./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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_spec1_product11.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 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 04:21:56,719 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 04:21:56,721 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 04:21:56,760 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 04:21:56,761 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 04:21:56,762 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 04:21:56,766 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 04:21:56,769 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 04:21:56,771 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 04:21:56,775 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 04:21:56,776 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 04:21:56,780 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 04:21:56,781 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 04:21:56,783 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 04:21:56,784 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 04:21:56,785 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 04:21:56,786 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 04:21:56,787 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 04:21:56,790 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 04:21:56,795 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 04:21:56,796 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 04:21:56,797 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 04:21:56,798 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 04:21:56,800 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 04:21:56,801 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 04:21:56,807 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 04:21:56,807 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 04:21:56,808 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 04:21:56,809 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 04:21:56,809 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 04:21:56,810 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 04:21:56,810 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 04:21:56,811 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 04:21:56,812 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 04:21:56,813 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 04:21:56,814 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 04:21:56,814 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 04:21:56,815 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 04:21:56,815 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 04:21:56,815 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 04:21:56,816 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 04:21:56,817 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 04:21:56,822 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 04:21:56,854 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 04:21:56,854 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 04:21:56,854 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 04:21:56,855 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 04:21:56,855 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 04:21:56,856 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 04:21:56,856 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 04:21:56,856 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 04:21:56,857 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 04:21:56,857 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 04:21:56,858 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 04:21:56,858 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 04:21:56,858 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 04:21:56,858 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 04:21:56,858 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 04:21:56,859 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 04:21:56,860 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 04:21:56,860 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 04:21:56,860 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 04:21:56,860 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:21:56,860 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 04:21:56,861 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 04:21:56,861 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 04:21:56,861 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 04:21:56,861 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 04:21:56,861 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 04:21:56,862 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 04:21:56,862 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 04:21:56,862 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 5477c3156be335e627e6d8ad4c695e912cf982226281f4316d6a1123dc83cedb [2022-07-21 04:21:57,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 04:21:57,220 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 04:21:57,222 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 04:21:57,223 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 04:21:57,223 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 04:21:57,224 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-07-21 04:21:57,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bebd267c/2d5beaf157bc49a2abb1859aeb0a2c27/FLAG27045eec1 [2022-07-21 04:21:57,838 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 04:21:57,839 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/product-lines/elevator_spec1_product11.cil.c [2022-07-21 04:21:57,861 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bebd267c/2d5beaf157bc49a2abb1859aeb0a2c27/FLAG27045eec1 [2022-07-21 04:21:58,248 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7bebd267c/2d5beaf157bc49a2abb1859aeb0a2c27 [2022-07-21 04:21:58,250 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 04:21:58,252 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 04:21:58,255 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 04:21:58,255 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 04:21:58,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 04:21:58,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:58,260 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@39e568d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58, skipping insertion in model container [2022-07-21 04:21:58,260 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:58,267 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 04:21:58,327 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 04:21:58,671 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_spec1_product11.cil.c[40826,40839] [2022-07-21 04:21:58,785 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:21:58,793 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 04:21:58,865 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_spec1_product11.cil.c[40826,40839] [2022-07-21 04:21:58,903 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 04:21:58,925 INFO L208 MainTranslator]: Completed translation [2022-07-21 04:21:58,925 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58 WrapperNode [2022-07-21 04:21:58,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 04:21:58,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 04:21:58,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 04:21:58,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 04:21:58,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:58,965 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,008 INFO L137 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1118 [2022-07-21 04:21:59,008 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 04:21:59,009 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 04:21:59,009 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 04:21:59,009 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 04:21:59,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,017 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,024 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,024 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,050 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,063 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,067 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,074 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 04:21:59,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 04:21:59,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 04:21:59,076 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 04:21:59,076 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (1/1) ... [2022-07-21 04:21:59,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 04:21:59,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:21:59,104 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) [2022-07-21 04:21:59,154 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 [2022-07-21 04:21:59,172 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-07-21 04:21:59,172 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-07-21 04:21:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 04:21:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-07-21 04:21:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-07-21 04:21:59,173 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-07-21 04:21:59,173 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-07-21 04:21:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-07-21 04:21:59,175 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-07-21 04:21:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-07-21 04:21:59,175 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-07-21 04:21:59,175 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-07-21 04:21:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-07-21 04:21:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-07-21 04:21:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-07-21 04:21:59,176 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-07-21 04:21:59,176 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-07-21 04:21:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-07-21 04:21:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-07-21 04:21:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-07-21 04:21:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-07-21 04:21:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-07-21 04:21:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-07-21 04:21:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-07-21 04:21:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-07-21 04:21:59,194 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-07-21 04:21:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-07-21 04:21:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 04:21:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-07-21 04:21:59,196 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-07-21 04:21:59,336 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 04:21:59,338 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 04:22:00,305 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 04:22:00,319 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 04:22:00,319 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-21 04:22:00,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:00 BoogieIcfgContainer [2022-07-21 04:22:00,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 04:22:00,324 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 04:22:00,325 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 04:22:00,327 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 04:22:00,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:21:58" (1/3) ... [2022-07-21 04:22:00,328 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76482a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:00, skipping insertion in model container [2022-07-21 04:22:00,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:21:58" (2/3) ... [2022-07-21 04:22:00,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76482a76 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:22:00, skipping insertion in model container [2022-07-21 04:22:00,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:22:00" (3/3) ... [2022-07-21 04:22:00,330 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product11.cil.c [2022-07-21 04:22:00,343 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 04:22:00,343 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 04:22:00,410 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 04:22:00,416 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@1bb34873, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@5060e064 [2022-07-21 04:22:00,416 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 04:22:00,422 INFO L276 IsEmpty]: Start isEmpty. Operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) [2022-07-21 04:22:00,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2022-07-21 04:22:00,454 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:00,455 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:00,455 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:00,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:00,460 INFO L85 PathProgramCache]: Analyzing trace with hash 962722650, now seen corresponding path program 1 times [2022-07-21 04:22:00,468 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:00,468 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327769792] [2022-07-21 04:22:00,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:00,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:00,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:00,904 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:00,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:00,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:00,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:00,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:22:01,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:22:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:22:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,250 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:22:01,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,296 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,356 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:01,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:01,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:01,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:01,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,389 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:01,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:01,399 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:01,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327769792] [2022-07-21 04:22:01,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327769792] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:01,401 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1330360815] [2022-07-21 04:22:01,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:01,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:01,401 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:01,407 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) [2022-07-21 04:22:01,437 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 04:22:01,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:01,789 INFO L263 TraceCheckSpWp]: Trace formula consists of 1851 conjuncts, 1 conjunts are in the unsatisfiable core [2022-07-21 04:22:01,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:01,825 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:22:01,825 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:01,826 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1330360815] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:01,826 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:01,826 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 7 [2022-07-21 04:22:01,828 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [28971832] [2022-07-21 04:22:01,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:01,833 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-21 04:22:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:01,856 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-21 04:22:01,856 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:22:01,860 INFO L87 Difference]: Start difference. First operand has 561 states, 438 states have (on average 1.6917808219178083) internal successors, (741), 459 states have internal predecessors, (741), 97 states have call successors, (97), 24 states have call predecessors, (97), 24 states have return successors, (97), 91 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:22:01,931 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:01,932 INFO L93 Difference]: Finished difference Result 582 states and 965 transitions. [2022-07-21 04:22:01,933 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-21 04:22:01,934 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 125 [2022-07-21 04:22:01,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:01,965 INFO L225 Difference]: With dead ends: 582 [2022-07-21 04:22:01,965 INFO L226 Difference]: Without dead ends: 553 [2022-07-21 04:22:01,969 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 161 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:22:01,972 INFO L413 NwaCegarLoop]: 926 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 926 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:01,973 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:01,996 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-21 04:22:02,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-21 04:22:02,059 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6898148148148149) internal successors, (730), 451 states have internal predecessors, (730), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:02,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 919 transitions. [2022-07-21 04:22:02,072 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 919 transitions. Word has length 125 [2022-07-21 04:22:02,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:02,074 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 919 transitions. [2022-07-21 04:22:02,074 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 36.0) internal successors, (72), 2 states have internal predecessors, (72), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:22:02,075 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 919 transitions. [2022-07-21 04:22:02,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 128 [2022-07-21 04:22:02,085 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:02,086 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:02,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:02,289 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,SelfDestructingSolverStorable0 [2022-07-21 04:22:02,290 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:02,291 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:02,295 INFO L85 PathProgramCache]: Analyzing trace with hash 612259598, now seen corresponding path program 1 times [2022-07-21 04:22:02,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:02,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1924039525] [2022-07-21 04:22:02,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:02,298 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:02,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,522 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:22:02,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2022-07-21 04:22:02,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,594 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,599 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2022-07-21 04:22:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2022-07-21 04:22:02,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,811 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:02,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:02,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,819 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,822 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:02,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:02,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:02,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:02,837 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:02,838 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:02,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1924039525] [2022-07-21 04:22:02,838 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1924039525] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:02,838 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1173637529] [2022-07-21 04:22:02,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:02,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:02,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:02,840 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) [2022-07-21 04:22:02,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 04:22:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,191 INFO L263 TraceCheckSpWp]: Trace formula consists of 1854 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:03,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:03,244 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:22:03,245 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:03,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1173637529] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:03,245 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:03,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:03,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1720129362] [2022-07-21 04:22:03,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:03,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:03,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:03,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:03,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:03,248 INFO L87 Difference]: Start difference. First operand 553 states and 919 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:03,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:03,402 INFO L93 Difference]: Finished difference Result 1097 states and 1830 transitions. [2022-07-21 04:22:03,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:03,412 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 127 [2022-07-21 04:22:03,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:03,418 INFO L225 Difference]: With dead ends: 1097 [2022-07-21 04:22:03,418 INFO L226 Difference]: Without dead ends: 553 [2022-07-21 04:22:03,424 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 163 GetRequests, 155 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:03,426 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 14 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:03,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2708 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:03,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-21 04:22:03,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-21 04:22:03,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6875) internal successors, (729), 451 states have internal predecessors, (729), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:03,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 918 transitions. [2022-07-21 04:22:03,459 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 918 transitions. Word has length 127 [2022-07-21 04:22:03,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:03,460 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 918 transitions. [2022-07-21 04:22:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:03,460 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 918 transitions. [2022-07-21 04:22:03,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2022-07-21 04:22:03,465 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:03,465 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:03,492 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:03,687 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,SelfDestructingSolverStorable1 [2022-07-21 04:22:03,688 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:03,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:03,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1908031680, now seen corresponding path program 1 times [2022-07-21 04:22:03,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:03,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1236429909] [2022-07-21 04:22:03,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:03,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:03,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:03,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,840 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:03,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:03,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2022-07-21 04:22:03,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:03,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:03,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:03,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2022-07-21 04:22:04,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:04,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:04,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:04,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:04,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,094 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:04,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,100 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:04,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:04,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,113 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:04,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:04,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,119 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:04,119 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:04,119 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1236429909] [2022-07-21 04:22:04,119 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1236429909] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:04,120 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661764037] [2022-07-21 04:22:04,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:04,120 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:04,120 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:04,121 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) [2022-07-21 04:22:04,148 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-21 04:22:04,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:04,520 INFO L263 TraceCheckSpWp]: Trace formula consists of 1856 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:04,526 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:04,553 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:22:04,553 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:04,554 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661764037] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:04,554 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:04,554 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:04,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1192986465] [2022-07-21 04:22:04,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:04,555 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:04,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:04,556 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:04,556 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:04,556 INFO L87 Difference]: Start difference. First operand 553 states and 918 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:04,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:04,621 INFO L93 Difference]: Finished difference Result 1097 states and 1828 transitions. [2022-07-21 04:22:04,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:04,622 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 129 [2022-07-21 04:22:04,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:04,626 INFO L225 Difference]: With dead ends: 1097 [2022-07-21 04:22:04,626 INFO L226 Difference]: Without dead ends: 553 [2022-07-21 04:22:04,629 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 157 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:04,630 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 12 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:04,630 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2708 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:04,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 553 states. [2022-07-21 04:22:04,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 553 to 553. [2022-07-21 04:22:04,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 553 states, 432 states have (on average 1.6851851851851851) internal successors, (728), 451 states have internal predecessors, (728), 97 states have call successors, (97), 24 states have call predecessors, (97), 23 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:04,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 553 states to 553 states and 917 transitions. [2022-07-21 04:22:04,657 INFO L78 Accepts]: Start accepts. Automaton has 553 states and 917 transitions. Word has length 129 [2022-07-21 04:22:04,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:04,658 INFO L495 AbstractCegarLoop]: Abstraction has 553 states and 917 transitions. [2022-07-21 04:22:04,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:04,658 INFO L276 IsEmpty]: Start isEmpty. Operand 553 states and 917 transitions. [2022-07-21 04:22:04,663 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2022-07-21 04:22:04,663 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:04,663 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:04,684 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:04,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:04,872 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:04,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:04,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1032252274, now seen corresponding path program 1 times [2022-07-21 04:22:04,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:04,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129875632] [2022-07-21 04:22:04,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:04,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:04,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:05,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:05,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2022-07-21 04:22:05,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2022-07-21 04:22:05,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,258 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:05,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:05,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:05,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,273 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:05,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,276 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:05,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,278 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:05,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129875632] [2022-07-21 04:22:05,279 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2129875632] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:05,279 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [203377744] [2022-07-21 04:22:05,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:05,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:05,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:05,284 