./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 17:34:23,863 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 17:34:23,865 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 17:34:23,890 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 17:34:23,890 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 17:34:23,891 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 17:34:23,892 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 17:34:23,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 17:34:23,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 17:34:23,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 17:34:23,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 17:34:23,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 17:34:23,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 17:34:23,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 17:34:23,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 17:34:23,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 17:34:23,900 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 17:34:23,901 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 17:34:23,902 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 17:34:23,903 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 17:34:23,904 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 17:34:23,905 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 17:34:23,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 17:34:23,906 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 17:34:23,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 17:34:23,909 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 17:34:23,909 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 17:34:23,910 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 17:34:23,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 17:34:23,910 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 17:34:23,911 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 17:34:23,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 17:34:23,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 17:34:23,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 17:34:23,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 17:34:23,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 17:34:23,914 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 17:34:23,914 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 17:34:23,915 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 17:34:23,915 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 17:34:23,915 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 17:34:23,916 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 17:34:23,917 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 17:34:23,931 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 17:34:23,931 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 17:34:23,931 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 17:34:23,931 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 17:34:23,932 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 17:34:23,932 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 17:34:23,933 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 17:34:23,933 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 17:34:23,933 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 17:34:23,933 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 17:34:23,933 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 17:34:23,934 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 17:34:23,935 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 17:34:23,935 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 17:34:23,935 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 17:34:23,935 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 17:34:23,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 17:34:23,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 17:34:23,936 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 17:34:23,936 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:34:23,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 17:34:23,936 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 17:34:23,937 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 17:34:23,937 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 17:34:23,937 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 17:34:23,937 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 17:34:23,938 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 17:34:23,938 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 17:34:23,938 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4fa4154afcc1fa94c570756c4d3485a9415aeef22801b46450f13cd61ecf8230 [2022-07-13 17:34:24,119 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 17:34:24,142 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 17:34:24,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 17:34:24,145 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 17:34:24,146 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 17:34:24,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-07-13 17:34:24,205 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f89cea3/a83c82c11a084925a76f2fc0dd70b151/FLAG4a8b2c8af [2022-07-13 17:34:24,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 17:34:24,675 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec3_product30.cil.c [2022-07-13 17:34:24,694 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f89cea3/a83c82c11a084925a76f2fc0dd70b151/FLAG4a8b2c8af [2022-07-13 17:34:25,168 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/14f89cea3/a83c82c11a084925a76f2fc0dd70b151 [2022-07-13 17:34:25,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 17:34:25,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 17:34:25,180 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 17:34:25,181 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 17:34:25,184 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 17:34:25,185 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,186 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42edc0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25, skipping insertion in model container [2022-07-13 17:34:25,186 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,190 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 17:34:25,246 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 17:34:25,480 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_product30.cil.c[14523,14536] [2022-07-13 17:34:25,600 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:34:25,606 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 17:34:25,636 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_product30.cil.c[14523,14536] [2022-07-13 17:34:25,689 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 17:34:25,711 INFO L208 MainTranslator]: Completed translation [2022-07-13 17:34:25,711 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25 WrapperNode [2022-07-13 17:34:25,712 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 17:34:25,712 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 17:34:25,713 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 17:34:25,713 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 17:34:25,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,745 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,792 INFO L137 Inliner]: procedures = 93, calls = 353, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 949 [2022-07-13 17:34:25,795 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 17:34:25,796 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 17:34:25,797 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 17:34:25,797 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 17:34:25,802 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,802 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,815 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,816 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,834 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,842 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 17:34:25,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 17:34:25,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 17:34:25,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 17:34:25,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (1/1) ... [2022-07-13 17:34:25,877 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 17:34:25,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:34:25,898 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 17:34:25,899 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 17:34:25,922 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 17:34:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-07-13 17:34:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-07-13 17:34:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-07-13 17:34:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-07-13 17:34:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-13 17:34:25,923 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-13 17:34:25,923 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-13 17:34:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-13 17:34:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-07-13 17:34:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-07-13 17:34:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-13 17:34:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-13 17:34:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-07-13 17:34:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-07-13 17:34:25,924 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-13 17:34:25,924 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-13 17:34:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-13 17:34:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-13 17:34:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-13 17:34:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-13 17:34:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-13 17:34:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-13 17:34:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-13 17:34:25,925 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-13 17:34:25,925 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-13 17:34:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-13 17:34:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-13 17:34:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-13 17:34:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2022-07-13 17:34:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2022-07-13 17:34:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-13 17:34:25,926 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-13 17:34:25,926 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2022-07-13 17:34:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2022-07-13 17:34:25,927 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-13 17:34:25,927 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-13 17:34:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-13 17:34:25,931 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-13 17:34:25,931 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-13 17:34:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-13 17:34:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-13 17:34:25,944 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-13 17:34:25,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 17:34:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-07-13 17:34:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-07-13 17:34:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-13 17:34:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-13 17:34:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-13 17:34:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-13 17:34:25,945 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-13 17:34:25,945 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-13 17:34:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-07-13 17:34:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-07-13 17:34:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 17:34:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 17:34:25,946 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-13 17:34:25,946 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-13 17:34:26,100 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 17:34:26,102 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 17:34:26,818 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 17:34:26,831 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 17:34:26,831 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 17:34:26,834 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:34:26 BoogieIcfgContainer [2022-07-13 17:34:26,834 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 17:34:26,836 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 17:34:26,837 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 17:34:26,839 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 17:34:26,839 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 05:34:25" (1/3) ... [2022-07-13 17:34:26,839 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3284ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:34:26, skipping insertion in model container [2022-07-13 17:34:26,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 05:34:25" (2/3) ... [2022-07-13 17:34:26,840 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e3284ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 05:34:26, skipping insertion in model container [2022-07-13 17:34:26,840 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 05:34:26" (3/3) ... [2022-07-13 17:34:26,841 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product30.cil.c [2022-07-13 17:34:26,850 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 17:34:26,850 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 17:34:26,901 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 17:34:26,905 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@35ea0fc2, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3ded8eb5 [2022-07-13 17:34:26,905 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 17:34:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) [2022-07-13 17:34:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-07-13 17:34:26,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:26,924 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] [2022-07-13 17:34:26,924 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:26,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:26,927 INFO L85 PathProgramCache]: Analyzing trace with hash 1554402963, now seen corresponding path program 1 times [2022-07-13 17:34:26,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:26,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967852246] [2022-07-13 17:34:26,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:26,934 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:27,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:27,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,505 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:27,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,514 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:27,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,544 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:27,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:27,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,596 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-13 17:34:27,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,600 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:34:27,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,603 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-13 17:34:27,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:27,607 