:31,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,105 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:31,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:31,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:31,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:31,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:31,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:52:31,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-12 05:52:31,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:31,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:31,133 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:31,133 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1635468756] [2022-07-12 05:52:31,133 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1635468756] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:31,133 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:31,133 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:52:31,134 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652908121] [2022-07-12 05:52:31,135 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:31,135 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:52:31,135 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:31,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:52:31,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:52:31,136 INFO L87 Difference]: Start difference. First operand 1414 states and 2338 transitions. Second operand has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 05:52:39,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:39,825 INFO L93 Difference]: Finished difference Result 5718 states and 10228 transitions. [2022-07-12 05:52:39,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:52:39,826 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-12 05:52:39,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:39,850 INFO L225 Difference]: With dead ends: 5718 [2022-07-12 05:52:39,850 INFO L226 Difference]: Without dead ends: 4322 [2022-07-12 05:52:39,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:52:39,857 INFO L413 NwaCegarLoop]: 1045 mSDtfsCounter, 3420 mSDsluCounter, 2148 mSDsCounter, 0 mSdLazyCounter, 5591 mSolverCounterSat, 1189 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3557 SdHoareTripleChecker+Valid, 3193 SdHoareTripleChecker+Invalid, 6780 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1189 IncrementalHoareTripleChecker+Valid, 5591 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.3s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:39,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3557 Valid, 3193 Invalid, 6780 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1189 Valid, 5591 Invalid, 0 Unknown, 0 Unchecked, 7.3s Time] [2022-07-12 05:52:39,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4322 states. [2022-07-12 05:52:40,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4322 to 3443. [2022-07-12 05:52:40,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3443 states, 2523 states have (on average 1.6302021403091558) internal successors, (4113), 2719 states have internal predecessors, (4113), 757 states have call successors, (757), 118 states have call predecessors, (757), 162 states have return successors, (1241), 755 states have call predecessors, (1241), 753 states have call successors, (1241) [2022-07-12 05:52:40,312 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3443 states to 3443 states and 6111 transitions. [2022-07-12 05:52:40,313 INFO L78 Accepts]: Start accepts. Automaton has 3443 states and 6111 transitions. Word has length 74 [2022-07-12 05:52:40,313 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:40,313 INFO L495 AbstractCegarLoop]: Abstraction has 3443 states and 6111 transitions. [2022-07-12 05:52:40,314 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.75) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-12 05:52:40,314 INFO L276 IsEmpty]: Start isEmpty. Operand 3443 states and 6111 transitions. [2022-07-12 05:52:40,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 05:52:40,315 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:40,315 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:40,315 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-12 05:52:40,315 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:40,315 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:40,315 INFO L85 PathProgramCache]: Analyzing trace with hash -229252298, now seen corresponding path program 1 times [2022-07-12 05:52:40,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:40,316 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260449756] [2022-07-12 05:52:40,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:40,316 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,452 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:40,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,539 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:40,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:40,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,543 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:40,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:52:40,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:52:40,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,553 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-12 05:52:40,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260449756] [2022-07-12 05:52:40,553 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260449756] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:52:40,553 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [308089186] [2022-07-12 05:52:40,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:40,553 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:52:40,553 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:52:40,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:52:40,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-12 05:52:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:40,801 INFO L263 TraceCheckSpWp]: Trace formula consists of 1510 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 05:52:40,804 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:52:40,883 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 05:52:40,883 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:52:40,883 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [308089186] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:40,883 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:52:40,883 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [8] total 11 [2022-07-12 05:52:40,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1403025921] [2022-07-12 05:52:40,884 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:40,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 05:52:40,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:40,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 05:52:40,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2022-07-12 05:52:40,884 INFO L87 Difference]: Start difference. First operand 3443 states and 6111 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 05:52:41,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:41,791 