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:05,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-21 04:22:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:05,602 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:05,606 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:05,646 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:22:05,649 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:05,650 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [203377744] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:05,650 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:05,650 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:05,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510747604] [2022-07-21 04:22:05,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:05,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:05,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:05,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:05,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:05,653 INFO L87 Difference]: Start difference. First operand 553 states and 917 transitions. Second operand has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:05,719 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:05,719 INFO L93 Difference]: Finished difference Result 1104 states and 1835 transitions. [2022-07-21 04:22:05,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:05,720 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 131 [2022-07-21 04:22:05,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:05,725 INFO L225 Difference]: With dead ends: 1104 [2022-07-21 04:22:05,726 INFO L226 Difference]: Without dead ends: 562 [2022-07-21 04:22:05,728 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:05,731 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 20 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 40 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 40 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:05,731 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 40 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:05,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-21 04:22:05,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-21 04:22:05,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6818181818181819) internal successors, (740), 459 states have internal predecessors, (740), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:05,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 929 transitions. [2022-07-21 04:22:05,762 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 929 transitions. Word has length 131 [2022-07-21 04:22:05,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:05,762 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 929 transitions. [2022-07-21 04:22:05,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.25) internal successors, (81), 4 states have internal predecessors, (81), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:05,763 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 929 transitions. [2022-07-21 04:22:05,766 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 133 [2022-07-21 04:22:05,766 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:05,767 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:05,802 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:05,991 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:05,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:05,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:05,992 INFO L85 PathProgramCache]: Analyzing trace with hash -1063424087, now seen corresponding path program 1 times [2022-07-21 04:22:05,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:05,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [631455056] [2022-07-21 04:22:05,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:05,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:06,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:06,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:22:06,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,170 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:22:06,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,182 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,185 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:06,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:22:06,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,415 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,417 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,418 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,420 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:06,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:06,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,433 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:06,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:06,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,438 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:06,438 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [631455056] [2022-07-21 04:22:06,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [631455056] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:06,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [234025399] [2022-07-21 04:22:06,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:06,439 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:06,439 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:06,441 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:06,447 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-21 04:22:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:06,766 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:06,770 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:06,798 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:22:06,799 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:06,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [234025399] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:06,799 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:06,799 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:06,800 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296110902] [2022-07-21 04:22:06,800 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:06,800 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:06,800 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:06,801 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:06,801 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:06,801 INFO L87 Difference]: Start difference. First operand 562 states and 929 transitions. Second operand has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:06,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:06,861 INFO L93 Difference]: Finished difference Result 1106 states and 1836 transitions. [2022-07-21 04:22:06,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:06,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 132 [2022-07-21 04:22:06,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:06,866 INFO L225 Difference]: With dead ends: 1106 [2022-07-21 04:22:06,866 INFO L226 Difference]: Without dead ends: 562 [2022-07-21 04:22:06,868 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 160 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:06,869 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 18 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:06,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 2708 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:06,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-21 04:22:06,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-21 04:22:06,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6795454545454545) internal successors, (739), 459 states have internal predecessors, (739), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:06,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 928 transitions. [2022-07-21 04:22:06,888 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 928 transitions. Word has length 132 [2022-07-21 04:22:06,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:06,888 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 928 transitions. [2022-07-21 04:22:06,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.5) internal successors, (82), 4 states have internal predecessors, (82), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:06,889 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 928 transitions. [2022-07-21 04:22:06,892 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2022-07-21 04:22:06,892 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:06,892 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:06,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:07,117 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:07,118 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:07,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:07,118 INFO L85 PathProgramCache]: Analyzing trace with hash -1178788366, now seen corresponding path program 1 times [2022-07-21 04:22:07,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:07,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [947459860] [2022-07-21 04:22:07,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:07,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:07,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:07,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2022-07-21 04:22:07,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2022-07-21 04:22:07,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,292 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:07,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2022-07-21 04:22:07,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:07,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:07,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:07,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:07,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,508 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:07,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:07,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [947459860] [2022-07-21 04:22:07,508 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [947459860] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:07,508 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [183697856] [2022-07-21 04:22:07,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:07,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:07,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:07,510 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:07,515 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-07-21 04:22:07,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:07,839 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:07,843 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:07,871 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2022-07-21 04:22:07,872 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:07,872 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [183697856] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:07,872 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:07,872 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:07,872 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [583652640] [2022-07-21 04:22:07,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:07,873 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:07,873 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:07,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:07,874 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:07,874 INFO L87 Difference]: Start difference. First operand 562 states and 928 transitions. Second operand has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:07,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:07,929 INFO L93 Difference]: Finished difference Result 1106 states and 1835 transitions. [2022-07-21 04:22:07,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:07,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) Word has length 133 [2022-07-21 04:22:07,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:07,934 INFO L225 Difference]: With dead ends: 1106 [2022-07-21 04:22:07,934 INFO L226 Difference]: Without dead ends: 562 [2022-07-21 04:22:07,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:07,937 INFO L413 NwaCegarLoop]: 905 mSDtfsCounter, 17 mSDsluCounter, 1803 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 2708 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:07,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 2708 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:07,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 562 states. [2022-07-21 04:22:07,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 562 to 562. [2022-07-21 04:22:07,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 562 states, 440 states have (on average 1.6772727272727272) internal successors, (738), 459 states have internal predecessors, (738), 97 states have call successors, (97), 25 states have call predecessors, (97), 24 states have return successors, (92), 90 states have call predecessors, (92), 92 states have call successors, (92) [2022-07-21 04:22:07,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 562 states to 562 states and 927 transitions. [2022-07-21 04:22:07,954 INFO L78 Accepts]: Start accepts. Automaton has 562 states and 927 transitions. Word has length 133 [2022-07-21 04:22:07,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:07,955 INFO L495 AbstractCegarLoop]: Abstraction has 562 states and 927 transitions. [2022-07-21 04:22:07,955 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.75) internal successors, (83), 4 states have internal predecessors, (83), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 1 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:07,955 INFO L276 IsEmpty]: Start isEmpty. Operand 562 states and 927 transitions. [2022-07-21 04:22:07,958 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:22:07,958 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:07,958 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:07,984 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:08,177 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:08,177 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:08,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:08,178 INFO L85 PathProgramCache]: Analyzing trace with hash 390848205, now seen corresponding path program 1 times [2022-07-21 04:22:08,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:08,178 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625273129] [2022-07-21 04:22:08,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:08,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:08,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:08,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,308 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:08,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:22:08,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:22:08,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,513 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,528 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:08,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:08,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:08,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:08,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,549 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:08,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,551 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:22:08,551 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625273129] [2022-07-21 04:22:08,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [625273129] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:08,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [94360800] [2022-07-21 04:22:08,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:08,552 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:08,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:08,556 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:08,582 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-07-21 04:22:08,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:08,885 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:22:08,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:08,964 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:08,965 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:08,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [94360800] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:08,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:08,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-21 04:22:08,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799116717] [2022-07-21 04:22:08,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:08,966 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:08,966 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:08,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:08,967 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:22:08,967 INFO L87 Difference]: Start difference. First operand 562 states and 927 transitions. Second operand has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:09,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:09,067 INFO L93 Difference]: Finished difference Result 1125 states and 1865 transitions. [2022-07-21 04:22:09,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:22:09,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 134 [2022-07-21 04:22:09,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:09,072 INFO L225 Difference]: With dead ends: 1125 [2022-07-21 04:22:09,072 INFO L226 Difference]: Without dead ends: 585 [2022-07-21 04:22:09,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 159 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:09,075 INFO L413 NwaCegarLoop]: 906 mSDtfsCounter, 148 mSDsluCounter, 4417 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 149 SdHoareTripleChecker+Valid, 5323 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:09,075 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [149 Valid, 5323 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:09,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585 states. [2022-07-21 04:22:09,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 585 to 581. [2022-07-21 04:22:09,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6754385964912282) internal successors, (764), 477 states have internal predecessors, (764), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-21 04:22:09,095 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 958 transitions. [2022-07-21 04:22:09,096 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 958 transitions. Word has length 134 [2022-07-21 04:22:09,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:09,096 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 958 transitions. [2022-07-21 04:22:09,096 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.5) internal successors, (93), 6 states have internal predecessors, (93), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:09,096 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 958 transitions. [2022-07-21 04:22:09,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2022-07-21 04:22:09,100 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:09,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:09,127 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:09,319 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:09,320 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:09,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:09,320 INFO L85 PathProgramCache]: Analyzing trace with hash 1677330510, now seen corresponding path program 1 times [2022-07-21 04:22:09,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:09,320 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748928326] [2022-07-21 04:22:09,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:09,321 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:09,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:09,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,493 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2022-07-21 04:22:09,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:09,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:22:09,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:09,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:09,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:09,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,754 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:09,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:09,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:09,758 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:22:09,758 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748928326] [2022-07-21 04:22:09,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [748928326] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:09,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933469667] [2022-07-21 04:22:09,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:09,759 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:09,759 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:09,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:09,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-07-21 04:22:10,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:10,088 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:10,124 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 16 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:10,124 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:10,125 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933469667] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:10,125 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:10,125 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:10,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [501323152] [2022-07-21 04:22:10,127 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:10,127 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:10,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:10,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:10,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:10,128 INFO L87 Difference]: Start difference. First operand 581 states and 958 transitions. Second operand has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:10,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:10,262 INFO L93 Difference]: Finished difference Result 1166 states and 1939 transitions. [2022-07-21 04:22:10,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:10,263 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 134 [2022-07-21 04:22:10,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:10,270 INFO L225 Difference]: With dead ends: 1166 [2022-07-21 04:22:10,270 INFO L226 Difference]: Without dead ends: 581 [2022-07-21 04:22:10,272 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 170 GetRequests, 162 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:10,273 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 135 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:10,273 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 2525 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:10,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-21 04:22:10,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-07-21 04:22:10,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6644736842105263) internal successors, (759), 477 states have internal predecessors, (759), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-21 04:22:10,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 953 transitions. [2022-07-21 04:22:10,292 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 953 transitions. Word has length 134 [2022-07-21 04:22:10,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:10,292 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 953 transitions. [2022-07-21 04:22:10,292 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.25) internal successors, (93), 4 states have internal predecessors, (93), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:10,293 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 953 transitions. [2022-07-21 04:22:10,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 137 [2022-07-21 04:22:10,296 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:10,296 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:10,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:10,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-07-21 04:22:10,516 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:10,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:10,516 INFO L85 PathProgramCache]: Analyzing trace with hash 572426598, now seen corresponding path program 1 times [2022-07-21 04:22:10,516 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:10,516 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2087488621] [2022-07-21 04:22:10,516 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:10,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:10,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:10,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,665 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:10,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,681 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:22:10,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,696 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:10,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:10,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,880 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,891 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,893 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:10,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:10,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:10,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:10,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,911 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:10,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:10,913 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:22:10,913 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:10,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2087488621] [2022-07-21 04:22:10,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2087488621] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:10,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1287236038] [2022-07-21 04:22:10,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:10,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:10,914 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:10,915 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:10,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-07-21 04:22:11,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,250 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:11,254 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:11,284 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:11,285 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:11,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1287236038] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:11,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:11,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:11,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096643350] [2022-07-21 04:22:11,286 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:11,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:11,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:11,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:11,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:11,287 INFO L87 Difference]: Start difference. First operand 581 states and 953 transitions. Second operand has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:11,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:11,414 INFO L93 Difference]: Finished difference Result 1166 states and 1929 transitions. [2022-07-21 04:22:11,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:11,415 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 136 [2022-07-21 04:22:11,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:11,418 INFO L225 Difference]: With dead ends: 1166 [2022-07-21 04:22:11,419 INFO L226 Difference]: Without dead ends: 581 [2022-07-21 04:22:11,421 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 164 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:11,423 INFO L413 NwaCegarLoop]: 855 mSDtfsCounter, 129 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 116 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 129 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 116 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:11,423 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [129 Valid, 2525 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 116 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:11,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 581 states. [2022-07-21 04:22:11,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 581 to 581. [2022-07-21 04:22:11,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 581 states, 456 states have (on average 1.6535087719298245) internal successors, (754), 477 states have internal predecessors, (754), 98 states have call successors, (98), 25 states have call predecessors, (98), 26 states have return successors, (96), 91 states have call predecessors, (96), 93 states have call successors, (96) [2022-07-21 04:22:11,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 581 states to 581 states and 948 transitions. [2022-07-21 04:22:11,444 INFO L78 Accepts]: Start accepts. Automaton has 581 states and 948 transitions. Word has length 136 [2022-07-21 04:22:11,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:11,445 INFO L495 AbstractCegarLoop]: Abstraction has 581 states and 948 transitions. [2022-07-21 04:22:11,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.75) internal successors, (95), 4 states have internal predecessors, (95), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:11,445 INFO L276 IsEmpty]: Start isEmpty. Operand 581 states and 948 transitions. [2022-07-21 04:22:11,449 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2022-07-21 04:22:11,449 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:11,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:11,479 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:11,667 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:11,667 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:11,668 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash -516128210, now seen corresponding path program 1 times [2022-07-21 04:22:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:11,668 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2067075626] [2022-07-21 04:22:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:11,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,798 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:11,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,812 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:11,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,828 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2022-07-21 04:22:11,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,839 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:11,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,843 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:11,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:11,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:22:12,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,031 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:12,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,033 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:12,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:12,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:12,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,050 