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:27,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:27,608 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967852246] [2022-07-13 17:34:27,608 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [967852246] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:27,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:27,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:34:27,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702535210] [2022-07-13 17:34:27,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:27,615 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:34:27,617 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:27,646 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:34:27,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:34:27,651 INFO L87 Difference]: Start difference. First operand has 605 states, 468 states have (on average 1.6752136752136753) internal successors, (784), 488 states have internal predecessors, (784), 108 states have call successors, (108), 27 states have call predecessors, (108), 27 states have return successors, (108), 104 states have call predecessors, (108), 108 states have call successors, (108) 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:32,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:32,868 INFO L93 Difference]: Finished difference Result 1491 states and 2561 transitions. [2022-07-13 17:34:32,869 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:34:32,870 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 67 [2022-07-13 17:34:32,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:32,887 INFO L225 Difference]: With dead ends: 1491 [2022-07-13 17:34:32,887 INFO L226 Difference]: Without dead ends: 890 [2022-07-13 17:34:32,895 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:34:32,898 INFO L413 NwaCegarLoop]: 897 mSDtfsCounter, 1581 mSDsluCounter, 2043 mSDsCounter, 0 mSdLazyCounter, 5054 mSolverCounterSat, 463 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1690 SdHoareTripleChecker+Valid, 2940 SdHoareTripleChecker+Invalid, 5517 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 463 IncrementalHoareTripleChecker+Valid, 5054 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:32,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1690 Valid, 2940 Invalid, 5517 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [463 Valid, 5054 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-13 17:34:32,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 890 states. [2022-07-13 17:34:33,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 890 to 608. [2022-07-13 17:34:33,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.6666666666666667) internal successors, (785), 491 states have internal predecessors, (785), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-13 17:34:33,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1002 transitions. [2022-07-13 17:34:33,019 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1002 transitions. Word has length 67 [2022-07-13 17:34:33,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:33,019 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1002 transitions. [2022-07-13 17:34:33,020 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1002 transitions. [2022-07-13 17:34:33,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 17:34:33,023 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:33,023 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] [2022-07-13 17:34:33,023 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 17:34:33,023 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:33,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:33,024 INFO L85 PathProgramCache]: Analyzing trace with hash -351252067, now seen corresponding path program 1 times [2022-07-13 17:34:33,024 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:33,024 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830339634] [2022-07-13 17:34:33,024 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:33,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:33,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:33,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:33,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:33,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,316 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:33,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:34:33,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:34:33,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:34:33,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:33,342 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:33,343 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:33,344 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830339634] [2022-07-13 17:34:33,344 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830339634] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:33,344 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:33,344 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:34:33,344 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364730258] [2022-07-13 17:34:33,344 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:33,346 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:34:33,346 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:33,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:34:33,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:34:33,347 INFO L87 Difference]: Start difference. First operand 608 states and 1002 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2022-07-13 17:34:37,546 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:37,546 INFO L93 Difference]: Finished difference Result 1481 states and 2519 transitions. [2022-07-13 17:34:37,547 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:34:37,547 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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 68 [2022-07-13 17:34:37,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:37,552 INFO L225 Difference]: With dead ends: 1481 [2022-07-13 17:34:37,553 INFO L226 Difference]: Without dead ends: 889 [2022-07-13 17:34:37,555 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:34:37,556 INFO L413 NwaCegarLoop]: 874 mSDtfsCounter, 906 mSDsluCounter, 944 mSDsCounter, 0 mSdLazyCounter, 2620 mSolverCounterSat, 226 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1014 SdHoareTripleChecker+Valid, 1818 SdHoareTripleChecker+Invalid, 2846 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 226 IncrementalHoareTripleChecker+Valid, 2620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:37,556 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1014 Valid, 1818 Invalid, 2846 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [226 Valid, 2620 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-13 17:34:37,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 889 states. [2022-07-13 17:34:37,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 889 to 608. [2022-07-13 17:34:37,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 608 states, 471 states have (on average 1.664543524416136) internal successors, (784), 491 states have internal predecessors, (784), 109 states have call successors, (109), 27 states have call predecessors, (109), 27 states have return successors, (108), 103 states have call predecessors, (108), 106 states have call successors, (108) [2022-07-13 17:34:37,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 608 states to 608 states and 1001 transitions. [2022-07-13 17:34:37,599 INFO L78 Accepts]: Start accepts. Automaton has 608 states and 1001 transitions. Word has length 68 [2022-07-13 17:34:37,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:37,599 INFO L495 AbstractCegarLoop]: Abstraction has 608 states and 1001 transitions. [2022-07-13 17:34:37,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (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) [2022-07-13 17:34:37,600 INFO L276 IsEmpty]: Start isEmpty. Operand 608 states and 1001 transitions. [2022-07-13 17:34:37,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-07-13 17:34:37,602 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:37,602 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] [2022-07-13 17:34:37,602 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 17:34:37,602 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:37,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:37,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1979877755, now seen corresponding path program 1 times [2022-07-13 17:34:37,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:37,603 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [870266549] [2022-07-13 17:34:37,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:37,603 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:37,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:37,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,803 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:37,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,807 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:37,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:37,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,826 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-13 17:34:37,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2022-07-13 17:34:37,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,832 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:34:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,833 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 60 [2022-07-13 17:34:37,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:37,835 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:37,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [870266549] [2022-07-13 17:34:37,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [870266549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:37,836 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:37,836 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:34:37,836 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [725516659] [2022-07-13 17:34:37,836 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:37,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:34:37,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:37,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:34:37,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:34:37,837 INFO L87 Difference]: Start difference. First operand 608 states and 1001 transitions. Second operand has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 17:34:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:41,458 INFO L93 Difference]: Finished difference Result 1476 states and 2505 transitions. [2022-07-13 17:34:41,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-13 17:34:41,459 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 68 [2022-07-13 17:34:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:41,464 INFO L225 Difference]: With dead ends: 1476 [2022-07-13 17:34:41,464 INFO L226 Difference]: Without dead ends: 853 [2022-07-13 17:34:41,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:34:41,467 INFO L413 NwaCegarLoop]: 881 mSDtfsCounter, 1467 mSDsluCounter, 917 mSDsCounter, 0 mSdLazyCounter, 2429 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1575 SdHoareTripleChecker+Valid, 1798 SdHoareTripleChecker+Invalid, 2887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 2429 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:41,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1575 Valid, 1798 Invalid, 2887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 2429 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:34:41,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 853 states. [2022-07-13 17:34:41,504 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 853 to 584. [2022-07-13 17:34:41,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 584 states, 450 states have (on average 1.6555555555555554) internal successors, (745), 468 states have internal predecessors, (745), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:34:41,511 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 584 states to 584 states and 958 transitions. [2022-07-13 17:34:41,512 INFO L78 Accepts]: Start accepts. Automaton has 584 states and 958 transitions. Word has length 68 [2022-07-13 17:34:41,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:41,513 INFO L495 AbstractCegarLoop]: Abstraction has 584 states and 958 transitions. [2022-07-13 17:34:41,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.0) internal successors, (48), 4 states have internal predecessors, (48), 2 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2022-07-13 17:34:41,514 INFO L276 IsEmpty]: Start isEmpty. Operand 584 states and 958 transitions. [2022-07-13 17:34:41,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2022-07-13 17:34:41,515 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:41,516 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] [2022-07-13 17:34:41,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 17:34:41,516 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:41,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:41,516 INFO L85 PathProgramCache]: Analyzing trace with hash 815635743, now seen corresponding path program 1 times [2022-07-13 17:34:41,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:41,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [986449315] [2022-07-13 17:34:41,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:41,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:41,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:41,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:41,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,799 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:41,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:41,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-13 17:34:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:34:41,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-13 17:34:41,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:41,841 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:41,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:41,842 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [986449315] [2022-07-13 17:34:41,842 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [986449315] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:41,842 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:41,842 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:34:41,842 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [727637650] [2022-07-13 17:34:41,842 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:41,843 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:34:41,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:41,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:34:41,845 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:34:41,845 INFO L87 Difference]: Start difference. First operand 584 states and 958 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:46,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:46,306 INFO L93 Difference]: Finished difference Result 1439 states and 2436 transitions. [2022-07-13 17:34:46,306 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:34:46,306 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 69 [2022-07-13 17:34:46,307 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:46,311 INFO L225 Difference]: With dead ends: 1439 [2022-07-13 17:34:46,311 INFO L226 Difference]: Without dead ends: 847 [2022-07-13 17:34:46,313 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 [2022-07-13 17:34:46,314 INFO L413 NwaCegarLoop]: 864 mSDtfsCounter, 1506 mSDsluCounter, 1989 mSDsCounter, 0 mSdLazyCounter, 4906 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1614 SdHoareTripleChecker+Valid, 2853 SdHoareTripleChecker+Invalid, 5364 