INFO L93 Difference]: Finished difference Result 9438 states and 16954 transitions. [2022-07-12 05:52:41,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-12 05:52:41,792 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-07-12 05:52:41,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:41,834 INFO L225 Difference]: With dead ends: 9438 [2022-07-12 05:52:41,834 INFO L226 Difference]: Without dead ends: 6013 [2022-07-12 05:52:41,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 87 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2022-07-12 05:52:41,857 INFO L413 NwaCegarLoop]: 993 mSDtfsCounter, 847 mSDsluCounter, 2767 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 852 SdHoareTripleChecker+Valid, 3760 SdHoareTripleChecker+Invalid, 301 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:41,857 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [852 Valid, 3760 Invalid, 301 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-12 05:52:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6013 states. [2022-07-12 05:52:42,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6013 to 5856. [2022-07-12 05:52:42,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5856 states, 4296 states have (on average 1.5861266294227188) internal successors, (6814), 4622 states have internal predecessors, (6814), 1264 states have call successors, (1264), 210 states have call predecessors, (1264), 295 states have return successors, (2174), 1273 states have call predecessors, (2174), 1258 states have call successors, (2174) [2022-07-12 05:52:42,539 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5856 states to 5856 states and 10252 transitions. [2022-07-12 05:52:42,540 INFO L78 Accepts]: Start accepts. Automaton has 5856 states and 10252 transitions. Word has length 75 [2022-07-12 05:52:42,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:42,541 INFO L495 AbstractCegarLoop]: Abstraction has 5856 states and 10252 transitions. [2022-07-12 05:52:42,541 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-12 05:52:42,541 INFO L276 IsEmpty]: Start isEmpty. Operand 5856 states and 10252 transitions. [2022-07-12 05:52:42,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-12 05:52:42,542 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:42,542 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:42,560 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-12 05:52:42,759 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:52:42,759 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:42,760 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:42,760 INFO L85 PathProgramCache]: Analyzing trace with hash -41120062, now seen corresponding path program 1 times [2022-07-12 05:52:42,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:42,760 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1334328819] [2022-07-12 05:52:42,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:42,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:42,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:42,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:42,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,966 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:42,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:42,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:52:42,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-12 05:52:42,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:42,993 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-12 05:52:42,993 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:42,993 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1334328819] [2022-07-12 05:52:42,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1334328819] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:42,994 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:42,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:52:42,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689075162] [2022-07-12 05:52:42,994 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:42,994 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:52:42,994 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:42,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:52:42,995 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:52:42,995 INFO L87 Difference]: Start difference. First operand 5856 states and 10252 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 05:52:47,079 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:47,080 INFO L93 Difference]: Finished difference Result 12920 states and 23086 transitions. [2022-07-12 05:52:47,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:52:47,081 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2022-07-12 05:52:47,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:47,112 INFO L225 Difference]: With dead ends: 12920 [2022-07-12 05:52:47,112 INFO L226 Difference]: Without dead ends: 7082 [2022-07-12 05:52:47,132 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:52:47,133 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 1288 mSDsluCounter, 1036 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 388 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1390 SdHoareTripleChecker+Valid, 1911 SdHoareTripleChecker+Invalid, 2598 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 388 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:47,133 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1390 Valid, 1911 Invalid, 2598 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [388 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-07-12 05:52:47,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7082 states. [2022-07-12 05:52:47,808 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7082 to 6296. [2022-07-12 05:52:47,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6296 states, 4494 states have (on average 1.577659101023587) internal successors, (7090), 4860 states have internal predecessors, (7090), 1496 states have call successors, (1496), 214 states have call predecessors, (1496), 305 states have return successors, (2593), 1511 states have call predecessors, (2593), 1490 states have call successors, (2593) [2022-07-12 05:52:47,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6296 states to 6296 states and 11179 transitions. [2022-07-12 05:52:47,895 INFO L78 Accepts]: Start accepts. Automaton has 6296 states and 11179 transitions. Word has length 75 [2022-07-12 05:52:47,895 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:47,895 INFO L495 AbstractCegarLoop]: Abstraction has 6296 states and 11179 transitions. [2022-07-12 05:52:47,896 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-12 05:52:47,896 INFO L276 IsEmpty]: Start isEmpty. Operand 6296 states and 11179 transitions. [2022-07-12 05:52:47,897 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-07-12 05:52:47,897 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:47,897 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:52:47,897 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-12 05:52:47,898 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:47,898 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:47,898 INFO L85 PathProgramCache]: Analyzing trace with hash -1571611657, now seen corresponding path program 1 times [2022-07-12 05:52:47,898 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:47,898 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444859486] [2022-07-12 05:52:47,898 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:47,898 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:47,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:48,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:48,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:52:48,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:52:48,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:48,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:52:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:52:48,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,173 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:52:48,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,181 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-12 05:52:48,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:48,183 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-12 05:52:48,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:52:48,183 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444859486] [2022-07-12 05:52:48,183 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444859486] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:52:48,183 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:52:48,183 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:52:48,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074628335] [2022-07-12 05:52:48,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:52:48,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:52:48,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:52:48,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:52:48,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:52:48,185 INFO L87 Difference]: Start difference. First operand 6296 states and 11179 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 05:52:58,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:52:58,069 INFO L93 Difference]: Finished difference Result 21126 states and 40162 transitions. [2022-07-12 05:52:58,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:52:58,070 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2022-07-12 05:52:58,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:52:58,146 INFO L225 Difference]: With dead ends: 21126 [2022-07-12 05:52:58,146 INFO L226 Difference]: Without dead ends: 14848 [2022-07-12 05:52:58,174 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:52:58,175 INFO L413 NwaCegarLoop]: 975 mSDtfsCounter, 3451 mSDsluCounter, 2023 mSDsCounter, 0 mSdLazyCounter, 5468 mSolverCounterSat, 1181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3586 SdHoareTripleChecker+Valid, 2998 SdHoareTripleChecker+Invalid, 6649 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1181 IncrementalHoareTripleChecker+Valid, 5468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:52:58,175 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3586 Valid, 2998 Invalid, 6649 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1181 Valid, 5468 Invalid, 0 Unknown, 0 Unchecked, 7.1s Time] [2022-07-12 05:52:58,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14848 states. [2022-07-12 05:52:59,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14848 to 12492. [2022-07-12 05:52:59,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12492 states, 8918 states have (on average 1.575577483740749) internal successors, (14051), 9644 states have internal predecessors, (14051), 2964 states have call successors, (2964), 422 states have call predecessors, (2964), 609 states have return successors, (5815), 3005 states have call predecessors, (5815), 2954 states have call successors, (5815) [2022-07-12 05:52:59,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12492 states to 12492 states and 22830 transitions. [2022-07-12 05:52:59,812 INFO L78 Accepts]: Start accepts. Automaton has 12492 states and 22830 transitions. Word has length 83 [2022-07-12 05:52:59,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:52:59,813 INFO L495 AbstractCegarLoop]: Abstraction has 12492 states and 22830 transitions. [2022-07-12 05:52:59,813 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 5 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2022-07-12 05:52:59,813 INFO L276 IsEmpty]: Start isEmpty. Operand 12492 states and 22830 transitions. [2022-07-12 05:52:59,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-07-12 05:52:59,814 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:52:59,814 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] [2022-07-12 05:52:59,815 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-12 05:52:59,815 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:52:59,815 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:52:59,815 INFO L85 PathProgramCache]: Analyzing trace with hash 475861302, now seen corresponding path program 1 times [2022-07-12 05:52:59,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:52:59,815 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [977715068] [2022-07-12 05:52:59,815 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:52:59,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:52:59,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:52:59,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:52:59,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:00,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:53:00,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:00,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:00,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:53:00,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:53:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:53:00,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-12 05:53:00,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:00,044 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-12 05:53:00,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:53:00,044 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [977715068] [2022-07-12 05:53:00,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [977715068] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:53:00,044 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:53:00,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:53:00,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351651825] [2022-07-12 05:53:00,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:53:00,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:53:00,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:53:00,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:53:00,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:53:00,045 INFO L87 Difference]: Start difference. First operand 12492 states and 22830 transitions. Second operand has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 05:53:05,231 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:53:05,231 INFO L93 Difference]: Finished difference Result 26506 states and 49497 transitions. [2022-07-12 05:53:05,232 