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:22:12,050 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2067075626] [2022-07-21 04:22:12,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2067075626] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:12,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059102711] [2022-07-21 04:22:12,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:12,051 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:12,051 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:12,056 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:12,087 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-07-21 04:22:12,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 1864 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:12,375 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:12,418 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:12,419 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:12,419 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059102711] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:12,419 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:12,419 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:12,420 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [701687643] [2022-07-21 04:22:12,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:12,421 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:12,421 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:12,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:12,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:12,422 INFO L87 Difference]: Start difference. First operand 581 states and 948 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:12,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:12,584 INFO L93 Difference]: Finished difference Result 1202 states and 1977 transitions. [2022-07-21 04:22:12,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:12,584 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 138 [2022-07-21 04:22:12,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:12,589 INFO L225 Difference]: With dead ends: 1202 [2022-07-21 04:22:12,589 INFO L226 Difference]: Without dead ends: 647 [2022-07-21 04:22:12,592 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 174 GetRequests, 166 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:12,592 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 179 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 179 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:12,593 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [179 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:12,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 647 states. [2022-07-21 04:22:12,613 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 647 to 632. [2022-07-21 04:22:12,615 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-21 04:22:12,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-07-21 04:22:12,618 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 138 [2022-07-21 04:22:12,618 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:12,619 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-07-21 04:22:12,619 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:12,619 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-07-21 04:22:12,622 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 04:22:12,622 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:12,623 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:12,656 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:12,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-07-21 04:22:12,845 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:12,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:12,845 INFO L85 PathProgramCache]: Analyzing trace with hash 916705563, now seen corresponding path program 1 times [2022-07-21 04:22:12,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:12,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [407273548] [2022-07-21 04:22:12,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:12,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:12,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,962 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:12,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:12,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:12,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:13,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,017 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:13,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,160 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:22:13,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,189 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:13,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,194 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:13,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,201 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:13,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,211 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:13,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,213 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:13,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:13,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [407273548] [2022-07-21 04:22:13,214 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [407273548] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:13,214 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1446901490] [2022-07-21 04:22:13,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:13,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:13,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:13,216 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:13,246 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-07-21 04:22:13,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:13,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:22:13,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:13,626 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:13,626 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:13,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1446901490] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:13,626 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:13,627 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-21 04:22:13,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660219653] [2022-07-21 04:22:13,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:13,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:22:13,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:13,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:22:13,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:13,629 INFO L87 Difference]: Start difference. First operand 632 states and 1032 transitions. Second operand has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:13,784 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:13,784 INFO L93 Difference]: Finished difference Result 1194 states and 1957 transitions. [2022-07-21 04:22:13,785 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:22:13,785 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-07-21 04:22:13,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:13,789 INFO L225 Difference]: With dead ends: 1194 [2022-07-21 04:22:13,789 INFO L226 Difference]: Without dead ends: 654 [2022-07-21 04:22:13,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 165 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:22:13,792 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 177 mSDsluCounter, 5209 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6095 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:13,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6095 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:13,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 654 states. [2022-07-21 04:22:13,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 654 to 632. [2022-07-21 04:22:13,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.658102766798419) internal successors, (839), 527 states have internal predecessors, (839), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-21 04:22:13,811 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1032 transitions. [2022-07-21 04:22:13,811 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1032 transitions. Word has length 139 [2022-07-21 04:22:13,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:13,812 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1032 transitions. [2022-07-21 04:22:13,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 14.0) internal successors, (98), 7 states have internal predecessors, (98), 3 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:13,812 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1032 transitions. [2022-07-21 04:22:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 04:22:13,815 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:13,816 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-07-21 04:22:13,843 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:14,029 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-07-21 04:22:14,029 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:14,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:14,029 INFO L85 PathProgramCache]: Analyzing trace with hash 781948475, now seen corresponding path program 1 times [2022-07-21 04:22:14,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:14,030 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [706457120] [2022-07-21 04:22:14,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:14,030 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:14,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:14,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,172 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:14,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:14,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:14,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:22:14,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,384 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,396 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:14,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,399 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:14,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,401 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:14,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,411 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:14,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:14,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,415 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-07-21 04:22:14,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [706457120] [2022-07-21 04:22:14,415 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [706457120] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:14,415 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2097446088] [2022-07-21 04:22:14,416 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:14,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:14,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:14,417 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:14,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-07-21 04:22:14,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:14,715 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:14,718 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:14,753 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-07-21 04:22:14,754 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:14,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2097446088] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:14,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:14,754 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:14,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452524170] [2022-07-21 04:22:14,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:14,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:14,755 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:14,755 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:14,756 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:14,756 INFO L87 Difference]: Start difference. First operand 632 states and 1032 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:14,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:14,929 INFO L93 Difference]: Finished difference Result 1202 states and 1975 transitions. [2022-07-21 04:22:14,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:14,930 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 139 [2022-07-21 04:22:14,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:14,934 INFO L225 Difference]: With dead ends: 1202 [2022-07-21 04:22:14,934 INFO L226 Difference]: Without dead ends: 632 [2022-07-21 04:22:14,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 175 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:14,939 INFO L413 NwaCegarLoop]: 865 mSDtfsCounter, 173 mSDsluCounter, 1670 mSDsCounter, 0 mSdLazyCounter, 151 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 173 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 151 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:14,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [173 Valid, 2535 Invalid, 161 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 151 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:14,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 632 states. [2022-07-21 04:22:14,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 632 to 632. [2022-07-21 04:22:14,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 632 states, 506 states have (on average 1.6482213438735178) internal successors, (834), 527 states have internal predecessors, (834), 98 states have call successors, (98), 26 states have call predecessors, (98), 27 states have return successors, (95), 91 states have call predecessors, (95), 93 states have call successors, (95) [2022-07-21 04:22:14,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 632 states to 632 states and 1027 transitions. [2022-07-21 04:22:14,961 INFO L78 Accepts]: Start accepts. Automaton has 632 states and 1027 transitions. Word has length 139 [2022-07-21 04:22:14,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:14,962 INFO L495 AbstractCegarLoop]: Abstraction has 632 states and 1027 transitions. [2022-07-21 04:22:14,962 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:14,962 INFO L276 IsEmpty]: Start isEmpty. Operand 632 states and 1027 transitions. [2022-07-21 04:22:14,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2022-07-21 04:22:14,966 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:14,966 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:14,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2022-07-21 04:22:15,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-07-21 04:22:15,179 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:15,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:15,180 INFO L85 PathProgramCache]: Analyzing trace with hash 2038984762, now seen corresponding path program 1 times [2022-07-21 04:22:15,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:15,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1558450565] [2022-07-21 04:22:15,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:15,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:15,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:15,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,337 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:15,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:15,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:15,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,540 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:22:15,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,559 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,572 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:15,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,575 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:15,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:15,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:15,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:15,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,592 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:15,592 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:15,592 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1558450565] [2022-07-21 04:22:15,592 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1558450565] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:15,593 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [743959617] [2022-07-21 04:22:15,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:15,593 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:15,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:15,594 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:15,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-07-21 04:22:15,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:15,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 1861 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:22:15,910 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:15,990 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:22:15,991 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:15,991 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [743959617] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:15,991 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:15,991 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-21 04:22:15,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649465872] [2022-07-21 04:22:15,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:15,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:15,992 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:15,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:15,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:22:15,993 INFO L87 Difference]: Start difference. First operand 632 states and 1027 transitions. Second operand has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:16,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:16,094 INFO L93 Difference]: Finished difference Result 1129 states and 1849 transitions. [2022-07-21 04:22:16,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:22:16,095 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 139 [2022-07-21 04:22:16,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:16,099 INFO L225 Difference]: With dead ends: 1129 [2022-07-21 04:22:16,099 INFO L226 Difference]: Without dead ends: 656 [2022-07-21 04:22:16,102 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 178 GetRequests, 167 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:16,103 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 134 mSDsluCounter, 4384 mSDsCounter, 0 mSdLazyCounter, 101 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 5282 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 101 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:16,103 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 5282 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 101 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:16,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 656 states. [2022-07-21 04:22:16,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 656 to 651. [2022-07-21 04:22:16,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:16,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-21 04:22:16,124 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 139 [2022-07-21 04:22:16,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:16,124 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-21 04:22:16,124 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 15.833333333333334) internal successors, (95), 6 states have internal predecessors, (95), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:16,125 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-21 04:22:16,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:22:16,128 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:16,128 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:16,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:16,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-21 04:22:16,354 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:16,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:16,354 INFO L85 PathProgramCache]: Analyzing trace with hash 429591986, now seen corresponding path program 1 times [2022-07-21 04:22:16,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:16,354 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111607141] [2022-07-21 04:22:16,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:16,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:16,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:16,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,525 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:16,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,697 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:22:16,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:16,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:16,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:16,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:16,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:16,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:16,746 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:16,746 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:16,746 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111607141] [2022-07-21 04:22:16,747 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111607141] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:16,747 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1866053418] [2022-07-21 04:22:16,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:16,747 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:16,747 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:16,748 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:16,750 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2022-07-21 04:22:17,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-21 04:22:17,028 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:17,104 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:22:17,105 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:17,105 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1866053418] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:17,105 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:17,105 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-21 04:22:17,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1166880915] [2022-07-21 04:22:17,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:17,105 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:17,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:17,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:17,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:22:17,106 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:17,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:17,201 INFO L93 Difference]: Finished difference Result 1159 states and 1900 transitions. [2022-07-21 04:22:17,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:22:17,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-07-21 04:22:17,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:17,206 INFO L225 Difference]: With dead ends: 1159 [2022-07-21 04:22:17,206 INFO L226 Difference]: Without dead ends: 686 [2022-07-21 04:22:17,209 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:17,209 INFO L413 NwaCegarLoop]: 898 mSDtfsCounter, 143 mSDsluCounter, 4374 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5272 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:17,210 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5272 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:17,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 686 states. [2022-07-21 04:22:17,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 686 to 651. [2022-07-21 04:22:17,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:17,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-21 04:22:17,229 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-07-21 04:22:17,229 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:17,229 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-21 04:22:17,230 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 16.0) internal successors, (96), 6 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:17,230 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-21 04:22:17,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:22:17,233 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:17,233 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:22:17,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:17,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:17,459 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:17,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:17,460 INFO L85 PathProgramCache]: Analyzing trace with hash 1424927282, now seen corresponding path program 1 times [2022-07-21 04:22:17,460 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:17,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1044185503] [2022-07-21 04:22:17,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:17,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:17,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,588 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:17,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:17,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:22:17,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,770 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,780 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,782 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,784 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:17,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,801 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,804 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,806 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:17,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,816 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:17,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:17,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:17,823 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:17,823 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:17,823 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1044185503] [2022-07-21 04:22:17,824 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1044185503] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:17,824 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [839750030] [2022-07-21 04:22:17,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:17,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:17,824 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:17,825 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:17,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2022-07-21 04:22:18,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,151 INFO L263 TraceCheckSpWp]: Trace formula consists of 1858 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:22:18,154 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:18,245 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:22:18,246 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:18,246 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [839750030] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:18,246 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:18,246 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-21 04:22:18,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423336928] [2022-07-21 04:22:18,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:18,247 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:22:18,247 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:18,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:22:18,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:18,248 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:18,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:18,387 INFO L93 Difference]: Finished difference Result 1144 states and 1874 transitions. [2022-07-21 04:22:18,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:22:18,388 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 140 [2022-07-21 04:22:18,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:18,392 INFO L225 Difference]: With dead ends: 1144 [2022-07-21 04:22:18,392 INFO L226 Difference]: Without dead ends: 671 [2022-07-21 04:22:18,394 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 168 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:22:18,395 INFO L413 NwaCegarLoop]: 888 mSDtfsCounter, 177 mSDsluCounter, 5215 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 178 SdHoareTripleChecker+Valid, 6103 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:18,395 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [178 Valid, 6103 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:18,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-21 04:22:18,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-07-21 04:22:18,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6475095785440612) internal successors, (860), 545 states have internal predecessors, (860), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:18,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1057 transitions. [2022-07-21 04:22:18,415 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1057 transitions. Word has length 140 [2022-07-21 04:22:18,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:18,415 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1057 transitions. [2022-07-21 04:22:18,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.714285714285714) internal successors, (96), 7 states have internal predecessors, (96), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:18,416 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1057 transitions. [2022-07-21 04:22:18,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2022-07-21 04:22:18,419 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:18,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:18,451 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:18,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2022-07-21 04:22:18,641 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:18,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:18,641 INFO L85 PathProgramCache]: Analyzing trace with hash 401422641, now seen corresponding path program 1 times [2022-07-21 04:22:18,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:18,641 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1993359537] [2022-07-21 04:22:18,641 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:18,641 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:18,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,756 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:18,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,768 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:18,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,800 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:18,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,808 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,809 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2022-07-21 04:22:18,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2022-07-21 04:22:18,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,952 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,963 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,964 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:18,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,965 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:18,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,976 