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 4906 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:46,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1614 Valid, 2853 Invalid, 5364 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 4906 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 17:34:46,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-13 17:34:46,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-07-13 17:34:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6486486486486487) internal successors, (732), 462 states have internal predecessors, (732), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:34:46,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 945 transitions. [2022-07-13 17:34:46,374 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 945 transitions. Word has length 69 [2022-07-13 17:34:46,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:46,374 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 945 transitions. [2022-07-13 17:34:46,375 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:46,376 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 945 transitions. [2022-07-13 17:34:46,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2022-07-13 17:34:46,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:46,377 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] [2022-07-13 17:34:46,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-13 17:34:46,377 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:46,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:46,378 INFO L85 PathProgramCache]: Analyzing trace with hash -691110395, now seen corresponding path program 1 times [2022-07-13 17:34:46,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:46,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89146145] [2022-07-13 17:34:46,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:46,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:46,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,521 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:46,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:46,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:46,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:46,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,605 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:46,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2022-07-13 17:34:46,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:34:46,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-13 17:34:46,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:46,632 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:46,632 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:46,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89146145] [2022-07-13 17:34:46,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89146145] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:46,633 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:46,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:34:46,634 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091834555] [2022-07-13 17:34:46,634 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:46,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:34:46,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:46,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:34:46,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:34:46,635 INFO L87 Difference]: Start difference. First operand 578 states and 945 transitions. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2022-07-13 17:34:50,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:50,069 INFO L93 Difference]: Finished difference Result 1409 states and 2385 transitions. [2022-07-13 17:34:50,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:34:50,070 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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 70 [2022-07-13 17:34:50,070 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:50,074 INFO L225 Difference]: With dead ends: 1409 [2022-07-13 17:34:50,074 INFO L226 Difference]: Without dead ends: 847 [2022-07-13 17:34:50,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:34:50,077 INFO L413 NwaCegarLoop]: 832 mSDtfsCounter, 1451 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 2306 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1559 SdHoareTripleChecker+Valid, 1733 SdHoareTripleChecker+Invalid, 2759 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2306 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:50,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1559 Valid, 1733 Invalid, 2759 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2306 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 17:34:50,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-13 17:34:50,109 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 578. [2022-07-13 17:34:50,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 578 states, 444 states have (on average 1.6463963963963963) internal successors, (731), 462 states have internal predecessors, (731), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:34:50,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 578 states to 578 states and 944 transitions. [2022-07-13 17:34:50,113 INFO L78 Accepts]: Start accepts. Automaton has 578 states and 944 transitions. Word has length 70 [2022-07-13 17:34:50,113 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:50,113 INFO L495 AbstractCegarLoop]: Abstraction has 578 states and 944 transitions. [2022-07-13 17:34:50,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (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) [2022-07-13 17:34:50,114 INFO L276 IsEmpty]: Start isEmpty. Operand 578 states and 944 transitions. [2022-07-13 17:34:50,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-07-13 17:34:50,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:50,115 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] [2022-07-13 17:34:50,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 17:34:50,115 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:50,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:50,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1448488452, now seen corresponding path program 1 times [2022-07-13 17:34:50,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:50,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1336822635] [2022-07-13 17:34:50,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:50,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:50,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:50,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:50,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:50,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:50,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:50,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-13 17:34:50,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2022-07-13 17:34:50,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-13 17:34:50,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:50,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:50,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:50,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1336822635] [2022-07-13 17:34:50,398 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1336822635] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:50,398 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:50,398 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:34:50,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092071202] [2022-07-13 17:34:50,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:50,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:34:50,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:50,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:34:50,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:34:50,399 INFO L87 Difference]: Start difference. First operand 578 states and 944 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:54,790 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:54,791 INFO L93 Difference]: Finished difference Result 1427 states and 2405 transitions. [2022-07-13 17:34:54,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:34:54,792 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 71 [2022-07-13 17:34:54,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:54,796 INFO L225 Difference]: With dead ends: 1427 [2022-07-13 17:34:54,796 INFO L226 Difference]: Without dead ends: 841 [2022-07-13 17:34:54,798 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:34:54,798 INFO L413 NwaCegarLoop]: 850 mSDtfsCounter, 1482 mSDsluCounter, 1997 mSDsCounter, 0 mSdLazyCounter, 4820 mSolverCounterSat, 448 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1590 SdHoareTripleChecker+Valid, 2847 SdHoareTripleChecker+Invalid, 5268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 448 IncrementalHoareTripleChecker+Valid, 4820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:54,799 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1590 Valid, 2847 Invalid, 5268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [448 Valid, 4820 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-13 17:34:54,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-13 17:34:54,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-07-13 17:34:54,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.639269406392694) internal successors, (718), 456 states have internal predecessors, (718), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:34:54,834 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 931 transitions. [2022-07-13 17:34:54,834 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 931 transitions. Word has length 71 [2022-07-13 17:34:54,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:54,834 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 931 transitions. [2022-07-13 17:34:54,834 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, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:34:54,834 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 931 transitions. [2022-07-13 17:34:54,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-07-13 17:34:54,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:54,835 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] [2022-07-13 17:34:54,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 17:34:54,836 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:54,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:54,836 INFO L85 PathProgramCache]: Analyzing trace with hash -5126265, now seen corresponding path program 1 times [2022-07-13 17:34:54,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:54,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974448333] [2022-07-13 17:34:54,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:54,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:54,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:54,947 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:55,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:55,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:55,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-13 17:34:55,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,057 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-13 17:34:55,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-13 17:34:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:55,059 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:55,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:55,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974448333] [2022-07-13 17:34:55,060 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974448333] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:55,060 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:55,060 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:34:55,060 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576940753] [2022-07-13 17:34:55,060 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:55,061 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:34:55,061 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:55,061 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:34:55,062 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:34:55,062 INFO L87 Difference]: Start difference. First operand 572 states and 931 transitions. Second operand has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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) [2022-07-13 17:34:58,471 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:34:58,472 INFO L93 Difference]: Finished difference Result 1397 states and 2356 transitions. [2022-07-13 17:34:58,472 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:34:58,472 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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 72 [2022-07-13 17:34:58,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:34:58,476 INFO L225 Difference]: With dead ends: 1397 [2022-07-13 17:34:58,476 INFO L226 Difference]: Without dead ends: 841 [2022-07-13 17:34:58,478 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:34:58,479 INFO L413 NwaCegarLoop]: 813 mSDtfsCounter, 1435 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 2272 mSolverCounterSat, 453 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1543 SdHoareTripleChecker+Valid, 1698 SdHoareTripleChecker+Invalid, 2725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 453 IncrementalHoareTripleChecker+Valid, 2272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-07-13 17:34:58,479 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1543 Valid, 1698 Invalid, 2725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [453 Valid, 2272 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-07-13 17:34:58,482 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 841 states. [2022-07-13 17:34:58,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 841 to 572. [2022-07-13 17:34:58,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6369863013698631) internal successors, (717), 456 states have internal predecessors, (717), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:34:58,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 930 transitions. [2022-07-13 17:34:58,518 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 930 transitions. Word has length 72 [2022-07-13 17:34:58,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:34:58,519 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 930 transitions. [2022-07-13 17:34:58,519 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.666666666666666) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (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) [2022-07-13 17:34:58,519 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 930 transitions. [2022-07-13 17:34:58,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 17:34:58,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:34:58,520 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] [2022-07-13 17:34:58,520 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 17:34:58,520 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:34:58,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:34:58,521 INFO L85 PathProgramCache]: Analyzing trace with hash -1976267521, now seen corresponding path program 1 times [2022-07-13 17:34:58,521 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:34:58,521 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [471921116] [2022-07-13 17:34:58,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:34:58,521 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:34:58,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:58,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,716 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:58,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:34:58,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,743 