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:53:05,232 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2022-07-12 05:53:05,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:53:05,393 INFO L225 Difference]: With dead ends: 26506 [2022-07-12 05:53:05,393 INFO L226 Difference]: Without dead ends: 14032 [2022-07-12 05:53:05,441 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:53:05,441 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 1306 mSDsluCounter, 1020 mSDsCounter, 0 mSdLazyCounter, 2207 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1409 SdHoareTripleChecker+Valid, 1885 SdHoareTripleChecker+Invalid, 2601 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 2207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-12 05:53:05,442 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1409 Valid, 1885 Invalid, 2601 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 2207 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-12 05:53:05,451 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14032 states. [2022-07-12 05:53:06,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14032 to 12532. [2022-07-12 05:53:06,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12532 states, 8954 states have (on average 1.5737100737100738) internal successors, (14091), 9672 states have internal predecessors, (14091), 2964 states have call successors, (2964), 438 states have call predecessors, (2964), 613 states have return successors, (5795), 3001 states have call predecessors, (5795), 2954 states have call successors, (5795) [2022-07-12 05:53:06,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12532 states to 12532 states and 22850 transitions. [2022-07-12 05:53:07,000 INFO L78 Accepts]: Start accepts. Automaton has 12532 states and 22850 transitions. Word has length 84 [2022-07-12 05:53:07,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:53:07,000 INFO L495 AbstractCegarLoop]: Abstraction has 12532 states and 22850 transitions. [2022-07-12 05:53:07,000 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.333333333333334) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2022-07-12 05:53:07,000 INFO L276 IsEmpty]: Start isEmpty. Operand 12532 states and 22850 transitions. [2022-07-12 05:53:07,002 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-07-12 05:53:07,002 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:53:07,002 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:53:07,002 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-12 05:53:07,002 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:53:07,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:53:07,003 INFO L85 PathProgramCache]: Analyzing trace with hash -544941312, now seen corresponding path program 1 times [2022-07-12 05:53:07,003 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:53:07,003 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [590243794] [2022-07-12 05:53:07,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:53:07,003 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:53:07,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,158 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:07,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:07,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:53:07,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:07,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:07,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,248 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:53:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:53:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:53:07,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:53:07,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,263 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:53:07,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:07,266 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-12 05:53:07,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:53:07,266 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [590243794] [2022-07-12 05:53:07,266 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [590243794] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:53:07,266 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:53:07,266 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:53:07,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226401361] [2022-07-12 05:53:07,267 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:53:07,267 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:53:07,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:53:07,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:53:07,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:53:07,268 INFO L87 Difference]: Start difference. First operand 12532 states and 22850 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:53:19,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:53:19,256 INFO L93 Difference]: Finished difference Result 42226 states and 86818 transitions. [2022-07-12 05:53:19,256 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-12 05:53:19,257 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2022-07-12 05:53:19,257 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:53:19,492 INFO L225 Difference]: With dead ends: 42226 [2022-07-12 05:53:19,493 INFO L226 Difference]: Without dead ends: 29712 [2022-07-12 05:53:19,581 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-12 05:53:19,582 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 3450 mSDsluCounter, 1991 mSDsCounter, 0 mSdLazyCounter, 5464 mSolverCounterSat, 1174 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3585 SdHoareTripleChecker+Valid, 2973 SdHoareTripleChecker+Invalid, 6638 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1174 IncrementalHoareTripleChecker+Valid, 5464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.4s IncrementalHoareTripleChecker+Time [2022-07-12 05:53:19,582 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3585 Valid, 2973 Invalid, 6638 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1174 Valid, 5464 Invalid, 0 Unknown, 0 Unchecked, 7.4s Time] [2022-07-12 05:53:19,604 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29712 states. [2022-07-12 05:53:22,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29712 to 25004. [2022-07-12 05:53:22,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25004 states, 17868 states have (on average 1.5713566151779719) internal successors, (28077), 19298 states have internal predecessors, (28077), 5906 states have call successors, (5906), 870 states have call predecessors, (5906), 1229 states have return successors, (13513), 5995 states have call predecessors, (13513), 5888 states have call successors, (13513) [2022-07-12 05:53:23,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25004 states to 25004 states and 47496 transitions. [2022-07-12 05:53:23,189 INFO L78 Accepts]: Start accepts. Automaton has 25004 states and 47496 transitions. Word has length 93 [2022-07-12 05:53:23,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:53:23,190 INFO L495 AbstractCegarLoop]: Abstraction has 25004 states and 47496 transitions. [2022-07-12 05:53:23,190 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2022-07-12 