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:18,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:18,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:18,980 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-07-21 04:22:18,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1993359537] [2022-07-21 04:22:18,981 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1993359537] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:18,981 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1827241567] [2022-07-21 04:22:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:18,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:18,982 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:18,984 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:19,011 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2022-07-21 04:22:19,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1862 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:19,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:19,330 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-21 04:22:19,330 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:19,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1827241567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:19,330 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:19,331 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:19,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497340833] [2022-07-21 04:22:19,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:19,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:19,331 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:19,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:19,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:19,332 INFO L87 Difference]: Start difference. First operand 651 states and 1057 transitions. Second operand has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:19,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:19,377 INFO L93 Difference]: Finished difference Result 1196 states and 1959 transitions. [2022-07-21 04:22:19,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:19,378 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 140 [2022-07-21 04:22:19,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:19,382 INFO L225 Difference]: With dead ends: 1196 [2022-07-21 04:22:19,382 INFO L226 Difference]: Without dead ends: 651 [2022-07-21 04:22:19,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:19,385 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 23 mSDsluCounter, 1783 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 2677 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:19,385 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 2677 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:19,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 651 states. [2022-07-21 04:22:19,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 651 to 651. [2022-07-21 04:22:19,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:19,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-07-21 04:22:19,407 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 140 [2022-07-21 04:22:19,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:19,407 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-07-21 04:22:19,407 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.75) internal successors, (99), 4 states have internal predecessors, (99), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:19,408 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-07-21 04:22:19,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2022-07-21 04:22:19,411 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:19,411 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1] [2022-07-21 04:22:19,440 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:19,635 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-07-21 04:22:19,635 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:19,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:19,636 INFO L85 PathProgramCache]: Analyzing trace with hash 144732242, now seen corresponding path program 1 times [2022-07-21 04:22:19,636 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:19,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574591770] [2022-07-21 04:22:19,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:19,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:19,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,739 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:19,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,764 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:19,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:19,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,901 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2022-07-21 04:22:19,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,941 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:19,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:19,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,949 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,950 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:19,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,959 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:19,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:19,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:19,963 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:19,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574591770] [2022-07-21 04:22:19,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574591770] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:19,963 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [835158007] [2022-07-21 04:22:19,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:19,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:19,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:19,965 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:19,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2022-07-21 04:22:20,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,245 INFO L263 TraceCheckSpWp]: Trace formula consists of 1859 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-21 04:22:20,248 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:20,327 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-21 04:22:20,327 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:20,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [835158007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:20,327 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:20,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 13 [2022-07-21 04:22:20,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61415934] [2022-07-21 04:22:20,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:20,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:22:20,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:20,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:22:20,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:20,329 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:20,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:20,459 INFO L93 Difference]: Finished difference Result 1144 states and 1871 transitions. [2022-07-21 04:22:20,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:22:20,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) Word has length 141 [2022-07-21 04:22:20,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:20,464 INFO L225 Difference]: With dead ends: 1144 [2022-07-21 04:22:20,464 INFO L226 Difference]: Without dead ends: 671 [2022-07-21 04:22:20,466 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 183 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=200, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:22:20,467 INFO L413 NwaCegarLoop]: 882 mSDtfsCounter, 185 mSDsluCounter, 5178 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 186 SdHoareTripleChecker+Valid, 6060 SdHoareTripleChecker+Invalid, 156 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:20,467 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [186 Valid, 6060 Invalid, 156 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:20,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 671 states. [2022-07-21 04:22:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 671 to 651. [2022-07-21 04:22:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 651 states, 522 states have (on average 1.6398467432950192) internal successors, (856), 545 states have internal predecessors, (856), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:20,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 651 states to 651 states and 1053 transitions. [2022-07-21 04:22:20,486 INFO L78 Accepts]: Start accepts. Automaton has 651 states and 1053 transitions. Word has length 141 [2022-07-21 04:22:20,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:20,487 INFO L495 AbstractCegarLoop]: Abstraction has 651 states and 1053 transitions. [2022-07-21 04:22:20,487 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.857142857142858) internal successors, (97), 7 states have internal predecessors, (97), 3 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 3 states have call predecessors, (15), 3 states have call successors, (15) [2022-07-21 04:22:20,487 INFO L276 IsEmpty]: Start isEmpty. Operand 651 states and 1053 transitions. [2022-07-21 04:22:20,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 04:22:20,491 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:20,491 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:20,522 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:20,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2022-07-21 04:22:20,708 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:20,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:20,708 INFO L85 PathProgramCache]: Analyzing trace with hash 278048503, now seen corresponding path program 1 times [2022-07-21 04:22:20,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:20,709 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774894644] [2022-07-21 04:22:20,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:20,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:20,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:20,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,858 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:20,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:20,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:20,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:20,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:20,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:20,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:21,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,067 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,070 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:21,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:21,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:21,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,085 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:21,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,087 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-07-21 04:22:21,087 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [774894644] [2022-07-21 04:22:21,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [774894644] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:21,087 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1777062385] [2022-07-21 04:22:21,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:21,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:21,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:21,092 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:21,120 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2022-07-21 04:22:21,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,410 INFO L263 TraceCheckSpWp]: Trace formula consists of 1860 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:22:21,414 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:21,438 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:22:21,438 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:21,438 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1777062385] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:21,438 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:21,438 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:21,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313628876] [2022-07-21 04:22:21,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:21,439 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:21,439 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:21,439 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:21,440 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:21,440 INFO L87 Difference]: Start difference. First operand 651 states and 1053 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:21,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:21,487 INFO L93 Difference]: Finished difference Result 1252 states and 2041 transitions. [2022-07-21 04:22:21,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:21,488 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 142 [2022-07-21 04:22:21,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:21,492 INFO L225 Difference]: With dead ends: 1252 [2022-07-21 04:22:21,492 INFO L226 Difference]: Without dead ends: 687 [2022-07-21 04:22:21,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 181 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:21,495 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 38 mSDsluCounter, 1767 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 2653 SdHoareTripleChecker+Invalid, 43 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:21,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 2653 Invalid, 43 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:21,496 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 687 states. [2022-07-21 04:22:21,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 687 to 675. [2022-07-21 04:22:21,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 675 states, 546 states have (on average 1.619047619047619) internal successors, (884), 569 states have internal predecessors, (884), 99 states have call successors, (99), 26 states have call predecessors, (99), 29 states have return successors, (98), 92 states have call predecessors, (98), 94 states have call successors, (98) [2022-07-21 04:22:21,515 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 675 states to 675 states and 1081 transitions. [2022-07-21 04:22:21,515 INFO L78 Accepts]: Start accepts. Automaton has 675 states and 1081 transitions. Word has length 142 [2022-07-21 04:22:21,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:21,516 INFO L495 AbstractCegarLoop]: Abstraction has 675 states and 1081 transitions. [2022-07-21 04:22:21,516 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-07-21 04:22:21,516 INFO L276 IsEmpty]: Start isEmpty. Operand 675 states and 1081 transitions. [2022-07-21 04:22:21,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 143 [2022-07-21 04:22:21,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:21,520 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:21,546 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2022-07-21 04:22:21,743 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2022-07-21 04:22:21,743 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:21,744 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:21,744 INFO L85 PathProgramCache]: Analyzing trace with hash -2115711700, now seen corresponding path program 1 times [2022-07-21 04:22:21,744 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:21,744 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048549097] [2022-07-21 04:22:21,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:21,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:21,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,877 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:21,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:21,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,900 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:21,902 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:21,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,030 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:22,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:22,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:22,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:22,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2022-07-21 04:22:22,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,078 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2022-07-21 04:22:22,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:22,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,082 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:22,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2022-07-21 04:22:22,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:22,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,093 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2022-07-21 04:22:22,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048549097] [2022-07-21 04:22:22,093 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048549097] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:22,093 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1651991925] [2022-07-21 04:22:22,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:22,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:22,094 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:22,096 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:22,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2022-07-21 04:22:22,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:22,362 INFO L263 TraceCheckSpWp]: Trace formula consists of 1863 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:22,366 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:22,479 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:22,479 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:22,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1651991925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:22,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:22,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 04:22:22,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540940434] [2022-07-21 04:22:22,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:22,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:22,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:22,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:22,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:22,481 INFO L87 Difference]: Start difference. First operand 675 states and 1081 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:22,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:22,913 INFO L93 Difference]: Finished difference Result 1151 states and 1893 transitions. [2022-07-21 04:22:22,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:22:22,914 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 142 [2022-07-21 04:22:22,914 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:22,917 INFO L225 Difference]: With dead ends: 1151 [2022-07-21 04:22:22,918 INFO L226 Difference]: Without dead ends: 683 [2022-07-21 04:22:22,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 171 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:22:22,921 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 842 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 434 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 860 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:22,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [860 Valid, 2276 Invalid, 449 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 434 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:22:22,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 683 states. [2022-07-21 04:22:22,937 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 683 to 683. [2022-07-21 04:22:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 683 states, 553 states have (on average 1.620253164556962) internal successors, (896), 576 states have internal predecessors, (896), 99 states have call successors, (99), 27 states have call predecessors, (99), 30 states have return successors, (99), 92 states have call predecessors, (99), 94 states have call successors, (99) [2022-07-21 04:22:22,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 683 states to 683 states and 1094 transitions. [2022-07-21 04:22:22,941 INFO L78 Accepts]: Start accepts. Automaton has 683 states and 1094 transitions. Word has length 142 [2022-07-21 04:22:22,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:22,942 INFO L495 AbstractCegarLoop]: Abstraction has 683 states and 1094 transitions. [2022-07-21 04:22:22,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:22,942 INFO L276 IsEmpty]: Start isEmpty. Operand 683 states and 1094 transitions. [2022-07-21 04:22:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 145 [2022-07-21 04:22:22,945 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:22,945 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:22,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:23,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:23,159 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:23,160 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:23,160 INFO L85 PathProgramCache]: Analyzing trace with hash -990744076, now seen corresponding path program 1 times [2022-07-21 04:22:23,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:23,160 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390355405] [2022-07-21 04:22:23,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:23,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:23,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:23,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:23,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:23,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:23,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:23,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,500 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,503 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2022-07-21 04:22:23,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,504 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2022-07-21 04:22:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:23,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,516 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2022-07-21 04:22:23,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,518 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:22:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,520 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:23,520 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:23,520 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390355405] [2022-07-21 04:22:23,521 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390355405] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:23,521 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [972348054] [2022-07-21 04:22:23,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:23,521 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:23,521 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:23,524 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:23,538 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2022-07-21 04:22:23,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:23,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 1865 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:23,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:23,941 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:23,941 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:23,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [972348054] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:23,941 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:23,941 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 04:22:23,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549552349] [2022-07-21 04:22:23,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:23,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:23,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:23,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:23,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:23,945 INFO L87 Difference]: Start difference. First operand 683 states and 1094 transitions. Second operand has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:24,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:24,369 INFO L93 Difference]: Finished difference Result 1167 states and 1916 transitions. [2022-07-21 04:22:24,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:22:24,369 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 144 [2022-07-21 04:22:24,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:24,373 INFO L225 Difference]: With dead ends: 1167 [2022-07-21 04:22:24,373 INFO L226 Difference]: Without dead ends: 691 [2022-07-21 04:22:24,376 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 182 GetRequests, 173 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:22:24,376 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 845 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 430 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 863 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 446 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 430 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:24,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [863 Valid, 2276 Invalid, 446 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 430 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:22:24,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 691 states. [2022-07-21 04:22:24,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 691 to 691. [2022-07-21 04:22:24,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 691 states, 560 states have (on average 1.6214285714285714) internal successors, (908), 583 states have internal predecessors, (908), 99 states have call successors, (99), 28 states have call predecessors, (99), 31 states have return successors, (100), 92 states have call predecessors, (100), 94 states have call successors, (100) [2022-07-21 04:22:24,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 691 states to 691 states and 1107 transitions. [2022-07-21 04:22:24,397 INFO L78 Accepts]: Start accepts. Automaton has 691 states and 1107 transitions. Word has length 144 [2022-07-21 04:22:24,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:24,398 INFO L495 AbstractCegarLoop]: Abstraction has 691 states and 1107 transitions. [2022-07-21 04:22:24,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.4) internal successors, (92), 4 states have internal predecessors, (92), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:24,398 INFO L276 IsEmpty]: Start isEmpty. Operand 691 states and 1107 transitions. [2022-07-21 04:22:24,401 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 147 [2022-07-21 04:22:24,401 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:24,402 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:24,431 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:24,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:24,627 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:24,628 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:24,628 INFO L85 PathProgramCache]: Analyzing trace with hash -193570132, now seen corresponding path program 1 times [2022-07-21 04:22:24,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:24,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277002998] [2022-07-21 04:22:24,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:24,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:24,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:24,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:24,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:24,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,776 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:24,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:24,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2022-07-21 04:22:24,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2022-07-21 04:22:24,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:24,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,943 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2022-07-21 04:22:24,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,946 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 55 [2022-07-21 04:22:24,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:24,947 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:22:24,948 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:24,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277002998] [2022-07-21 04:22:24,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277002998] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:24,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2065687998] [2022-07-21 04:22:24,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:24,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:24,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:24,949 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:24,951 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2022-07-21 04:22:25,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:25,283 INFO L263 TraceCheckSpWp]: Trace formula consists of 1867 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:25,286 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:25,394 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:25,394 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:25,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2065687998] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:25,394 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:25,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 04:22:25,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861292037] [2022-07-21 04:22:25,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:25,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:25,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:25,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:25,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:25,396 INFO L87 Difference]: Start difference. First operand 691 states and 1107 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:25,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:25,768 INFO L93 Difference]: Finished difference Result 1183 states and 1939 transitions. [2022-07-21 04:22:25,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:22:25,768 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 146 [2022-07-21 04:22:25,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:25,771 INFO L225 Difference]: With dead ends: 1183 [2022-07-21 04:22:25,772 INFO L226 Difference]: Without dead ends: 699 [2022-07-21 04:22:25,773 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 175 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:22:25,774 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 831 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 849 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:25,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [849 Valid, 2276 Invalid, 443 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:22:25,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 699 states. [2022-07-21 04:22:25,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 699 to 699. [2022-07-21 04:22:25,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 699 states, 567 states have (on average 1.6225749559082892) internal successors, (920), 590 states have internal predecessors, (920), 99 states have call successors, (99), 29 states have call predecessors, (99), 32 states have