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:34:58,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:34:58,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:34:58,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:34:58,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:34:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:34:58,771 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:34:58,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:34:58,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [471921116] [2022-07-13 17:34:58,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [471921116] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:34:58,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:34:58,772 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:34:58,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287646228] [2022-07-13 17:34:58,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:34:58,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:34:58,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:34:58,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:34:58,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:34:58,773 INFO L87 Difference]: Start difference. First operand 572 states and 930 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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) [2022-07-13 17:35:02,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:02,520 INFO L93 Difference]: Finished difference Result 1418 states and 2378 transitions. [2022-07-13 17:35:02,520 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-13 17:35:02,520 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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 73 [2022-07-13 17:35:02,520 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:02,524 INFO L225 Difference]: With dead ends: 1418 [2022-07-13 17:35:02,524 INFO L226 Difference]: Without dead ends: 862 [2022-07-13 17:35:02,526 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-07-13 17:35:02,526 INFO L413 NwaCegarLoop]: 837 mSDtfsCounter, 834 mSDsluCounter, 978 mSDsCounter, 0 mSdLazyCounter, 2466 mSolverCounterSat, 224 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 942 SdHoareTripleChecker+Valid, 1815 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 224 IncrementalHoareTripleChecker+Valid, 2466 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:02,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [942 Valid, 1815 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [224 Valid, 2466 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:35:02,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 862 states. [2022-07-13 17:35:02,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 862 to 577. [2022-07-13 17:35:02,594 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 577 states, 443 states have (on average 1.6297968397291196) internal successors, (722), 461 states have internal predecessors, (722), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:35:02,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 577 states to 577 states and 935 transitions. [2022-07-13 17:35:02,596 INFO L78 Accepts]: Start accepts. Automaton has 577 states and 935 transitions. Word has length 73 [2022-07-13 17:35:02,596 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:02,596 INFO L495 AbstractCegarLoop]: Abstraction has 577 states and 935 transitions. [2022-07-13 17:35:02,597 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 4 states have internal predecessors, (53), 2 states have call successors, (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) [2022-07-13 17:35:02,597 INFO L276 IsEmpty]: Start isEmpty. Operand 577 states and 935 transitions. [2022-07-13 17:35:02,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-07-13 17:35:02,597 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:02,598 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] [2022-07-13 17:35:02,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-13 17:35:02,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:02,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:02,598 INFO L85 PathProgramCache]: Analyzing trace with hash 1518882784, now seen corresponding path program 1 times [2022-07-13 17:35:02,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:02,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557881170] [2022-07-13 17:35:02,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:02,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:02,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,715 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:02,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:02,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,781 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:02,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:02,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:35:02,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,838 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2022-07-13 17:35:02,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:35:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:02,843 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:02,843 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:02,843 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557881170] [2022-07-13 17:35:02,843 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557881170] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:02,843 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:02,843 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:35:02,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [520166952] [2022-07-13 17:35:02,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:02,844 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:35:02,844 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:02,844 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:35:02,844 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:02,845 INFO L87 Difference]: Start difference. First operand 577 states and 935 transitions. Second operand has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:07,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:07,067 INFO L93 Difference]: Finished difference Result 1420 states and 2377 transitions. [2022-07-13 17:35:07,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-13 17:35:07,068 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 73 [2022-07-13 17:35:07,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:07,071 INFO L225 Difference]: With dead ends: 1420 [2022-07-13 17:35:07,072 INFO L226 Difference]: Without dead ends: 835 [2022-07-13 17:35:07,073 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2022-07-13 17:35:07,074 INFO L413 NwaCegarLoop]: 846 mSDtfsCounter, 1439 mSDsluCounter, 2040 mSDsCounter, 0 mSdLazyCounter, 4762 mSolverCounterSat, 444 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1547 SdHoareTripleChecker+Valid, 2886 SdHoareTripleChecker+Invalid, 5206 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 444 IncrementalHoareTripleChecker+Valid, 4762 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:07,074 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1547 Valid, 2886 Invalid, 5206 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [444 Valid, 4762 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2022-07-13 17:35:07,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-13 17:35:07,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-07-13 17:35:07,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.6273148148148149) internal successors, (703), 450 states have internal predecessors, (703), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:35:07,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 916 transitions. [2022-07-13 17:35:07,113 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 916 transitions. Word has length 73 [2022-07-13 17:35:07,114 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:07,114 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 916 transitions. [2022-07-13 17:35:07,114 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.625) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:07,114 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 916 transitions. [2022-07-13 17:35:07,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 17:35:07,115 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:07,115 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] [2022-07-13 17:35:07,115 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-13 17:35:07,116 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:07,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:07,116 INFO L85 PathProgramCache]: Analyzing trace with hash 1024412364, now seen corresponding path program 1 times [2022-07-13 17:35:07,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:07,116 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624069886] [2022-07-13 17:35:07,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:07,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:07,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,251 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:07,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,350 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:07,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:07,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:35:07,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,369 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:35:07,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:35:07,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:07,372 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:07,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:07,373 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624069886] [2022-07-13 17:35:07,373 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624069886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:07,373 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:07,373 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:35:07,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [413642527] [2022-07-13 17:35:07,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:07,374 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:35:07,374 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:07,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:35:07,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:35:07,374 INFO L87 Difference]: Start difference. First operand 566 states and 916 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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) [2022-07-13 17:35:11,095 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:11,096 INFO L93 Difference]: Finished difference Result 1397 states and 2337 transitions. [2022-07-13 17:35:11,096 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-13 17:35:11,096 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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 74 [2022-07-13 17:35:11,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:11,100 INFO L225 Difference]: With dead ends: 1397 [2022-07-13 17:35:11,100 INFO L226 Difference]: Without dead ends: 847 [2022-07-13 17:35:11,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:11,103 INFO L413 NwaCegarLoop]: 812 mSDtfsCounter, 804 mSDsluCounter, 962 mSDsCounter, 0 mSdLazyCounter, 2432 mSolverCounterSat, 222 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 912 SdHoareTripleChecker+Valid, 1774 SdHoareTripleChecker+Invalid, 2654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 222 IncrementalHoareTripleChecker+Valid, 2432 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:11,104 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [912 Valid, 1774 Invalid, 2654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [222 Valid, 2432 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:35:11,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 847 states. [2022-07-13 17:35:11,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 847 to 572. [2022-07-13 17:35:11,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 572 states, 438 states have (on average 1.6187214611872147) internal successors, (709), 456 states have internal predecessors, (709), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:35:11,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 572 states to 572 states and 922 transitions. [2022-07-13 17:35:11,159 INFO L78 Accepts]: Start accepts. Automaton has 572 states and 922 transitions. Word has length 74 [2022-07-13 17:35:11,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:11,159 INFO L495 AbstractCegarLoop]: Abstraction has 572 states and 922 transitions. [2022-07-13 17:35:11,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 4 states have internal predecessors, (54), 2 states have call successors, (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) [2022-07-13 17:35:11,160 INFO L276 IsEmpty]: Start isEmpty. Operand 572 states and 922 transitions. [2022-07-13 17:35:11,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-07-13 17:35:11,160 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:11,160 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] [2022-07-13 17:35:11,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-13 17:35:11,161 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:11,161 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:11,161 INFO L85 PathProgramCache]: Analyzing trace with hash -820954802, now seen corresponding path program 1 times [2022-07-13 17:35:11,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:11,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050695028] [2022-07-13 17:35:11,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:11,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:11,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:11,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,360 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:11,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:11,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2022-07-13 17:35:11,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,393 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-13 17:35:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-13 17:35:11,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:11,397 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:11,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:11,397 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050695028] [2022-07-13 17:35:11,397 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050695028] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:11,397 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:11,397 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-13 17:35:11,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61417995] [2022-07-13 17:35:11,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:11,398 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-13 17:35:11,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:11,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-13 17:35:11,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:11,399 INFO L87 Difference]: Start difference. First operand 572 states and 922 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:15,976 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:15,976 INFO L93 Difference]: Finished difference Result 1400 states and 2338 transitions. [2022-07-13 17:35:15,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-13 17:35:15,976 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2022-07-13 17:35:15,977 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:15,980 INFO L225 Difference]: With dead ends: 1400 [2022-07-13 17:35:15,980 INFO L226 Difference]: Without dead ends: 835 [2022-07-13 17:35:15,982 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=43, Invalid=139, Unknown=0, NotChecked=0, Total=182 [2022-07-13 17:35:15,982 INFO L413 NwaCegarLoop]: 801 mSDtfsCounter, 822 mSDsluCounter, 2001 mSDsCounter, 0 