05:53:23,190 INFO L276 IsEmpty]: Start isEmpty. Operand 25004 states and 47496 transitions. [2022-07-12 05:53:23,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-07-12 05:53:23,191 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:53:23,192 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:53:23,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-12 05:53:23,192 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:53:23,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:53:23,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1425169813, now seen corresponding path program 1 times [2022-07-12 05:53:23,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:53:23,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [623928601] [2022-07-12 05:53:23,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:53:23,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:53:23,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:23,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:53:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:23,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:23,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:53:23,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:53:23,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:53:23,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:53:23,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 86 [2022-07-12 05:53:23,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:23,393 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-12 05:53:23,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:53:23,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [623928601] [2022-07-12 05:53:23,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [623928601] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:53:23,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:53:23,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-12 05:53:23,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1759766154] [2022-07-12 05:53:23,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:53:23,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-12 05:53:23,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:53:23,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-12 05:53:23,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-12 05:53:23,395 INFO L87 Difference]: Start difference. First operand 25004 states and 47496 transitions. Second operand has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:53:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:53:31,028 INFO L93 Difference]: Finished difference Result 53042 states and 105062 transitions. [2022-07-12 05:53:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-12 05:53:31,029 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2022-07-12 05:53:31,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:53:31,244 INFO L225 Difference]: With dead ends: 53042 [2022-07-12 05:53:31,244 INFO L226 Difference]: Without dead ends: 28056 [2022-07-12 05:53:31,427 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-12 05:53:31,428 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 1304 mSDsluCounter, 1029 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 390 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1406 SdHoareTripleChecker+Valid, 1898 SdHoareTripleChecker+Invalid, 2600 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 390 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-12 05:53:31,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1406 Valid, 1898 Invalid, 2600 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [390 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-12 05:53:31,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28056 states. [2022-07-12 05:53:34,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28056 to 25084. [2022-07-12 05:53:34,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25084 states, 17940 states have (on average 1.5695094760312152) internal successors, (28157), 19370 states have internal predecessors, (28157), 5906 states have call successors, (5906), 886 states have call predecessors, (5906), 1237 states have return successors, (13485), 5987 states have call predecessors, (13485), 5888 states have call successors, (13485) [2022-07-12 05:53:34,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25084 states to 25084 states and 47548 transitions. [2022-07-12 05:53:34,945 INFO L78 Accepts]: Start accepts. Automaton has 25084 states and 47548 transitions. Word has length 94 [2022-07-12 05:53:34,945 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:53:34,946 INFO L495 AbstractCegarLoop]: Abstraction has 25084 states and 47548 transitions. [2022-07-12 05:53:34,946 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.333333333333334) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 4 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-07-12 05:53:34,946 INFO L276 IsEmpty]: Start isEmpty. Operand 25084 states and 47548 transitions. [2022-07-12 05:53:34,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-07-12 05:53:34,948 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:53:34,948 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 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] [2022-07-12 05:53:34,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-12 05:53:34,948 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:53:34,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:53:34,949 INFO L85 PathProgramCache]: Analyzing trace with hash -346131133, now seen corresponding path program 1 times [2022-07-12 05:53:34,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:53:34,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125149237] [2022-07-12 05:53:34,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:53:34,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:53:34,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,087 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:35,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:35,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,164 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:53:35,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:35,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:35,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-12 05:53:35,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-12 05:53:35,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:53:35,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-12 05:53:35,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-12 05:53:35,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,382 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-12 05:53:35,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,383 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-12 05:53:35,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 120 [2022-07-12 05:53:35,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,385 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-12 05:53:35,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:53:35,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125149237] [2022-07-12 