return successors, (101), 92 states have call predecessors, (101), 94 states have call successors, (101) [2022-07-21 04:22:25,793 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 699 states to 699 states and 1120 transitions. [2022-07-21 04:22:25,793 INFO L78 Accepts]: Start accepts. Automaton has 699 states and 1120 transitions. Word has length 146 [2022-07-21 04:22:25,793 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:25,794 INFO L495 AbstractCegarLoop]: Abstraction has 699 states and 1120 transitions. [2022-07-21 04:22:25,794 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:25,794 INFO L276 IsEmpty]: Start isEmpty. Operand 699 states and 1120 transitions. [2022-07-21 04:22:25,797 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 149 [2022-07-21 04:22:25,797 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:25,797 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:25,825 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:26,022 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:26,023 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:26,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:26,023 INFO L85 PathProgramCache]: Analyzing trace with hash 2115048172, now seen corresponding path program 1 times [2022-07-21 04:22:26,023 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:26,023 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890898450] [2022-07-21 04:22:26,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:26,023 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:26,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,128 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:26,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,140 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:26,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:26,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:26,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,362 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2022-07-21 04:22:26,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2022-07-21 04:22:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:26,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2022-07-21 04:22:26,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2022-07-21 04:22:26,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,381 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2022-07-21 04:22:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890898450] [2022-07-21 04:22:26,382 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890898450] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:26,382 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1069945298] [2022-07-21 04:22:26,382 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:26,382 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:26,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:26,384 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:26,410 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2022-07-21 04:22:26,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:26,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 1869 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:26,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:26,814 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:26,814 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:26,814 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1069945298] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:26,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:26,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 04:22:26,815 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666500502] [2022-07-21 04:22:26,815 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:26,816 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:26,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:26,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:26,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:26,817 INFO L87 Difference]: Start difference. First operand 699 states and 1120 transitions. Second operand has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:27,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:27,242 INFO L93 Difference]: Finished difference Result 1199 states and 1962 transitions. [2022-07-21 04:22:27,243 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:22:27,243 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 148 [2022-07-21 04:22:27,243 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:27,248 INFO L225 Difference]: With dead ends: 1199 [2022-07-21 04:22:27,248 INFO L226 Difference]: Without dead ends: 707 [2022-07-21 04:22:27,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 177 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:22:27,252 INFO L413 NwaCegarLoop]: 875 mSDtfsCounter, 833 mSDsluCounter, 1401 mSDsCounter, 0 mSdLazyCounter, 422 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 851 SdHoareTripleChecker+Valid, 2276 SdHoareTripleChecker+Invalid, 440 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:27,252 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [851 Valid, 2276 Invalid, 440 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 422 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-21 04:22:27,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 707 states. [2022-07-21 04:22:27,272 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 707 to 707. [2022-07-21 04:22:27,273 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 707 states, 574 states have (on average 1.6236933797909407) internal successors, (932), 597 states have internal predecessors, (932), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-21 04:22:27,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 707 states to 707 states and 1133 transitions. [2022-07-21 04:22:27,277 INFO L78 Accepts]: Start accepts. Automaton has 707 states and 1133 transitions. Word has length 148 [2022-07-21 04:22:27,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:27,277 INFO L495 AbstractCegarLoop]: Abstraction has 707 states and 1133 transitions. [2022-07-21 04:22:27,278 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.2) internal successors, (96), 4 states have internal predecessors, (96), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-07-21 04:22:27,278 INFO L276 IsEmpty]: Start isEmpty. Operand 707 states and 1133 transitions. [2022-07-21 04:22:27,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2022-07-21 04:22:27,281 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:27,282 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1] [2022-07-21 04:22:27,309 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2022-07-21 04:22:27,507 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:27,507 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:27,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:27,508 INFO L85 PathProgramCache]: Analyzing trace with hash 1609352748, now seen corresponding path program 1 times [2022-07-21 04:22:27,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:27,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [16784178] [2022-07-21 04:22:27,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:27,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:27,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,612 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:27,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,626 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,631 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:27,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,660 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,662 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,815 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:27,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,834 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,847 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:27,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,849 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:27,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,853 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:27,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:27,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:27,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:27,865 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:22:27,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:27,865 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [16784178] [2022-07-21 04:22:27,865 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [16784178] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:27,866 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [4773924] [2022-07-21 04:22:27,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:27,866 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:27,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:27,867 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:27,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2022-07-21 04:22:28,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:28,154 INFO L263 TraceCheckSpWp]: Trace formula consists of 1871 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:28,157 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:28,311 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 04:22:28,311 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:28,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [4773924] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:28,312 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:28,312 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 10 [2022-07-21 04:22:28,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289136766] [2022-07-21 04:22:28,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:28,313 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:28,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:28,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:28,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:28,313 INFO L87 Difference]: Start difference. First operand 707 states and 1133 transitions. Second operand has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:22:28,638 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:28,638 INFO L93 Difference]: Finished difference Result 756 states and 1205 transitions. [2022-07-21 04:22:28,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:28,640 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) Word has length 150 [2022-07-21 04:22:28,642 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:28,647 INFO L225 Difference]: With dead ends: 756 [2022-07-21 04:22:28,647 INFO L226 Difference]: Without dead ends: 741 [2022-07-21 04:22:28,648 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 187 GetRequests, 179 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:28,652 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 866 mSDsluCounter, 710 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1612 SdHoareTripleChecker+Invalid, 221 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:28,653 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1612 Invalid, 221 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 04:22:28,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 741 states. [2022-07-21 04:22:28,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 741 to 710. [2022-07-21 04:22:28,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6204506065857887) internal successors, (935), 600 states have internal predecessors, (935), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-21 04:22:28,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1136 transitions. [2022-07-21 04:22:28,712 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1136 transitions. Word has length 150 [2022-07-21 04:22:28,712 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:28,712 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1136 transitions. [2022-07-21 04:22:28,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.0) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 1 states have call successors, (15) [2022-07-21 04:22:28,713 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1136 transitions. [2022-07-21 04:22:28,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2022-07-21 04:22:28,717 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:28,717 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:28,746 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:28,934 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:28,934 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:28,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:28,934 INFO L85 PathProgramCache]: Analyzing trace with hash -1229850585, now seen corresponding path program 1 times [2022-07-21 04:22:28,934 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:28,934 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275064958] [2022-07-21 04:22:28,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:28,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:28,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:29,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:29,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:29,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:29,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:29,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,227 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,239 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:29,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:29,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,244 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,245 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:29,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:29,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:29,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:29,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,258 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2022-07-21 04:22:29,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:29,258 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275064958] [2022-07-21 04:22:29,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275064958] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:29,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231134590] [2022-07-21 04:22:29,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:29,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:29,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:29,260 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:29,262 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2022-07-21 04:22:29,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:29,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 1887 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:22:29,581 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:29,612 INFO L134 CoverageAnalysis]: Checked inductivity of 34 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 04:22:29,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:29,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231134590] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:29,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:29,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 10 [2022-07-21 04:22:29,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380093186] [2022-07-21 04:22:29,614 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:29,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:29,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:29,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:29,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:29,615 INFO L87 Difference]: Start difference. First operand 710 states and 1136 transitions. Second operand has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 04:22:29,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:29,642 INFO L93 Difference]: Finished difference Result 727 states and 1157 transitions. [2022-07-21 04:22:29,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 04:22:29,643 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 156 [2022-07-21 04:22:29,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:29,646 INFO L225 Difference]: With dead ends: 727 [2022-07-21 04:22:29,647 INFO L226 Difference]: Without dead ends: 712 [2022-07-21 04:22:29,647 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 196 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-21 04:22:29,648 INFO L413 NwaCegarLoop]: 907 mSDtfsCounter, 37 mSDsluCounter, 2671 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3578 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:29,649 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3578 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:29,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 712 states. [2022-07-21 04:22:29,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 712 to 710. [2022-07-21 04:22:29,682 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 710 states, 577 states have (on average 1.6187175043327557) internal successors, (934), 600 states have internal predecessors, (934), 99 states have call successors, (99), 30 states have call predecessors, (99), 33 states have return successors, (102), 92 states have call predecessors, (102), 94 states have call successors, (102) [2022-07-21 04:22:29,685 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 710 states to 710 states and 1135 transitions. [2022-07-21 04:22:29,686 INFO L78 Accepts]: Start accepts. Automaton has 710 states and 1135 transitions. Word has length 156 [2022-07-21 04:22:29,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:29,688 INFO L495 AbstractCegarLoop]: Abstraction has 710 states and 1135 transitions. [2022-07-21 04:22:29,688 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.8) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-07-21 04:22:29,688 INFO L276 IsEmpty]: Start isEmpty. Operand 710 states and 1135 transitions. [2022-07-21 04:22:29,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-07-21 04:22:29,691 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:29,692 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:29,726 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:29,913 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:29,913 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:29,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:29,913 INFO L85 PathProgramCache]: Analyzing trace with hash -392192306, now seen corresponding path program 1 times [2022-07-21 04:22:29,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:29,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183364646] [2022-07-21 04:22:29,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:29,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:29,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,036 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:30,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:30,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,066 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2022-07-21 04:22:30,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:30,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,218 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:22:30,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,242 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,252 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,255 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:30,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:30,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:30,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:30,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:30,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,290 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:30,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,292 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 04:22:30,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:30,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183364646] [2022-07-21 04:22:30,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183364646] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:30,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [110347279] [2022-07-21 04:22:30,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:30,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:30,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:30,294 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:30,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2022-07-21 04:22:30,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:30,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 1924 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:22:30,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:30,612 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:22:30,613 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:30,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [110347279] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:30,613 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:30,613 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [7] total 9 [2022-07-21 04:22:30,613 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [911719026] [2022-07-21 04:22:30,613 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:30,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:30,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:30,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:30,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:22:30,615 INFO L87 Difference]: Start difference. First operand 710 states and 1135 transitions. Second operand has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:30,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:30,669 INFO L93 Difference]: Finished difference Result 1394 states and 2240 transitions. [2022-07-21 04:22:30,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:30,670 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) Word has length 167 [2022-07-21 04:22:30,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:30,675 INFO L225 Difference]: With dead ends: 1394 [2022-07-21 04:22:30,675 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 04:22:30,678 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 209 GetRequests, 201 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:22:30,679 INFO L413 NwaCegarLoop]: 895 mSDtfsCounter, 11 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2676 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:30,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2676 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:30,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 04:22:30,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 679. [2022-07-21 04:22:30,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 679 states, 549 states have (on average 1.6174863387978142) internal successors, (888), 570 states have internal predecessors, (888), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-21 04:22:30,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 679 states to 679 states and 1085 transitions. [2022-07-21 04:22:30,710 INFO L78 Accepts]: Start accepts. Automaton has 679 states and 1085 transitions. Word has length 167 [2022-07-21 04:22:30,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:30,710 INFO L495 AbstractCegarLoop]: Abstraction has 679 states and 1085 transitions. [2022-07-21 04:22:30,713 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 27.25) internal successors, (109), 4 states have internal predecessors, (109), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 1 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:30,714 INFO L276 IsEmpty]: Start isEmpty. Operand 679 states and 1085 transitions. [2022-07-21 04:22:30,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2022-07-21 04:22:30,716 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:30,717 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:30,744 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:30,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2022-07-21 04:22:30,931 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:30,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:30,932 INFO L85 PathProgramCache]: Analyzing trace with hash 616808057, now seen corresponding path program 1 times [2022-07-21 04:22:30,932 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:30,932 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [509088773] [2022-07-21 04:22:30,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:30,932 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:30,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:31,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,083 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:31,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,102 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 39 [2022-07-21 04:22:31,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:31,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,253 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 67 [2022-07-21 04:22:31,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,283 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:31,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:31,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,289 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:31,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:31,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,300 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:31,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,301 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,302 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:31,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,303 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2022-07-21 04:22:31,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [509088773] [2022-07-21 04:22:31,304 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [509088773] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:31,304 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1226831106] [2022-07-21 04:22:31,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:31,305 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:31,305 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:31,306 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:31,335 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2022-07-21 04:22:31,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:31,601 INFO L263 TraceCheckSpWp]: Trace formula consists of 1927 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 04:22:31,603 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:31,673 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:31,674 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:31,674 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1226831106] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:31,674 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:31,674 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 12 [2022-07-21 04:22:31,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594199455] [2022-07-21 04:22:31,674 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:31,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:31,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:31,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:31,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:22:31,676 INFO L87 Difference]: Start difference. First operand 679 states and 1085 transitions. Second operand has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:22:31,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:31,751 INFO L93 Difference]: Finished difference Result 1327 states and 2134 transitions. [2022-07-21 04:22:31,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:22:31,752 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) Word has length 169 [2022-07-21 04:22:31,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:31,756 INFO L225 Difference]: With dead ends: 1327 [2022-07-21 04:22:31,756 INFO L226 Difference]: Without dead ends: 679 [2022-07-21 04:22:31,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 211 GetRequests, 200 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:22:31,759 INFO L413 NwaCegarLoop]: 913 mSDtfsCounter, 143 mSDsluCounter, 4390 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 144 SdHoareTripleChecker+Valid, 5303 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:31,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [144 Valid, 5303 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:31,760 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 679 states. [2022-07-21 04:22:31,776 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 679 to 658. [2022-07-21 04:22:31,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.6174242424242424) internal successors, (854), 549 states have internal predecessors, (854), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-21 04:22:31,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1051 transitions. [2022-07-21 04:22:31,779 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1051 transitions. Word has length 169 [2022-07-21 04:22:31,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:31,780 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1051 transitions. [2022-07-21 04:22:31,780 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 19.666666666666668) internal successors, (118), 6 states have internal predecessors, (118), 3 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 3 states have call successors, (17) [2022-07-21 04:22:31,780 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1051 transitions. [2022-07-21 04:22:31,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-07-21 04:22:31,783 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:31,783 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:31,810 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:31,999 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2022-07-21 04:22:31,999 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:32,000 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:32,000 INFO L85 PathProgramCache]: Analyzing trace with hash -1646008076, now seen corresponding path program 1 times [2022-07-21 04:22:32,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:32,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1109002661] [2022-07-21 04:22:32,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:32,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:32,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:32,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,143 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:32,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2022-07-21 04:22:32,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,168 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:32,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2022-07-21 04:22:32,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,423 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:32,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:32,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,467 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,472 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:32,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:32,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,495 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:32,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:32,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,498 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:32,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,503 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:22:32,504 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:32,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1109002661] [2022-07-21 04:22:32,504 