mSdLazyCounter, 4805 mSolverCounterSat, 225 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 930 SdHoareTripleChecker+Valid, 2802 SdHoareTripleChecker+Invalid, 5030 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 225 IncrementalHoareTripleChecker+Valid, 4805 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:15,983 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [930 Valid, 2802 Invalid, 5030 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [225 Valid, 4805 Invalid, 0 Unknown, 0 Unchecked, 4.0s Time] [2022-07-13 17:35:15,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 835 states. [2022-07-13 17:35:16,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 835 to 566. [2022-07-13 17:35:16,021 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 566 states, 432 states have (on average 1.625) internal successors, (702), 450 states have internal predecessors, (702), 108 states have call successors, (108), 27 states have call predecessors, (108), 25 states have return successors, (105), 102 states have call predecessors, (105), 105 states have call successors, (105) [2022-07-13 17:35:16,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 566 states to 566 states and 915 transitions. [2022-07-13 17:35:16,023 INFO L78 Accepts]: Start accepts. Automaton has 566 states and 915 transitions. Word has length 74 [2022-07-13 17:35:16,023 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:16,023 INFO L495 AbstractCegarLoop]: Abstraction has 566 states and 915 transitions. [2022-07-13 17:35:16,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 6 states have internal predecessors, (54), 3 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:16,023 INFO L276 IsEmpty]: Start isEmpty. Operand 566 states and 915 transitions. [2022-07-13 17:35:16,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 17:35:16,025 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:16,025 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] [2022-07-13 17:35:16,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 17:35:16,025 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:16,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:16,026 INFO L85 PathProgramCache]: Analyzing trace with hash -931862683, now seen corresponding path program 1 times [2022-07-13 17:35:16,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:16,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132570549] [2022-07-13 17:35:16,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:16,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:16,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:16,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:16,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:16,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:16,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:16,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:16,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:16,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:35:16,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:16,297 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:16,297 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:16,297 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1132570549] [2022-07-13 17:35:16,297 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1132570549] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:16,297 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:16,297 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:35:16,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [841841716] [2022-07-13 17:35:16,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:16,298 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:35:16,298 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:16,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:35:16,298 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:35:16,299 INFO L87 Difference]: Start difference. First operand 566 states and 915 transitions. Second operand has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 17:35:23,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:23,828 INFO L93 Difference]: Finished difference Result 2158 states and 3662 transitions. [2022-07-13 17:35:23,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-13 17:35:23,829 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2022-07-13 17:35:23,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:23,836 INFO L225 Difference]: With dead ends: 2158 [2022-07-13 17:35:23,836 INFO L226 Difference]: Without dead ends: 1610 [2022-07-13 17:35:23,849 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:35:23,849 INFO L413 NwaCegarLoop]: 879 mSDtfsCounter, 3215 mSDsluCounter, 1601 mSDsCounter, 0 mSdLazyCounter, 5419 mSolverCounterSat, 1200 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3353 SdHoareTripleChecker+Valid, 2480 SdHoareTripleChecker+Invalid, 6619 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1200 IncrementalHoareTripleChecker+Valid, 5419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:23,850 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3353 Valid, 2480 Invalid, 6619 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1200 Valid, 5419 Invalid, 0 Unknown, 0 Unchecked, 6.5s Time] [2022-07-13 17:35:23,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1610 states. [2022-07-13 17:35:23,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1610 to 1224. [2022-07-13 17:35:23,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1224 states, 896 states have (on average 1.578125) internal successors, (1414), 950 states have internal predecessors, (1414), 273 states have call successors, (273), 51 states have call predecessors, (273), 54 states have return successors, (347), 265 states have call predecessors, (347), 269 states have call successors, (347) [2022-07-13 17:35:23,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1224 states to 1224 states and 2034 transitions. [2022-07-13 17:35:23,961 INFO L78 Accepts]: Start accepts. Automaton has 1224 states and 2034 transitions. Word has length 75 [2022-07-13 17:35:23,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:23,962 INFO L495 AbstractCegarLoop]: Abstraction has 1224 states and 2034 transitions. [2022-07-13 17:35:23,963 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.875) internal successors, (55), 5 states have internal predecessors, (55), 4 states have call successors, (10), 5 states have call predecessors, (10), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2022-07-13 17:35:23,963 INFO L276 IsEmpty]: Start isEmpty. Operand 1224 states and 2034 transitions. [2022-07-13 17:35:23,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2022-07-13 17:35:23,963 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:23,964 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] [2022-07-13 17:35:23,964 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 17:35:23,964 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:23,964 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:23,964 INFO L85 PathProgramCache]: Analyzing trace with hash 461032549, now seen corresponding path program 1 times [2022-07-13 17:35:23,964 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:23,964 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1235821437] [2022-07-13 17:35:23,965 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:23,965 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:23,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,107 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:24,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,180 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:24,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:24,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,192 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:24,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:24,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-13 17:35:24,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,210 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:35:24,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:24,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1235821437] [2022-07-13 17:35:24,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1235821437] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:35:24,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878986557] [2022-07-13 17:35:24,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:24,211 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:35:24,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:35:24,213 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:35:24,214 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 17:35:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:24,426 INFO L263 TraceCheckSpWp]: Trace formula consists of 1497 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:35:24,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:35:24,462 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:35:24,462 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:35:24,462 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878986557] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:24,463 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:35:24,463 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:35:24,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [166576028] [2022-07-13 17:35:24,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:24,463 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:35:24,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:24,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:35:24,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:24,464 INFO L87 Difference]: Start difference. First operand 1224 states and 2034 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:24,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:24,686 INFO L93 Difference]: Finished difference Result 3544 states and 5964 transitions. [2022-07-13 17:35:24,686 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:35:24,686 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 75 [2022-07-13 17:35:24,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:24,698 INFO L225 Difference]: With dead ends: 3544 [2022-07-13 17:35:24,698 INFO L226 Difference]: Without dead ends: 2338 [2022-07-13 17:35:24,704 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 89 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:24,705 INFO L413 NwaCegarLoop]: 1059 mSDtfsCounter, 879 mSDsluCounter, 811 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 879 SdHoareTripleChecker+Valid, 1870 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:24,705 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [879 Valid, 1870 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:35:24,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2338 states. [2022-07-13 17:35:24,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2338 to 2277. [2022-07-13 17:35:24,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2277 states, 1670 states have (on average 1.592814371257485) internal successors, (2660), 1778 states have internal predecessors, (2660), 503 states have call successors, (503), 92 states have call predecessors, (503), 103 states have return successors, (664), 492 states have call predecessors, (664), 499 states have call successors, (664) [2022-07-13 17:35:24,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2277 states to 2277 states and 3827 transitions. [2022-07-13 17:35:24,926 INFO L78 Accepts]: Start accepts. Automaton has 2277 states and 3827 transitions. Word has length 75 [2022-07-13 17:35:24,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:24,926 INFO L495 AbstractCegarLoop]: Abstraction has 2277 states and 3827 transitions. [2022-07-13 17:35:24,926 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:24,926 INFO L276 IsEmpty]: Start isEmpty. Operand 2277 states and 3827 transitions. [2022-07-13 17:35:24,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-07-13 17:35:24,927 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:24,927 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:35:24,946 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 17:35:25,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 17:35:25,144 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:25,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:25,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1788067737, now seen corresponding path program 1 times [2022-07-13 17:35:25,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:25,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [704132358] [2022-07-13 17:35:25,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:25,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:25,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:25,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,398 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:25,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:25,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,410 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:25,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:25,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:25,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:25,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 68 [2022-07-13 17:35:25,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,425 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-13 17:35:25,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:25,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [704132358] [2022-07-13 17:35:25,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [704132358] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:35:25,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2117387731] [2022-07-13 17:35:25,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:25,426 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:35:25,426 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:35:25,427 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 17:35:25,428 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 17:35:25,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:25,646 INFO L263 TraceCheckSpWp]: Trace formula consists of 1498 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 17:35:25,649 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:35:25,694 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 17:35:25,694 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:35:25,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2117387731] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:25,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:35:25,695 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [8] total 9 [2022-07-13 17:35:25,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [335922516] [2022-07-13 17:35:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:25,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 17:35:25,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:25,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 17:35:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:25,696 INFO L87 Difference]: Start difference. First operand 2277 states and 3827 transitions. Second operand has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:25,986 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:25,986 INFO L93 Difference]: Finished difference Result 5185 states and 8787 transitions. [2022-07-13 17:35:25,987 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 17:35:25,987 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) Word has length 76 [2022-07-13 17:35:25,987 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:25,999 INFO L225 Difference]: With dead ends: 5185 [2022-07-13 17:35:26,000 INFO L226 Difference]: Without dead ends: 2926 [2022-07-13 17:35:26,008 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 97 GetRequests, 90 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:26,008 