05:53:35,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125149237] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-12 05:53:35,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1928156569] [2022-07-12 05:53:35,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:53:35,386 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:53:35,386 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 05:53:35,387 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-12 05:53:35,389 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-12 05:53:35,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:35,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1840 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-12 05:53:35,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 05:53:35,768 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-12 05:53:35,769 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 05:53:35,769 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1928156569] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:53:35,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-12 05:53:35,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-12 05:53:35,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48380152] [2022-07-12 05:53:35,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:53:35,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:53:35,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:53:35,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:53:35,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-12 05:53:35,771 INFO L87 Difference]: Start difference. First operand 25084 states and 47548 transitions. Second operand has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 05:53:48,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 05:53:48,045 INFO L93 Difference]: Finished difference Result 91241 states and 181226 transitions. [2022-07-12 05:53:48,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-12 05:53:48,046 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 128 [2022-07-12 05:53:48,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 05:53:48,670 INFO L225 Difference]: With dead ends: 91241 [2022-07-12 05:53:48,670 INFO L226 Difference]: Without dead ends: 66175 [2022-07-12 05:53:48,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 145 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-07-12 05:53:48,831 INFO L413 NwaCegarLoop]: 1546 mSDtfsCounter, 2606 mSDsluCounter, 1769 mSDsCounter, 0 mSdLazyCounter, 6080 mSolverCounterSat, 585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2765 SdHoareTripleChecker+Valid, 3315 SdHoareTripleChecker+Invalid, 6665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 585 IncrementalHoareTripleChecker+Valid, 6080 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-07-12 05:53:48,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2765 Valid, 3315 Invalid, 6665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [585 Valid, 6080 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-07-12 05:53:48,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66175 states. [2022-07-12 05:53:57,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66175 to 60374. [2022-07-12 05:53:57,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60374 states, 44132 states have (on average 1.569178827154899) internal successors, (69251), 47402 states have internal predecessors, (69251), 13084 states have call successors, (13084), 2206 states have call predecessors, (13084), 3157 states have return successors, (33827), 13357 states have call predecessors, (33827), 13050 states have call successors, (33827) [2022-07-12 05:53:57,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60374 states to 60374 states and 116162 transitions. [2022-07-12 05:53:57,889 INFO L78 Accepts]: Start accepts. Automaton has 60374 states and 116162 transitions. Word has length 128 [2022-07-12 05:53:57,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 05:53:57,890 INFO L495 AbstractCegarLoop]: Abstraction has 60374 states and 116162 transitions. [2022-07-12 05:53:57,890 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.125) internal successors, (89), 7 states have internal predecessors, (89), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2022-07-12 05:53:57,890 INFO L276 IsEmpty]: Start isEmpty. Operand 60374 states and 116162 transitions. [2022-07-12 05:53:57,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-07-12 05:53:57,891 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 05:53:57,891 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-12 05:53:57,910 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-12 05:53:58,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-12 05:53:58,091 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-12 05:53:58,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 05:53:58,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2101931910, now seen corresponding path program 1 times [2022-07-12 05:53:58,092 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-12 05:53:58,092 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [283438096] [2022-07-12 05:53:58,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 05:53:58,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-12 05:53:58,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,233 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:58,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,314 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:58,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-12 05:53:58,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-12 05:53:58,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-12 05:53:58,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-12 05:53:58,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-12 05:53:58,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-12 05:53:58,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-12 05:53:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-12 05:53:58,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2022-07-12 05:53:58,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 05:53:58,345 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-12 05:53:58,345 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-12 05:53:58,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [283438096] [2022-07-12 05:53:58,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [283438096] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 05:53:58,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 05:53:58,346 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-12 05:53:58,346 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1784183618] [2022-07-12 05:53:58,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 05:53:58,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-12 05:53:58,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-12 05:53:58,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-12 05:53:58,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-12 05:53:58,347 INFO L87 Difference]: Start difference. First operand 60374 states and 116162 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 5 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11)