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1109002661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:32,504 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2050066] [2022-07-21 04:22:32,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:32,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:32,505 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:32,508 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:32,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2022-07-21 04:22:32,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:32,791 INFO L263 TraceCheckSpWp]: Trace formula consists of 1933 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:32,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:32,838 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 18 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2022-07-21 04:22:32,839 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:32,839 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2050066] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:32,839 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:32,839 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-07-21 04:22:32,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576068365] [2022-07-21 04:22:32,840 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:32,840 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:32,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:32,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:32,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:22:32,841 INFO L87 Difference]: Start difference. First operand 658 states and 1051 transitions. Second operand has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:32,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:32,931 INFO L93 Difference]: Finished difference Result 1285 states and 2068 transitions. [2022-07-21 04:22:32,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:32,932 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 171 [2022-07-21 04:22:32,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:32,935 INFO L225 Difference]: With dead ends: 1285 [2022-07-21 04:22:32,936 INFO L226 Difference]: Without dead ends: 658 [2022-07-21 04:22:32,938 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 225 GetRequests, 208 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:22:32,938 INFO L413 NwaCegarLoop]: 854 mSDtfsCounter, 176 mSDsluCounter, 1655 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 2509 SdHoareTripleChecker+Invalid, 79 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:32,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 2509 Invalid, 79 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 04:22:32,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 658 states. [2022-07-21 04:22:32,955 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 658 to 658. [2022-07-21 04:22:32,956 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 658 states, 528 states have (on average 1.615530303030303) internal successors, (853), 549 states have internal predecessors, (853), 98 states have call successors, (98), 30 states have call predecessors, (98), 31 states have return successors, (99), 91 states have call predecessors, (99), 93 states have call successors, (99) [2022-07-21 04:22:32,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 658 states to 658 states and 1050 transitions. [2022-07-21 04:22:32,959 INFO L78 Accepts]: Start accepts. Automaton has 658 states and 1050 transitions. Word has length 171 [2022-07-21 04:22:32,959 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:32,959 INFO L495 AbstractCegarLoop]: Abstraction has 658 states and 1050 transitions. [2022-07-21 04:22:32,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.0) internal successors, (120), 4 states have internal predecessors, (120), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:32,960 INFO L276 IsEmpty]: Start isEmpty. Operand 658 states and 1050 transitions. [2022-07-21 04:22:32,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 173 [2022-07-21 04:22:32,962 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:32,962 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:32,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:33,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable26 [2022-07-21 04:22:33,175 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:33,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:33,176 INFO L85 PathProgramCache]: Analyzing trace with hash 495722115, now seen corresponding path program 1 times [2022-07-21 04:22:33,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:33,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279216500] [2022-07-21 04:22:33,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:33,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:33,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,307 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,313 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,318 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:33,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:33,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 70 [2022-07-21 04:22:33,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,591 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:33,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:33,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,628 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,633 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:33,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:33,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:33,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:33,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:33,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,657 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-07-21 04:22:33,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279216500] [2022-07-21 04:22:33,657 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279216500] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:33,657 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1974432767] [2022-07-21 04:22:33,658 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:33,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:33,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:33,660 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:33,684 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2022-07-21 04:22:33,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:33,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:22:33,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:34,007 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2022-07-21 04:22:34,007 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:34,007 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1974432767] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:34,007 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:34,007 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 16 [2022-07-21 04:22:34,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [724488779] [2022-07-21 04:22:34,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:34,008 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:34,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:34,008 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:34,008 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2022-07-21 04:22:34,008 INFO L87 Difference]: Start difference. First operand 658 states and 1050 transitions. Second operand has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:34,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:34,058 INFO L93 Difference]: Finished difference Result 1244 states and 2013 transitions. [2022-07-21 04:22:34,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 04:22:34,059 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 172 [2022-07-21 04:22:34,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:34,063 INFO L225 Difference]: With dead ends: 1244 [2022-07-21 04:22:34,063 INFO L226 Difference]: Without dead ends: 618 [2022-07-21 04:22:34,065 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 227 GetRequests, 212 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:22:34,066 INFO L413 NwaCegarLoop]: 893 mSDtfsCounter, 13 mSDsluCounter, 1781 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2674 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:34,066 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2674 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:34,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 618 states. [2022-07-21 04:22:34,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 618 to 618. [2022-07-21 04:22:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6089613034623218) internal successors, (790), 510 states have internal predecessors, (790), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-21 04:22:34,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 983 transitions. [2022-07-21 04:22:34,086 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 983 transitions. Word has length 172 [2022-07-21 04:22:34,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:34,086 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 983 transitions. [2022-07-21 04:22:34,086 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 30.25) internal successors, (121), 4 states have internal predecessors, (121), 2 states have call successors, (18), 2 states have call predecessors, (18), 3 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:34,087 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 983 transitions. [2022-07-21 04:22:34,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 174 [2022-07-21 04:22:34,089 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:34,089 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:34,120 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:34,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2022-07-21 04:22:34,311 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:34,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:34,312 INFO L85 PathProgramCache]: Analyzing trace with hash 1965948772, now seen corresponding path program 1 times [2022-07-21 04:22:34,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:34,312 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1933347935] [2022-07-21 04:22:34,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:34,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:34,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:34,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,450 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:34,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:34,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,462 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,464 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:34,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,602 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2022-07-21 04:22:34,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,688 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:34,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,730 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:34,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,747 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:34,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:34,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:34,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:34,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:34,752 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 4 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2022-07-21 04:22:34,752 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1933347935] [2022-07-21 04:22:34,753 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1933347935] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:34,753 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1022339351] [2022-07-21 04:22:34,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:34,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:34,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:34,756 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:34,762 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2022-07-21 04:22:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 1932 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 04:22:35,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:35,068 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2022-07-21 04:22:35,068 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:35,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1022339351] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:35,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:35,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [16] total 18 [2022-07-21 04:22:35,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [443228900] [2022-07-21 04:22:35,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:35,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 04:22:35,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:35,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 04:22:35,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2022-07-21 04:22:35,071 INFO L87 Difference]: Start difference. First operand 618 states and 983 transitions. Second operand has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:35,142 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:35,142 INFO L93 Difference]: Finished difference Result 1205 states and 1934 transitions. [2022-07-21 04:22:35,143 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-21 04:22:35,143 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 173 [2022-07-21 04:22:35,143 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:35,146 INFO L225 Difference]: With dead ends: 1205 [2022-07-21 04:22:35,146 INFO L226 Difference]: Without dead ends: 636 [2022-07-21 04:22:35,147 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 230 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:22:35,148 INFO L413 NwaCegarLoop]: 869 mSDtfsCounter, 36 mSDsluCounter, 1733 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 2602 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:35,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 2602 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:35,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 636 states. [2022-07-21 04:22:35,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 636 to 621. [2022-07-21 04:22:35,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 621 states, 494 states have (on average 1.6072874493927125) internal successors, (794), 513 states have internal predecessors, (794), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-21 04:22:35,167 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 987 transitions. [2022-07-21 04:22:35,168 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 987 transitions. Word has length 173 [2022-07-21 04:22:35,168 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:35,168 INFO L495 AbstractCegarLoop]: Abstraction has 621 states and 987 transitions. [2022-07-21 04:22:35,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 29.0) internal successors, (116), 4 states have internal predecessors, (116), 2 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:35,169 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 987 transitions. [2022-07-21 04:22:35,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-21 04:22:35,171 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:35,172 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:35,193 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2022-07-21 04:22:35,379 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2022-07-21 04:22:35,380 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:35,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:35,380 INFO L85 PathProgramCache]: Analyzing trace with hash 661057393, now seen corresponding path program 1 times [2022-07-21 04:22:35,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:35,380 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149437849] [2022-07-21 04:22:35,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:35,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:35,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:35,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,515 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,517 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:35,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,520 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:35,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,531 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:35,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:22:35,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,700 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:35,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:35,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,706 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:35,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,722 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:35,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:35,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,727 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:35,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:35,729 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2022-07-21 04:22:35,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:35,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149437849] [2022-07-21 04:22:35,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149437849] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:35,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:22:35,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:22:35,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904281812] [2022-07-21 04:22:35,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:35,730 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:35,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:35,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:35,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:22:35,731 INFO L87 Difference]: Start difference. First operand 621 states and 987 transitions. Second operand has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:40,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:40,558 INFO L93 Difference]: Finished difference Result 1491 states and 2438 transitions. [2022-07-21 04:22:40,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 04:22:40,559 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-07-21 04:22:40,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:40,563 INFO L225 Difference]: With dead ends: 1491 [2022-07-21 04:22:40,563 INFO L226 Difference]: Without dead ends: 916 [2022-07-21 04:22:40,564 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 42 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2022-07-21 04:22:40,565 INFO L413 NwaCegarLoop]: 902 mSDtfsCounter, 1007 mSDsluCounter, 1379 mSDsCounter, 0 mSdLazyCounter, 2644 mSolverCounterSat, 266 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1087 SdHoareTripleChecker+Valid, 2281 SdHoareTripleChecker+Invalid, 2910 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 266 IncrementalHoareTripleChecker+Valid, 2644 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.3s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:40,565 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1087 Valid, 2281 Invalid, 2910 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [266 Valid, 2644 Invalid, 0 Unknown, 0 Unchecked, 4.3s Time] [2022-07-21 04:22:40,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 916 states. [2022-07-21 04:22:40,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 916 to 618. [2022-07-21 04:22:40,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 618 states, 491 states have (on average 1.6069246435845215) internal successors, (789), 510 states have internal predecessors, (789), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-21 04:22:40,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 618 states to 618 states and 982 transitions. [2022-07-21 04:22:40,622 INFO L78 Accepts]: Start accepts. Automaton has 618 states and 982 transitions. Word has length 174 [2022-07-21 04:22:40,622 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:40,622 INFO L495 AbstractCegarLoop]: Abstraction has 618 states and 982 transitions. [2022-07-21 04:22:40,622 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.857142857142858) internal successors, (118), 4 states have internal predecessors, (118), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:40,622 INFO L276 IsEmpty]: Start isEmpty. Operand 618 states and 982 transitions. [2022-07-21 04:22:40,625 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-07-21 04:22:40,625 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:40,625 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:40,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2022-07-21 04:22:40,626 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:40,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:40,626 INFO L85 PathProgramCache]: Analyzing trace with hash 1150689779, now seen corresponding path program 1 times [2022-07-21 04:22:40,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:40,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [783761412] [2022-07-21 04:22:40,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:40,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:40,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,744 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:40,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,749 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,750 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:40,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,753 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:40,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,889 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:22:40,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,907 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,922 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:40,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:40,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:40,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,938 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:40,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,939 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:40,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:40,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:40,942 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2022-07-21 04:22:40,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:40,943 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [783761412] [2022-07-21 04:22:40,943 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [783761412] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:40,943 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:22:40,943 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:22:40,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1815643051] [2022-07-21 04:22:40,944 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:40,944 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:40,944 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:40,945 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:40,945 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:22:40,945 INFO L87 Difference]: Start difference. First operand 618 states and 982 transitions. Second operand has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:45,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:45,725 INFO L93 Difference]: Finished difference Result 1536 states and 2499 transitions. [2022-07-21 04:22:45,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:22:45,725 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) Word has length 174 [2022-07-21 04:22:45,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:45,730 INFO L225 Difference]: With dead ends: 1536 [2022-07-21 04:22:45,730 INFO L226 Difference]: Without dead ends: 961 [2022-07-21 04:22:45,732 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 56 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:22:45,732 INFO L413 NwaCegarLoop]: 915 mSDtfsCounter, 1046 mSDsluCounter, 1393 mSDsCounter, 0 mSdLazyCounter, 2722 mSolverCounterSat, 267 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1126 SdHoareTripleChecker+Valid, 2308 SdHoareTripleChecker+Invalid, 2989 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 267 IncrementalHoareTripleChecker+Valid, 2722 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:45,732 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1126 Valid, 2308 Invalid, 2989 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [267 Valid, 2722 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:22:45,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 961 states. [2022-07-21 04:22:45,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 961 to 622. [2022-07-21 04:22:45,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 622 states, 495 states have (on average 1.6020202020202021) internal successors, (793), 514 states have internal predecessors, (793), 97 states have call successors, (97), 30 states have call predecessors, (97), 29 states have return successors, (96), 90 states have call predecessors, (96), 92 states have call successors, (96) [2022-07-21 04:22:45,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 622 states to 622 states and 986 transitions. [2022-07-21 04:22:45,817 INFO L78 Accepts]: Start accepts. Automaton has 622 states and 986 transitions. Word has length 174 [2022-07-21 04:22:45,817 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:45,818 INFO L495 AbstractCegarLoop]: Abstraction has 622 states and 986 transitions. [2022-07-21 04:22:45,818 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 16.714285714285715) internal successors, (117), 4 states have internal predecessors, (117), 2 states have call successors, (18), 5 states have call predecessors, (18), 2 states have return successors, (17), 2 states have call predecessors, (17), 2 states have call successors, (17) [2022-07-21 04:22:45,818 INFO L276 IsEmpty]: Start isEmpty. Operand 622 states and 986 transitions. [2022-07-21 04:22:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2022-07-21 04:22:45,820 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:45,822 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:45,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2022-07-21 04:22:45,822 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:45,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:45,823 INFO L85 PathProgramCache]: Analyzing trace with hash 1838219517, now seen corresponding path program 1 times [2022-07-21 04:22:45,823 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:45,823 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147916980] [2022-07-21 04:22:45,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:45,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:45,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:45,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:45,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,011 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,022 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:46,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,032 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:46,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,199 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:22:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,219 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,281 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,298 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:46,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,329 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,334 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:46,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2022-07-21 04:22:46,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,355 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:46,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:22:46,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:46,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,360 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2022-07-21 04:22:46,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147916980] [2022-07-21 04:22:46,360 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147916980] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:46,360 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [660708078] [2022-07-21 04:22:46,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:46,361 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:46,361 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:46,362 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:46,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2022-07-21 04:22:46,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:46,620 INFO L263 TraceCheckSpWp]: Trace formula consists of 1938 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 04:22:46,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:46,866 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2022-07-21 04:22:46,866 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:46,866 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [660708078] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:46,866 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:46,866 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [16] total 22 [2022-07-21 04:22:46,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [888821578] [2022-07-21 04:22:46,866 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:46,867 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 04:22:46,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:46,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 04:22:46,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2022-07-21 04:22:46,868 INFO L87 Difference]: Start difference. First operand 622 states and 986 transitions. Second operand has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-21 04:22:49,347 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:49,347 INFO L93 Difference]: Finished difference Result 1969 states and 3229 transitions. [2022-07-21 04:22:49,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 04:22:49,348 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) Word has length 175 [2022-07-21 04:22:49,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:49,355 INFO L225 Difference]: With dead ends: 1969 [2022-07-21 04:22:49,355 INFO L226 Difference]: Without dead ends: 1466 [2022-07-21 04:22:49,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 213 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 118 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=141, Invalid=981, Unknown=0, NotChecked=0, Total=1122 [2022-07-21 04:22:49,358 INFO L413 NwaCegarLoop]: 1215 mSDtfsCounter, 2971 mSDsluCounter, 2316 mSDsCounter, 0 mSdLazyCounter, 3912 mSolverCounterSat, 612 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3049 SdHoareTripleChecker+Valid, 3531 SdHoareTripleChecker+Invalid, 4524 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 612 IncrementalHoareTripleChecker+Valid, 3912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:49,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3049 Valid, 3531 Invalid, 4524 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [612 Valid, 3912 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-07-21 04:22:49,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1466 states. [2022-07-21 04:22:49,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1466 to 1345. [2022-07-21 04:22:49,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1345 states, 1064 states have (on average 