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 877 mSDsluCounter, 808 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 877 SdHoareTripleChecker+Valid, 1806 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:26,009 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [877 Valid, 1806 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-13 17:35:26,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2022-07-13 17:35:26,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2718. [2022-07-13 17:35:26,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2718 states, 2013 states have (on average 1.6055638350720318) internal successors, (3232), 2138 states have internal predecessors, (3232), 581 states have call successors, (581), 111 states have call predecessors, (581), 123 states have return successors, (746), 568 states have call predecessors, (746), 577 states have call successors, (746) [2022-07-13 17:35:26,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2718 states to 2718 states and 4559 transitions. [2022-07-13 17:35:26,287 INFO L78 Accepts]: Start accepts. Automaton has 2718 states and 4559 transitions. Word has length 76 [2022-07-13 17:35:26,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:26,287 INFO L495 AbstractCegarLoop]: Abstraction has 2718 states and 4559 transitions. [2022-07-13 17:35:26,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.333333333333332) internal successors, (58), 3 states have internal predecessors, (58), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 3 states have call successors, (8) [2022-07-13 17:35:26,287 INFO L276 IsEmpty]: Start isEmpty. Operand 2718 states and 4559 transitions. [2022-07-13 17:35:26,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2022-07-13 17:35:26,288 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:26,288 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:35:26,306 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-13 17:35:26,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-07-13 17:35:26,493 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:26,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:26,494 INFO L85 PathProgramCache]: Analyzing trace with hash -13813102, now seen corresponding path program 1 times [2022-07-13 17:35:26,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:26,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1387885274] [2022-07-13 17:35:26,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:26,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:26,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:26,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:26,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:26,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:26,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,761 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:26,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:26,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:26,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:26,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,777 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-13 17:35:26,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:26,779 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:26,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:26,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1387885274] [2022-07-13 17:35:26,779 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1387885274] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:26,779 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:26,779 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:35:26,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488113029] [2022-07-13 17:35:26,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:26,780 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:35:26,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:26,780 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:35:26,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:35:26,780 INFO L87 Difference]: Start difference. First operand 2718 states and 4559 transitions. Second operand has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 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) [2022-07-13 17:35:36,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:36,154 INFO L93 Difference]: Finished difference Result 10012 states and 17830 transitions. [2022-07-13 17:35:36,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:35:36,154 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 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 78 [2022-07-13 17:35:36,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:36,215 INFO L225 Difference]: With dead ends: 10012 [2022-07-13 17:35:36,223 INFO L226 Difference]: Without dead ends: 7312 [2022-07-13 17:35:36,235 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:35:36,236 INFO L413 NwaCegarLoop]: 987 mSDtfsCounter, 3628 mSDsluCounter, 1946 mSDsCounter, 0 mSdLazyCounter, 5660 mSolverCounterSat, 1272 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3771 SdHoareTripleChecker+Valid, 2933 SdHoareTripleChecker+Invalid, 6932 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1272 IncrementalHoareTripleChecker+Valid, 5660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.5s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:36,236 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3771 Valid, 2933 Invalid, 6932 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1272 Valid, 5660 Invalid, 0 Unknown, 0 Unchecked, 7.5s Time] [2022-07-13 17:35:36,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7312 states. [2022-07-13 17:35:36,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7312 to 6047. [2022-07-13 17:35:36,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6047 states, 4351 states have (on average 1.5835440128706044) internal successors, (6890), 4696 states have internal predecessors, (6890), 1402 states have call successors, (1402), 216 states have call predecessors, (1402), 293 states have return successors, (2343), 1400 states have call predecessors, (2343), 1396 states have call successors, (2343) [2022-07-13 17:35:36,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6047 states to 6047 states and 10635 transitions. [2022-07-13 17:35:36,972 INFO L78 Accepts]: Start accepts. Automaton has 6047 states and 10635 transitions. Word has length 78 [2022-07-13 17:35:36,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:36,973 INFO L495 AbstractCegarLoop]: Abstraction has 6047 states and 10635 transitions. [2022-07-13 17:35:36,973 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.0) internal successors, (56), 5 states have internal predecessors, (56), 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) [2022-07-13 17:35:36,973 INFO L276 IsEmpty]: Start isEmpty. Operand 6047 states and 10635 transitions. [2022-07-13 17:35:36,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-07-13 17:35:36,974 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:36,974 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:35:36,974 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-13 17:35:36,974 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:36,974 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:36,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1593721713, now seen corresponding path program 1 times [2022-07-13 17:35:36,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:36,975 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172966505] [2022-07-13 17:35:36,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:36,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:37,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:37,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,205 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:37,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,210 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:37,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:37,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:37,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:37,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,220 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:37,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:37,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-13 17:35:37,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:37,234 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2022-07-13 17:35:37,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:37,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172966505] [2022-07-13 17:35:37,235 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172966505] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:37,235 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:37,235 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:35:37,235 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591916231] [2022-07-13 17:35:37,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:37,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:35:37,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:37,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:35:37,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:35:37,236 INFO L87 Difference]: Start difference. First operand 6047 states and 10635 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2022-07-13 17:35:41,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:41,432 INFO L93 Difference]: Finished difference Result 13049 states and 23272 transitions. [2022-07-13 17:35:41,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:35:41,433 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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 79 [2022-07-13 17:35:41,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:41,464 INFO L225 Difference]: With dead ends: 13049 [2022-07-13 17:35:41,464 INFO L226 Difference]: Without dead ends: 7020 [2022-07-13 17:35:41,485 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:35:41,487 INFO L413 NwaCegarLoop]: 889 mSDtfsCounter, 1346 mSDsluCounter, 1034 mSDsCounter, 0 mSdLazyCounter, 2286 mSolverCounterSat, 409 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1454 SdHoareTripleChecker+Valid, 1923 SdHoareTripleChecker+Invalid, 2695 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 409 IncrementalHoareTripleChecker+Valid, 2286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:41,487 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1454 Valid, 1923 Invalid, 2695 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [409 Valid, 2286 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 17:35:41,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7020 states. [2022-07-13 17:35:42,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7020 to 6055. [2022-07-13 17:35:42,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6055 states, 4357 states have (on average 1.5822813862749598) internal successors, (6894), 4702 states have internal predecessors, (6894), 1402 states have call successors, (1402), 220 states have call predecessors, (1402), 295 states have return successors, (2333), 1398 states have call predecessors, (2333), 1396 states have call successors, (2333) [2022-07-13 17:35:42,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6055 states to 6055 states and 10629 transitions. [2022-07-13 17:35:42,225 INFO L78 Accepts]: Start accepts. Automaton has 6055 states and 10629 transitions. Word has length 79 [2022-07-13 17:35:42,225 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:42,225 INFO L495 AbstractCegarLoop]: Abstraction has 6055 states and 10629 transitions. [2022-07-13 17:35:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 4 states have internal predecessors, (57), 2 states have call successors, (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) [2022-07-13 17:35:42,226 INFO L276 IsEmpty]: Start isEmpty. Operand 6055 states and 10629 transitions. [2022-07-13 17:35:42,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-07-13 17:35:42,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:42,227 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:35:42,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-13 17:35:42,227 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:42,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:42,228 INFO L85 PathProgramCache]: Analyzing trace with hash -650455551, now seen corresponding path program 1 times [2022-07-13 17:35:42,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:42,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2042571138] [2022-07-13 17:35:42,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:42,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:42,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:42,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:42,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:42,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:42,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:42,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:42,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:42,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:35:42,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,468 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-13 17:35:42,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:42,470 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-07-13 17:35:42,470 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:42,470 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2042571138] [2022-07-13 17:35:42,470 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2042571138] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:42,471 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:42,471 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:35:42,471 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956084362] [2022-07-13 17:35:42,471 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:42,471 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:35:42,471 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:42,472 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:35:42,472 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:35:42,472 INFO L87 Difference]: Start difference. First operand 6055 states and 10629 transitions. Second operand has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-13 17:35:52,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:52,413 INFO L93 Difference]: Finished difference Result 20704 states and 38900 transitions. [2022-07-13 17:35:52,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:35:52,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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 87 [2022-07-13 17:35:52,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:52,481 INFO L225 Difference]: With dead ends: 20704 [2022-07-13 17:35:52,481 INFO L226 Difference]: Without dead ends: 14667 [2022-07-13 17:35:52,507 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 [2022-07-13 17:35:52,508 INFO L413 NwaCegarLoop]: 998 mSDtfsCounter, 3601 mSDsluCounter, 2027 mSDsCounter, 0 mSdLazyCounter, 5588 mSolverCounterSat, 1256 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3743 SdHoareTripleChecker+Valid, 3025 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1256 IncrementalHoareTripleChecker+Valid, 5588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:52,508 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3743 Valid, 3025 Invalid, 6844 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1256 Valid, 5588 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-13 17:35:52,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14667 states. [2022-07-13 17:35:53,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14667 to 12004. [2022-07-13 17:35:54,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12004 states, 8635 states have (on average 1.5792704111175448) internal successors, (13637), 9320 states have internal