1.6409774436090225) internal successors, (1746), 1103 states have internal predecessors, (1746), 213 states have call successors, (213), 62 states have call predecessors, (213), 67 states have return successors, (232), 205 states have call predecessors, (232), 208 states have call successors, (232) [2022-07-21 04:22:49,509 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1345 states to 1345 states and 2191 transitions. [2022-07-21 04:22:49,509 INFO L78 Accepts]: Start accepts. Automaton has 1345 states and 2191 transitions. Word has length 175 [2022-07-21 04:22:49,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:49,512 INFO L495 AbstractCegarLoop]: Abstraction has 1345 states and 2191 transitions. [2022-07-21 04:22:49,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 14.0) internal successors, (112), 8 states have internal predecessors, (112), 6 states have call successors, (18), 4 states have call predecessors, (18), 4 states have return successors, (17), 6 states have call predecessors, (17), 5 states have call successors, (17) [2022-07-21 04:22:49,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1345 states and 2191 transitions. [2022-07-21 04:22:49,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-07-21 04:22:49,514 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:49,514 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:49,533 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2022-07-21 04:22:49,715 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable31 [2022-07-21 04:22:49,715 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:49,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:49,716 INFO L85 PathProgramCache]: Analyzing trace with hash 5244925, now seen corresponding path program 1 times [2022-07-21 04:22:49,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:49,716 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [82515260] [2022-07-21 04:22:49,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:49,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:49,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,836 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:49,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,863 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:49,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,866 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:49,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:49,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,892 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:49,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:49,894 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:49,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:22:50,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,059 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:50,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:50,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,154 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:50,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,171 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:50,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,175 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:50,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,176 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:22:50,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,204 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2022-07-21 04:22:50,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,207 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2022-07-21 04:22:50,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,209 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2022-07-21 04:22:50,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,211 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2022-07-21 04:22:50,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:50,211 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [82515260] [2022-07-21 04:22:50,211 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [82515260] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:50,212 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408035642] [2022-07-21 04:22:50,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:50,213 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:50,213 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:50,214 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:50,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2022-07-21 04:22:50,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:50,463 INFO L263 TraceCheckSpWp]: Trace formula consists of 1934 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-21 04:22:50,467 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:50,686 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 04:22:50,686 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:50,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408035642] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:50,687 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:50,687 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [16] total 21 [2022-07-21 04:22:50,687 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [674365672] [2022-07-21 04:22:50,687 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:50,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:22:50,688 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:50,688 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:22:50,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=370, Unknown=0, NotChecked=0, Total=420 [2022-07-21 04:22:50,688 INFO L87 Difference]: Start difference. First operand 1345 states and 2191 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 04:22:52,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:52,795 INFO L93 Difference]: Finished difference Result 2830 states and 4656 transitions. [2022-07-21 04:22:52,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-07-21 04:22:52,796 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 177 [2022-07-21 04:22:52,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:52,803 INFO L225 Difference]: With dead ends: 2830 [2022-07-21 04:22:52,803 INFO L226 Difference]: Without dead ends: 1604 [2022-07-21 04:22:52,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 245 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=102, Invalid=828, Unknown=0, NotChecked=0, Total=930 [2022-07-21 04:22:52,808 INFO L413 NwaCegarLoop]: 1015 mSDtfsCounter, 2117 mSDsluCounter, 1561 mSDsCounter, 0 mSdLazyCounter, 3286 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2199 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 3782 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 3286 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:52,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2199 Valid, 2576 Invalid, 3782 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 3286 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-07-21 04:22:52,809 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1604 states. [2022-07-21 04:22:52,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1604 to 1416. [2022-07-21 04:22:52,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1416 states, 1116 states have (on average 1.6290322580645162) internal successors, (1818), 1161 states have internal predecessors, (1818), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-07-21 04:22:52,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1416 states to 1416 states and 2297 transitions. [2022-07-21 04:22:52,956 INFO L78 Accepts]: Start accepts. Automaton has 1416 states and 2297 transitions. Word has length 177 [2022-07-21 04:22:52,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:52,957 INFO L495 AbstractCegarLoop]: Abstraction has 1416 states and 2297 transitions. [2022-07-21 04:22:52,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 5 states have call successors, (19), 4 states have call predecessors, (19), 4 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-07-21 04:22:52,957 INFO L276 IsEmpty]: Start isEmpty. Operand 1416 states and 2297 transitions. [2022-07-21 04:22:52,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 183 [2022-07-21 04:22:52,960 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:52,960 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:52,990 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:53,175 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32,32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:53,176 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:53,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:53,176 INFO L85 PathProgramCache]: Analyzing trace with hash 354987505, now seen corresponding path program 1 times [2022-07-21 04:22:53,176 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:53,176 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [472519157] [2022-07-21 04:22:53,176 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:53,176 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:53,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,348 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,351 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:53,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:53,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:53,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,534 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:22:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,652 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:53,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:53,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,658 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,659 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:53,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,661 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:53,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:22:53,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,680 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:22:53,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:22:53,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,683 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:53,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,685 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:22:53,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,686 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 41 trivial. 0 not checked. [2022-07-21 04:22:53,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:53,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [472519157] [2022-07-21 04:22:53,687 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [472519157] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:53,687 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1970443353] [2022-07-21 04:22:53,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:53,687 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:53,688 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:53,689 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:53,690 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2022-07-21 04:22:53,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:53,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 1950 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-21 04:22:53,948 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:53,997 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-07-21 04:22:53,998 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:53,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1970443353] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:53,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:53,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [14] total 17 [2022-07-21 04:22:53,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1248295803] [2022-07-21 04:22:53,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:53,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 04:22:53,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:54,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 04:22:54,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=232, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:22:54,000 INFO L87 Difference]: Start difference. First operand 1416 states and 2297 transitions. Second operand has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 04:22:54,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:54,157 INFO L93 Difference]: Finished difference Result 1515 states and 2442 transitions. [2022-07-21 04:22:54,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 04:22:54,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 182 [2022-07-21 04:22:54,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:54,167 INFO L225 Difference]: With dead ends: 1515 [2022-07-21 04:22:54,168 INFO L226 Difference]: Without dead ends: 1500 [2022-07-21 04:22:54,169 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 238 GetRequests, 220 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 54 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=325, Unknown=0, NotChecked=0, Total=380 [2022-07-21 04:22:54,170 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 67 mSDsluCounter, 2719 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 3648 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:54,170 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 3648 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:54,171 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1500 states. [2022-07-21 04:22:54,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1500 to 1422. [2022-07-21 04:22:54,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1422 states, 1122 states have (on average 1.625668449197861) internal successors, (1824), 1167 states have internal predecessors, (1824), 221 states have call successors, (221), 67 states have call predecessors, (221), 78 states have return successors, (258), 213 states have call predecessors, (258), 216 states have call successors, (258) [2022-07-21 04:22:54,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1422 states to 1422 states and 2303 transitions. [2022-07-21 04:22:54,340 INFO L78 Accepts]: Start accepts. Automaton has 1422 states and 2303 transitions. Word has length 182 [2022-07-21 04:22:54,341 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:54,341 INFO L495 AbstractCegarLoop]: Abstraction has 1422 states and 2303 transitions. [2022-07-21 04:22:54,341 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 22.6) internal successors, (113), 5 states have internal predecessors, (113), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-07-21 04:22:54,341 INFO L276 IsEmpty]: Start isEmpty. Operand 1422 states and 2303 transitions. [2022-07-21 04:22:54,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 276 [2022-07-21 04:22:54,345 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:54,346 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:54,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:54,547 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:54,548 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:54,548 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:54,548 INFO L85 PathProgramCache]: Analyzing trace with hash 488834352, now seen corresponding path program 1 times [2022-07-21 04:22:54,548 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:54,548 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1183686719] [2022-07-21 04:22:54,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:54,549 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:54,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:54,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:54,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,740 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:54,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,748 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:54,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,765 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:54,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,767 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:54,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,912 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:22:54,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:54,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:55,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:55,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,027 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:55,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:22:55,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,042 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:22:55,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,043 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:22:55,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,044 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:55,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:22:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,047 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:22:55,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,089 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,092 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,093 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:55,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,112 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:22:55,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,116 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:55,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:55,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:55,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,122 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:22:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,123 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:22:55,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,124 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:22:55,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,126 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 15 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-21 04:22:55,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1183686719] [2022-07-21 04:22:55,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1183686719] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:55,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2130056886] [2022-07-21 04:22:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:55,127 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:55,128 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:55,132 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:55,136 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2022-07-21 04:22:55,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:55,434 INFO L263 TraceCheckSpWp]: Trace formula consists of 2422 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-21 04:22:55,438 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:55,468 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 196 trivial. 0 not checked. [2022-07-21 04:22:55,468 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 04:22:55,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2130056886] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:22:55,468 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 04:22:55,468 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [18] total 19 [2022-07-21 04:22:55,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1985578625] [2022-07-21 04:22:55,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:22:55,469 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 04:22:55,469 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:55,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 04:22:55,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:22:55,470 INFO L87 Difference]: Start difference. First operand 1422 states and 2303 transitions. Second operand has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-21 04:22:55,648 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:22:55,648 INFO L93 Difference]: Finished difference Result 2709 states and 4434 transitions. [2022-07-21 04:22:55,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 04:22:55,649 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) Word has length 275 [2022-07-21 04:22:55,649 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:22:55,654 INFO L225 Difference]: With dead ends: 2709 [2022-07-21 04:22:55,655 INFO L226 Difference]: Without dead ends: 1406 [2022-07-21 04:22:55,658 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 362 GetRequests, 345 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=299, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:22:55,659 INFO L413 NwaCegarLoop]: 877 mSDtfsCounter, 867 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 2 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 867 SdHoareTripleChecker+Valid, 877 SdHoareTripleChecker+Invalid, 5 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 2 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 04:22:55,659 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [867 Valid, 877 Invalid, 5 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 2 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 04:22:55,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1406 states. [2022-07-21 04:22:55,757 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1406 to 1406. [2022-07-21 04:22:55,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1406 states, 1112 states have (on average 1.6214028776978417) internal successors, (1803), 1156 states have internal predecessors, (1803), 215 states have call successors, (215), 67 states have call predecessors, (215), 78 states have return successors, (253), 208 states have call predecessors, (253), 211 states have call successors, (253) [2022-07-21 04:22:55,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1406 states to 1406 states and 2271 transitions. [2022-07-21 04:22:55,764 INFO L78 Accepts]: Start accepts. Automaton has 1406 states and 2271 transitions. Word has length 275 [2022-07-21 04:22:55,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:22:55,766 INFO L495 AbstractCegarLoop]: Abstraction has 1406 states and 2271 transitions. [2022-07-21 04:22:55,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 43.666666666666664) internal successors, (131), 3 states have internal predecessors, (131), 2 states have call successors, (24), 2 states have call predecessors, (24), 2 states have return successors, (23), 2 states have call predecessors, (23), 1 states have call successors, (23) [2022-07-21 04:22:55,766 INFO L276 IsEmpty]: Start isEmpty. Operand 1406 states and 2271 transitions. [2022-07-21 04:22:55,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 274 [2022-07-21 04:22:55,770 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:22:55,770 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:22:55,797 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Forceful destruction successful, exit code 0 [2022-07-21 04:22:55,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2022-07-21 04:22:55,995 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:22:55,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:22:55,996 INFO L85 PathProgramCache]: Analyzing trace with hash -259599323, now seen corresponding path program 1 times [2022-07-21 04:22:55,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:22:55,996 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [121203659] [2022-07-21 04:22:55,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:55,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:22:56,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:22:56,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,179 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,183 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:22:56,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,191 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:22:56,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,206 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,212 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:22:56,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:22:56,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,465 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,480 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:56,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:22:56,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:56,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,502 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:22:56,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:22:56,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,506 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:22:56,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,508 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:22:56,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:22:56,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,511 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:22:56,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,558 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,560 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:56,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,578 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2022-07-21 04:22:56,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,585 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:22:56,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:22:56,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,587 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2022-07-21 04:22:56,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,589 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:22:56,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,590 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:22:56,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:56,635 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 19 proven. 23 refuted. 0 times theorem prover too weak. 164 trivial. 0 not checked. [2022-07-21 04:22:56,635 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:22:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [121203659] [2022-07-21 04:22:56,635 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [121203659] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:22:56,635 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1396062453] [2022-07-21 04:22:56,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:22:56,636 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:22:56,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:22:56,638 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:22:56,640 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2022-07-21 04:22:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:22:57,018 INFO L263 TraceCheckSpWp]: Trace formula consists of 2409 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 04:22:57,023 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:22:57,192 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 33 proven. 88 refuted. 0 times theorem prover too weak. 85 trivial. 0 not checked. [2022-07-21 04:22:57,192 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:22:57,627 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 10 proven. 15 refuted. 0 times theorem prover too weak. 181 trivial. 