predecessors, (13637), 2779 states have call successors, (2779), 434 states have call predecessors, (2779), 589 states have return successors, (5226), 2781 states have call predecessors, (5226), 2769 states have call successors, (5226) [2022-07-13 17:35:54,066 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12004 states to 12004 states and 21642 transitions. [2022-07-13 17:35:54,068 INFO L78 Accepts]: Start accepts. Automaton has 12004 states and 21642 transitions. Word has length 87 [2022-07-13 17:35:54,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:35:54,069 INFO L495 AbstractCegarLoop]: Abstraction has 12004 states and 21642 transitions. [2022-07-13 17:35:54,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.75) internal successors, (62), 5 states have internal predecessors, (62), 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) [2022-07-13 17:35:54,069 INFO L276 IsEmpty]: Start isEmpty. Operand 12004 states and 21642 transitions. [2022-07-13 17:35:54,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-07-13 17:35:54,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:35:54,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:35:54,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-13 17:35:54,071 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:35:54,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:35:54,071 INFO L85 PathProgramCache]: Analyzing trace with hash -1775026134, now seen corresponding path program 1 times [2022-07-13 17:35:54,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:35:54,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530533155] [2022-07-13 17:35:54,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:35:54,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:35:54,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,196 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:54,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:54,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:35:54,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:35:54,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:35:54,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,279 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:35:54,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:35:54,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:35:54,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:35:54,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-13 17:35:54,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:35:54,299 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-07-13 17:35:54,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:35:54,299 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530533155] [2022-07-13 17:35:54,299 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530533155] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:35:54,299 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:35:54,299 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:35:54,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393203440] [2022-07-13 17:35:54,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:35:54,300 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:35:54,300 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:35:54,300 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:35:54,300 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:35:54,301 INFO L87 Difference]: Start difference. First operand 12004 states and 21642 transitions. Second operand has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-07-13 17:35:59,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:35:59,720 INFO L93 Difference]: Finished difference Result 25897 states and 47846 transitions. [2022-07-13 17:35:59,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:35:59,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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 88 [2022-07-13 17:35:59,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:35:59,792 INFO L225 Difference]: With dead ends: 25897 [2022-07-13 17:35:59,792 INFO L226 Difference]: Without dead ends: 13911 [2022-07-13 17:35:59,843 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 [2022-07-13 17:35:59,843 INFO L413 NwaCegarLoop]: 884 mSDtfsCounter, 808 mSDsluCounter, 1073 mSDsCounter, 0 mSdLazyCounter, 2419 mSolverCounterSat, 210 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 918 SdHoareTripleChecker+Valid, 1957 SdHoareTripleChecker+Invalid, 2629 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 210 IncrementalHoareTripleChecker+Valid, 2419 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-07-13 17:35:59,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [918 Valid, 1957 Invalid, 2629 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [210 Valid, 2419 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-07-13 17:35:59,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13911 states. [2022-07-13 17:36:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13911 to 12044. [2022-07-13 17:36:01,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12044 states, 8671 states have (on average 1.5773267212547573) internal successors, (13677), 9348 states have internal predecessors, (13677), 2779 states have call successors, (2779), 450 states have call predecessors, (2779), 593 states have return successors, (5212), 2777 states have call predecessors, (5212), 2769 states have call successors, (5212) [2022-07-13 17:36:01,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12044 states to 12044 states and 21668 transitions. [2022-07-13 17:36:01,527 INFO L78 Accepts]: Start accepts. Automaton has 12044 states and 21668 transitions. Word has length 88 [2022-07-13 17:36:01,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:01,528 INFO L495 AbstractCegarLoop]: Abstraction has 12044 states and 21668 transitions. [2022-07-13 17:36:01,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.666666666666666) internal successors, (64), 4 states have internal predecessors, (64), 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) [2022-07-13 17:36:01,528 INFO L276 IsEmpty]: Start isEmpty. Operand 12044 states and 21668 transitions. [2022-07-13 17:36:01,530 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-07-13 17:36:01,530 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:01,530 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:01,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-13 17:36:01,530 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:01,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:01,531 INFO L85 PathProgramCache]: Analyzing trace with hash 1227574607, now seen corresponding path program 1 times [2022-07-13 17:36:01,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:01,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292150711] [2022-07-13 17:36:01,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:01,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:01,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:01,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,762 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:01,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:01,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:01,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,778 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:01,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:01,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:36:01,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,783 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:36:01,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:36:01,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,785 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:36:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,794 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2022-07-13 17:36:01,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-13 17:36:01,797 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:01,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292150711] [2022-07-13 17:36:01,797 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292150711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:01,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:01,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:36:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409354627] [2022-07-13 17:36:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:01,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:36:01,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:01,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:36:01,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:36:01,800 INFO L87 Difference]: Start difference. First operand 12044 states and 21668 transitions. Second operand has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-13 17:36:14,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:14,493 INFO L93 Difference]: Finished difference Result 41376 states and 83780 transitions. [2022-07-13 17:36:14,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:36:14,494 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) Word has length 97 [2022-07-13 17:36:14,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:14,710 INFO L225 Difference]: With dead ends: 41376 [2022-07-13 17:36:14,711 INFO L226 Difference]: Without dead ends: 29350 [2022-07-13 17:36:14,794 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:36:14,794 INFO L413 NwaCegarLoop]: 1003 mSDtfsCounter, 2467 mSDsluCounter, 2057 mSDsCounter, 0 mSdLazyCounter, 5934 mSolverCounterSat, 833 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2609 SdHoareTripleChecker+Valid, 3060 SdHoareTripleChecker+Invalid, 6767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 833 IncrementalHoareTripleChecker+Valid, 5934 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.8s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:14,795 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2609 Valid, 3060 Invalid, 6767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [833 Valid, 5934 Invalid, 0 Unknown, 0 Unchecked, 7.8s Time] [2022-07-13 17:36:14,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29350 states. [2022-07-13 17:36:17,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29350 to 24023. [2022-07-13 17:36:17,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24023 states, 17295 states have (on average 1.5746747614917607) internal successors, (27234), 18644 states have internal predecessors, (27234), 5538 states have call successors, (5538), 894 states have call predecessors, (5538), 1189 states have return successors, (12117), 5548 states have call predecessors, (12117), 5520 states have call successors, (12117) [2022-07-13 17:36:18,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24023 states to 24023 states and 44889 transitions. [2022-07-13 17:36:18,157 INFO L78 Accepts]: Start accepts. Automaton has 24023 states and 44889 transitions. Word has length 97 [2022-07-13 17:36:18,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:18,158 INFO L495 AbstractCegarLoop]: Abstraction has 24023 states and 44889 transitions. [2022-07-13 17:36:18,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.375) internal successors, (67), 5 states have internal predecessors, (67), 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) [2022-07-13 17:36:18,158 INFO L276 IsEmpty]: Start isEmpty. Operand 24023 states and 44889 transitions. [2022-07-13 17:36:18,159 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-13 17:36:18,159 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:18,160 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:18,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2022-07-13 17:36:18,160 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:18,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:18,160 INFO L85 PathProgramCache]: Analyzing trace with hash -203367196, now seen corresponding path program 1 times [2022-07-13 17:36:18,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:18,161 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [522300077] [2022-07-13 17:36:18,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:18,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:18,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:18,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:18,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:18,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:18,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:18,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,333 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:18,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:36:18,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:36:18,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:36:18,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:36:18,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-13 17:36:18,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:18,506 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-07-13 17:36:18,506 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:18,506 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [522300077] [2022-07-13 17:36:18,506 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [522300077] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:18,506 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:18,506 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:36:18,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1475036939] [2022-07-13 17:36:18,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:18,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:36:18,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:18,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:36:18,507 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:36:18,507 INFO L87 Difference]: Start difference. First operand 24023 states and 44889 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:26,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:26,011 INFO L93 Difference]: Finished difference Result 51819 states and 101298 transitions. [2022-07-13 17:36:26,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-13 17:36:26,011 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 98 [2022-07-13 17:36:26,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:26,184 INFO L225 Difference]: With dead ends: 51819 [2022-07-13 17:36:26,184 INFO L226 Difference]: Without dead ends: 27814 [2022-07-13 17:36:26,310 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=28, Invalid=44, Unknown=0, NotChecked=0, Total=72 [2022-07-13 17:36:26,310 INFO L413 NwaCegarLoop]: 880 mSDtfsCounter, 1367 mSDsluCounter, 1021 mSDsCounter, 0 mSdLazyCounter, 2288 mSolverCounterSat, 415 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1476 SdHoareTripleChecker+Valid, 1901 SdHoareTripleChecker+Invalid, 2703 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 415 IncrementalHoareTripleChecker+Valid, 2288 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:26,310 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1476 Valid, 1901 Invalid, 2703 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [415 Valid, 2288 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-07-13 17:36:26,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27814 states. [2022-07-13 17:36:29,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27814 to 24103. [2022-07-13 17:36:29,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24103 states, 17367 states have (on average 1.5727529222087868) internal successors, (27314), 18716 states have internal predecessors, (27314), 5538 states have call successors, (5538), 910 states have call predecessors, (5538), 1197 states have return successors, (12101), 5540 states have call predecessors, (12101), 5520 states have call successors, (12101) [2022-07-13 17:36:29,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24103 states to 24103 states and 44953 transitions. [2022-07-13 17:36:29,706 INFO L78 Accepts]: Start accepts. Automaton has 24103 states and 44953 transitions. Word has length 98 [2022-07-13 17:36:29,706 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:29,706 INFO L495 AbstractCegarLoop]: Abstraction has 24103 states and 44953 transitions. [2022-07-13 17:36:29,706 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 4 states have internal predecessors, (70), 2 states have call successors, (13), 4 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2022-07-13 17:36:29,706 INFO L276 IsEmpty]: Start isEmpty. Operand 24103 states and 44953 transitions. [2022-07-13 17:36:29,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-07-13 17:36:29,708 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:29,708 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:36:29,709 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2022-07-13 17:36:29,709 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:29,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:29,709 INFO L85 PathProgramCache]: Analyzing trace with hash 770009700, now seen corresponding path program 1 times [2022-07-13 17:36:29,709 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:29,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499381987] [2022-07-13 17:36:29,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:29,710 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:29,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:29,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:29,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:29,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:36:29,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:36:29,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,932 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:36:29,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:36:29,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:36:29,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:36:29,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,942 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2022-07-13 17:36:29,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:29,945 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-13 17:36:29,945 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:29,945 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [499381987] [2022-07-13 17:36:29,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [499381987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:29,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:36:29,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-13 17:36:29,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [955092406] [2022-07-13 17:36:29,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:29,946 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:36:29,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:29,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:36:29,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-13 17:36:29,947 INFO L87 Difference]: Start difference. First operand 24103 states and 44953 transitions. Second operand has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:36:46,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:36:46,869 INFO L93 Difference]: Finished difference Result 82076 states and 183786 transitions. [2022-07-13 17:36:46,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-13 17:36:46,887 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) Word has length 108 [2022-07-13 17:36:46,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:36:47,437 INFO L225 Difference]: With dead ends: 82076 [2022-07-13 17:36:47,437 INFO L226 Difference]: Without dead ends: 57991 [2022-07-13 17:36:47,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=80, Invalid=226, Unknown=0, NotChecked=0, Total=306 [2022-07-13 17:36:47,753 INFO L413 NwaCegarLoop]: 1055 mSDtfsCounter, 3504 mSDsluCounter, 2197 mSDsCounter, 0 mSdLazyCounter, 5697 mSolverCounterSat, 1211 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3645 SdHoareTripleChecker+Valid, 3252 SdHoareTripleChecker+Invalid, 6908 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1211 IncrementalHoareTripleChecker+Valid, 5697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:36:47,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3645 Valid, 3252 Invalid, 6908 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1211 Valid, 5697 Invalid, 0 Unknown, 0 Unchecked, 7.2s Time] [2022-07-13 17:36:47,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57991 states. [2022-07-13 17:36:54,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57991 to 48198. [2022-07-13 17:36:54,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48198 states, 34731 states have (on average 1.5702110506463967) internal successors, (54535), 37424 states have internal predecessors, (54535), 11061 states have call successors, (11061), 1814 states have call predecessors, (11061), 2405 states have return successors, (29854), 11087 states have call predecessors, (29854), 11027 states have call successors, (29854) [2022-07-13 17:36:55,263 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48198 states to 48198 states and 95450 transitions. [2022-07-13 17:36:55,270 INFO L78 Accepts]: Start accepts. Automaton has 48198 states and 95450 transitions. Word has length 108 [2022-07-13 17:36:55,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:36:55,270 INFO L495 AbstractCegarLoop]: Abstraction has 48198 states and 95450 transitions. [2022-07-13 17:36:55,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.0) internal successors, (72), 5 states have internal predecessors, (72), 3 states have call successors, (14), 5 states have call predecessors, (14), 3 states have return successors, (12), 4 states have call predecessors, (12), 3 states have call successors, (12) [2022-07-13 17:36:55,270 INFO L276 IsEmpty]: Start isEmpty. Operand 48198 states and 95450 transitions. [2022-07-13 17:36:55,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2022-07-13 17:36:55,273 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:36:55,273 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 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, 1] [2022-07-13 17:36:55,273 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2022-07-13 17:36:55,273 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:36:55,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:36:55,273 INFO L85 PathProgramCache]: Analyzing trace with hash -1773649778, now seen corresponding path program 1 times [2022-07-13 17:36:55,274 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:36:55,274 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1206966784] [2022-07-13 17:36:55,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:36:55,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:55,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:36:55,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:36:55,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-13 17:36:55,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,653 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:36:55,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2022-07-13 17:36:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,663 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-13 17:36:55,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,664 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-13 17:36:55,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-13 17:36:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,666 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 93 [2022-07-13 17:36:55,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,667 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-13 17:36:55,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,668 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-13 17:36:55,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 129 [2022-07-13 17:36:55,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,670 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 12 proven. 4 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2022-07-13 17:36:55,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:36:55,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1206966784] [2022-07-13 17:36:55,671 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1206966784] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 17:36:55,671 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [392743987] [2022-07-13 17:36:55,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:36:55,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:36:55,671 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 17:36:55,673 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) [2022-07-13 17:36:55,673 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 17:36:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:36:55,902 INFO L263 TraceCheckSpWp]: Trace formula consists of 1853 conjuncts, 8 conjunts are in the unsatisfiable core [2022-07-13 17:36:55,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 17:36:56,088 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2022-07-13 17:36:56,089 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 17:36:56,089 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [392743987] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:36:56,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 17:36:56,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [11] total 17 [2022-07-13 17:36:56,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212721776] [2022-07-13 17:36:56,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:36:56,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-13 17:36:56,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:36:56,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-13 17:36:56,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2022-07-13 17:36:56,091 INFO L87 Difference]: Start difference. First operand 48198 states and 95450 transitions. Second operand has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-13 17:37:13,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 17:37:13,202 INFO L93 Difference]: Finished difference Result 141876 states and 295825 transitions. [2022-07-13 17:37:13,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-13 17:37:13,204 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 137 [2022-07-13 17:37:13,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 17:37:14,275 INFO L225 Difference]: With dead ends: 141876 [2022-07-13 17:37:14,276 INFO L226 Difference]: Without dead ends: 93696 [2022-07-13 17:37:14,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 158 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=99, Invalid=501, Unknown=0, NotChecked=0, Total=600 [2022-07-13 17:37:14,715 INFO L413 NwaCegarLoop]: 1719 mSDtfsCounter, 2714 mSDsluCounter, 1957 mSDsCounter, 0 mSdLazyCounter, 7184 mSolverCounterSat, 718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2884 SdHoareTripleChecker+Valid, 3676 SdHoareTripleChecker+Invalid, 7902 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 718 IncrementalHoareTripleChecker+Valid, 7184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-07-13 17:37:14,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2884 Valid, 3676 Invalid, 7902 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [718 Valid, 7184 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-07-13 17:37:14,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93696 states. [2022-07-13 17:37:27,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93696 to 88084. [2022-07-13 17:37:27,260 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88084 states, 64096 states have (on average 1.5722978032950574) internal successors, (100778), 68698 states have internal predecessors, (100778), 19342 states have call successors, (19342), 3334 states have call predecessors, (19342), 4645 states have return successors, (58820), 19699 states have call predecessors, (58820), 19292 states have call successors, (58820) [2022-07-13 17:37:28,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88084 states to 88084 states and 178940 transitions. [2022-07-13 17:37:28,587 INFO L78 Accepts]: Start accepts. Automaton has 88084 states and 178940 transitions. Word has length 137 [2022-07-13 17:37:28,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 17:37:28,588 INFO L495 AbstractCegarLoop]: Abstraction has 88084 states and 178940 transitions. [2022-07-13 17:37:28,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.75) internal successors, (94), 7 states have internal predecessors, (94), 4 states have call successors, (17), 4 states have call predecessors, (17), 5 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-07-13 17:37:28,588 INFO L276 IsEmpty]: Start isEmpty. Operand 88084 states and 178940 transitions. [2022-07-13 17:37:28,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-07-13 17:37:28,589 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 17:37:28,589 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 17:37:28,606 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 17:37:28,806 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 17:37:28,807 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 17:37:28,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 17:37:28,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1979288759, now seen corresponding path program 1 times [2022-07-13 17:37:28,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 17:37:28,807 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1181855450] [2022-07-13 17:37:28,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 17:37:28,807 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 17:37:28,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:28,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:28,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:28,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:28,997 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-13 17:37:28,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-13 17:37:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-13 17:37:29,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-13 17:37:29,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,009 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-13 17:37:29,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-13 17:37:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-13 17:37:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 74 [2022-07-13 17:37:29,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2022-07-13 17:37:29,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-13 17:37:29,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 17:37:29,029 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-13 17:37:29,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 17:37:29,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1181855450] [2022-07-13 17:37:29,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1181855450] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 17:37:29,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 17:37:29,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-13 17:37:29,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1087121733] [2022-07-13 17:37:29,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 17:37:29,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-13 17:37:29,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 17:37:29,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-13 17:37:29,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-07-13 17:37:29,032 INFO L87 Difference]: Start difference. First operand 88084 states and 178940 transitions. Second operand has 6 states, 6 states have (on average 12.666666666666666) internal successors, (76), 4 states have internal predecessors, (76), 2 states have call successors, (14), 4 states have call predecessors, (14), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12)