0 not checked. [2022-07-21 04:22:57,627 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1396062453] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:22:57,627 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:22:57,628 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 5, 5] total 22 [2022-07-21 04:22:57,628 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2005438877] [2022-07-21 04:22:57,628 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:22:57,629 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2022-07-21 04:22:57,629 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:22:57,629 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2022-07-21 04:22:57,629 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=408, Unknown=0, NotChecked=0, Total=462 [2022-07-21 04:22:57,630 INFO L87 Difference]: Start difference. First operand 1406 states and 2271 transitions. Second operand has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-07-21 04:23:35,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:23:35,709 INFO L93 Difference]: Finished difference Result 10671 states and 19050 transitions. [2022-07-21 04:23:35,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 110 states. [2022-07-21 04:23:35,710 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) Word has length 273 [2022-07-21 04:23:35,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:23:35,770 INFO L225 Difference]: With dead ends: 10671 [2022-07-21 04:23:35,770 INFO L226 Difference]: Without dead ends: 9384 [2022-07-21 04:23:35,791 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 758 GetRequests, 630 SyntacticMatches, 2 SemanticMatches, 126 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5957 ImplicationChecksByTransitivity, 9.7s TimeCoverageRelationStatistics Valid=2045, Invalid=14211, Unknown=0, NotChecked=0, Total=16256 [2022-07-21 04:23:35,792 INFO L413 NwaCegarLoop]: 2441 mSDtfsCounter, 13796 mSDsluCounter, 16226 mSDsCounter, 0 mSdLazyCounter, 39652 mSolverCounterSat, 7759 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13802 SdHoareTripleChecker+Valid, 18667 SdHoareTripleChecker+Invalid, 47411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 7759 IncrementalHoareTripleChecker+Valid, 39652 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.9s IncrementalHoareTripleChecker+Time [2022-07-21 04:23:35,792 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13802 Valid, 18667 Invalid, 47411 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [7759 Valid, 39652 Invalid, 0 Unknown, 0 Unchecked, 26.9s Time] [2022-07-21 04:23:35,801 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9384 states. [2022-07-21 04:23:36,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9384 to 5304. [2022-07-21 04:23:36,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5304 states, 4115 states have (on average 1.5939246658566222) internal successors, (6559), 4293 states have internal predecessors, (6559), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-21 04:23:36,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5304 states to 5304 states and 8699 transitions. [2022-07-21 04:23:36,564 INFO L78 Accepts]: Start accepts. Automaton has 5304 states and 8699 transitions. Word has length 273 [2022-07-21 04:23:36,565 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:23:36,565 INFO L495 AbstractCegarLoop]: Abstraction has 5304 states and 8699 transitions. [2022-07-21 04:23:36,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 12.363636363636363) internal successors, (272), 16 states have internal predecessors, (272), 9 states have call successors, (58), 8 states have call predecessors, (58), 10 states have return successors, (58), 13 states have call predecessors, (58), 9 states have call successors, (58) [2022-07-21 04:23:36,565 INFO L276 IsEmpty]: Start isEmpty. Operand 5304 states and 8699 transitions. [2022-07-21 04:23:36,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-21 04:23:36,578 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:23:36,578 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:23:36,609 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Forceful destruction successful, exit code 0 [2022-07-21 04:23:36,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2022-07-21 04:23:36,804 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:23:36,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:23:36,804 INFO L85 PathProgramCache]: Analyzing trace with hash 223686760, now seen corresponding path program 1 times [2022-07-21 04:23:36,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:23:36,804 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1818914140] [2022-07-21 04:23:36,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:23:36,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:23:36,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,937 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:23:36,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,944 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:36,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:23:36,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:23:36,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,956 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:36,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:36,958 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:23:36,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,091 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:37,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,222 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,230 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,235 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,236 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:37,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,237 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:23:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,240 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,247 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,257 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:23:37,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,259 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,260 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:23:37,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:23:37,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,262 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:23:37,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,264 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:23:37,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,275 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:37,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,277 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,278 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:23:37,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,285 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:37,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:23:37,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,287 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,288 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:37,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-21 04:23:37,291 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:23:37,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1818914140] [2022-07-21 04:23:37,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1818914140] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:23:37,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:23:37,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:23:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389224829] [2022-07-21 04:23:37,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:23:37,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:23:37,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:23:37,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:23:37,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:23:37,295 INFO L87 Difference]: Start difference. First operand 5304 states and 8699 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:42,197 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:23:42,197 INFO L93 Difference]: Finished difference Result 11536 states and 19243 transitions. [2022-07-21 04:23:42,198 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 04:23:42,198 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-07-21 04:23:42,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:23:42,226 INFO L225 Difference]: With dead ends: 11536 [2022-07-21 04:23:42,226 INFO L226 Difference]: Without dead ends: 6389 [2022-07-21 04:23:42,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 80 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2022-07-21 04:23:42,244 INFO L413 NwaCegarLoop]: 969 mSDtfsCounter, 932 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2746 mSolverCounterSat, 251 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1010 SdHoareTripleChecker+Valid, 2375 SdHoareTripleChecker+Invalid, 2997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 251 IncrementalHoareTripleChecker+Valid, 2746 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:23:42,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1010 Valid, 2375 Invalid, 2997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [251 Valid, 2746 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-21 04:23:42,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6389 states. [2022-07-21 04:23:42,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6389 to 5316. [2022-07-21 04:23:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5316 states, 4127 states have (on average 1.5926823358371698) internal successors, (6573), 4305 states have internal predecessors, (6573), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-21 04:23:42,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5316 states to 5316 states and 8713 transitions. [2022-07-21 04:23:42,957 INFO L78 Accepts]: Start accepts. Automaton has 5316 states and 8713 transitions. Word has length 278 [2022-07-21 04:23:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:23:42,957 INFO L495 AbstractCegarLoop]: Abstraction has 5316 states and 8713 transitions. [2022-07-21 04:23:42,957 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 5316 states and 8713 transitions. [2022-07-21 04:23:42,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 279 [2022-07-21 04:23:42,967 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:23:42,967 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:23:42,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2022-07-21 04:23:42,967 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:23:42,968 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:23:42,968 INFO L85 PathProgramCache]: Analyzing trace with hash -288985978, now seen corresponding path program 1 times [2022-07-21 04:23:42,968 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:23:42,968 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [854825154] [2022-07-21 04:23:42,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:23:42,968 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:23:42,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:23:43,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,115 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:23:43,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,119 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:23:43,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,127 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,129 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:23:43,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,282 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:43,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,323 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,325 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:43,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:23:43,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,330 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,331 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,332 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:43,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,340 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:23:43,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,342 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:43,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:23:43,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,344 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:23:43,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:23:43,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:23:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,361 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,363 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:43,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,367 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:23:43,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,372 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:43,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,377 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:43,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:23:43,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,380 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:43,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:43,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-21 04:23:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:23:43,383 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [854825154] [2022-07-21 04:23:43,383 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [854825154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:23:43,384 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:23:43,384 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:23:43,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491354057] [2022-07-21 04:23:43,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:23:43,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:23:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:23:43,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:23:43,386 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:23:43,386 INFO L87 Difference]: Start difference. First operand 5316 states and 8713 transitions. Second operand has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:48,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:23:48,346 INFO L93 Difference]: Finished difference Result 11743 states and 19526 transitions. [2022-07-21 04:23:48,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:23:48,347 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 278 [2022-07-21 04:23:48,347 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:23:48,380 INFO L225 Difference]: With dead ends: 11743 [2022-07-21 04:23:48,381 INFO L226 Difference]: Without dead ends: 6470 [2022-07-21 04:23:48,399 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:23:48,400 INFO L413 NwaCegarLoop]: 927 mSDtfsCounter, 1423 mSDsluCounter, 1348 mSDsCounter, 0 mSdLazyCounter, 2588 mSolverCounterSat, 383 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1501 SdHoareTripleChecker+Valid, 2275 SdHoareTripleChecker+Invalid, 2971 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 383 IncrementalHoareTripleChecker+Valid, 2588 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-07-21 04:23:48,404 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1501 Valid, 2275 Invalid, 2971 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [383 Valid, 2588 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-07-21 04:23:48,410 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6470 states. [2022-07-21 04:23:49,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6470 to 5326. [2022-07-21 04:23:49,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5326 states, 4137 states have (on average 1.591007976794779) internal successors, (6582), 4315 states have internal predecessors, (6582), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-21 04:23:49,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5326 states to 5326 states and 8722 transitions. [2022-07-21 04:23:49,073 INFO L78 Accepts]: Start accepts. Automaton has 5326 states and 8722 transitions. Word has length 278 [2022-07-21 04:23:49,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:23:49,073 INFO L495 AbstractCegarLoop]: Abstraction has 5326 states and 8722 transitions. [2022-07-21 04:23:49,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.571428571428573) internal successors, (137), 4 states have internal predecessors, (137), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:49,074 INFO L276 IsEmpty]: Start isEmpty. Operand 5326 states and 8722 transitions. [2022-07-21 04:23:49,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-21 04:23:49,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:23:49,083 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:23:49,083 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2022-07-21 04:23:49,083 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:23:49,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:23:49,083 INFO L85 PathProgramCache]: Analyzing trace with hash -847728197, now seen corresponding path program 1 times [2022-07-21 04:23:49,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:23:49,083 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320327053] [2022-07-21 04:23:49,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:23:49,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:23:49,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,208 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:23:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,215 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:23:49,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,217 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:23:49,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,226 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:23:49,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,365 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:23:49,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,394 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,408 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:49,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:23:49,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,412 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,413 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,414 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:49,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,421 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:23:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,424 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:49,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,425 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:23:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,426 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:23:49,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:23:49,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,429 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:23:49,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,479 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:49,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:23:49,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:49,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:49,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,489 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:23:49,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,490 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:49,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,491 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:49,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:49,495 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-21 04:23:49,495 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:23:49,495 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320327053] [2022-07-21 04:23:49,495 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320327053] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:23:49,495 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:23:49,496 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:23:49,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249634723] [2022-07-21 04:23:49,496 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:23:49,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:23:49,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:23:49,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:23:49,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:23:49,497 INFO L87 Difference]: Start difference. First operand 5326 states and 8722 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:54,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:23:54,201 INFO L93 Difference]: Finished difference Result 11763 states and 19538 transitions. [2022-07-21 04:23:54,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:23:54,202 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-07-21 04:23:54,202 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:23:54,228 INFO L225 Difference]: With dead ends: 11763 [2022-07-21 04:23:54,228 INFO L226 Difference]: Without dead ends: 6480 [2022-07-21 04:23:54,245 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:23:54,245 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 1452 mSDsluCounter, 1321 mSDsCounter, 0 mSdLazyCounter, 2446 mSolverCounterSat, 387 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1530 SdHoareTripleChecker+Valid, 2250 SdHoareTripleChecker+Invalid, 2833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 387 IncrementalHoareTripleChecker+Valid, 2446 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:23:54,246 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1530 Valid, 2250 Invalid, 2833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [387 Valid, 2446 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-07-21 04:23:54,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6480 states. [2022-07-21 04:23:55,057 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6480 to 5338. [2022-07-21 04:23:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5338 states, 4149 states have (on average 1.589057604241986) internal successors, (6593), 4327 states have internal predecessors, (6593), 851 states have call successors, (851), 220 states have call predecessors, (851), 337 states have return successors, (1289), 848 states have call predecessors, (1289), 847 states have call successors, (1289) [2022-07-21 04:23:55,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5338 states to 5338 states and 8733 transitions. [2022-07-21 04:23:55,084 INFO L78 Accepts]: Start accepts. Automaton has 5338 states and 8733 transitions. Word has length 279 [2022-07-21 04:23:55,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:23:55,085 INFO L495 AbstractCegarLoop]: Abstraction has 5338 states and 8733 transitions. [2022-07-21 04:23:55,085 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:23:55,085 INFO L276 IsEmpty]: Start isEmpty. Operand 5338 states and 8733 transitions. [2022-07-21 04:23:55,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2022-07-21 04:23:55,094 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:23:55,094 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:23:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2022-07-21 04:23:55,095 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:23:55,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:23:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash -1711866724, now seen corresponding path program 1 times [2022-07-21 04:23:55,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:23:55,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1090151056] [2022-07-21 04:23:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:23:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:23:55,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,221 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:23:55,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,229 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:23:55,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,232 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:23:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,241 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,243 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:23:55,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,402 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 76 [2022-07-21 04:23:55,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,430 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:55,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,442 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:23:55,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:55,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,454 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:23:55,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,456 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:55,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:23:55,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,458 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:23:55,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,459 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:23:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:23:55,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:55,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:23:55,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:23:55,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:23:55,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:23:55,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:23:55,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,486 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:23:55,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:23:55,488 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 197 trivial. 0 not checked. [2022-07-21 04:23:55,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:23:55,488 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1090151056] [2022-07-21 04:23:55,488 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1090151056] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:23:55,488 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:23:55,489 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 04:23:55,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [263047608] [2022-07-21 04:23:55,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:23:55,489 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-21 04:23:55,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:23:55,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-21 04:23:55,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-07-21 04:23:55,490 INFO L87 Difference]: Start difference. First operand 5338 states and 8733 transitions. Second operand has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:24:00,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:24:00,614 INFO L93 Difference]: Finished difference Result 11359 states and 18934 transitions. [2022-07-21 04:24:00,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-07-21 04:24:00,615 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) Word has length 279 [2022-07-21 04:24:00,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:24:00,643 INFO L225 Difference]: With dead ends: 11359 [2022-07-21 04:24:00,643 INFO L226 Difference]: Without dead ends: 6315 [2022-07-21 04:24:00,659 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=62, Invalid=120, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:24:00,659 INFO L413 NwaCegarLoop]: 929 mSDtfsCounter, 992 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 2668 mSolverCounterSat, 258 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1070 SdHoareTripleChecker+Valid, 2335 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 258 IncrementalHoareTripleChecker+Valid, 2668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-07-21 04:24:00,660 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1070 Valid, 2335 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [258 Valid, 2668 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-07-21 04:24:00,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6315 states. [2022-07-21 04:24:01,278 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6315 to 5258. [2022-07-21 04:24:01,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5258 states, 4077 states have (on average 1.5938189845474613) internal successors, (6498), 4254 states have internal predecessors, (6498), 848 states have call successors, (848), 217 states have call predecessors, (848), 332 states have return successors, (1284), 844 states have call predecessors, (1284), 844 states have call successors, (1284) [2022-07-21 04:24:01,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5258 states to 5258 states and 8630 transitions. [2022-07-21 04:24:01,300 INFO L78 Accepts]: Start accepts. Automaton has 5258 states and 8630 transitions. Word has length 279 [2022-07-21 04:24:01,300 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:24:01,300 INFO L495 AbstractCegarLoop]: Abstraction has 5258 states and 8630 transitions. [2022-07-21 04:24:01,300 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 19.428571428571427) internal successors, (136), 4 states have internal predecessors, (136), 2 states have call successors, (23), 5 states have call predecessors, (23), 2 states have return successors, (22), 2 states have call predecessors, (22), 2 states have call successors, (22) [2022-07-21 04:24:01,301 INFO L276 IsEmpty]: Start isEmpty. Operand 5258 states and 8630 transitions. [2022-07-21 04:24:01,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 283 [2022-07-21 04:24:01,310 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:24:01,310 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:24:01,310 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2022-07-21 04:24:01,310 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:24:01,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:24:01,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1091726320, now seen corresponding path program 1 times [2022-07-21 04:24:01,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:24:01,311 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1908220342] [2022-07-21 04:24:01,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:24:01,311 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:24:01,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,478 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:24:01,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,482 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:24:01,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:24:01,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,501 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,507 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:24:01,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 79 [2022-07-21 04:24:01,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:01,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2022-07-21 04:24:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,693 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,695 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:01,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,704 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2022-07-21 04:24:01,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:24:01,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,708 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2022-07-21 04:24:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,709 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:24:01,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,710 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 92 [2022-07-21 04:24:01,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,711 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 102 [2022-07-21 04:24:01,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,723 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,725 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,726 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:01,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:24:01,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,731 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,732 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:01,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,733 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:01,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:24:01,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,736 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:24:01,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,737 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:24:01,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:01,739 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 13 proven. 0 refuted. 0 times theorem prover too weak. 193 trivial. 0 not checked. [2022-07-21 04:24:01,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:24:01,739 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1908220342] [2022-07-21 04:24:01,739 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1908220342] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:24:01,739 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:24:01,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:24:01,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464782086] [2022-07-21 04:24:01,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:24:01,740 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:24:01,740 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:24:01,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:24:01,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:24:01,741 INFO L87 Difference]: Start difference. First operand 5258 states and 8630 transitions. Second operand has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 04:24:07,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:24:07,321 INFO L93 Difference]: Finished difference Result 8188 states and 13517 transitions. [2022-07-21 04:24:07,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:24:07,321 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) Word has length 282 [2022-07-21 04:24:07,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:24:07,331 INFO L225 Difference]: With dead ends: 8188 [2022-07-21 04:24:07,331 INFO L226 Difference]: Without dead ends: 3023 [2022-07-21 04:24:07,339 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 69 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2022-07-21 04:24:07,340 INFO L413 NwaCegarLoop]: 935 mSDtfsCounter, 1385 mSDsluCounter, 2598 mSDsCounter, 0 mSdLazyCounter, 5134 mSolverCounterSat, 394 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1461 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 5528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 394 IncrementalHoareTripleChecker+Valid, 5134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:24:07,340 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1461 Valid, 3533 Invalid, 5528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [394 Valid, 5134 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 04:24:07,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3023 states. [2022-07-21 04:24:07,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3023 to 2503. [2022-07-21 04:24:07,684 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2503 states, 1964 states have (on average 1.5941955193482689) internal successors, (3131), 2048 states have internal predecessors, (3131), 377 states have call successors, (377), 112 states have call predecessors, (377), 161 states have return successors, (550), 366 states have call predecessors, (550), 373 states have call successors, (550) [2022-07-21 04:24:07,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2503 states to 2503 states and 4058 transitions. [2022-07-21 04:24:07,690 INFO L78 Accepts]: Start accepts. Automaton has 2503 states and 4058 transitions. Word has length 282 [2022-07-21 04:24:07,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:24:07,690 INFO L495 AbstractCegarLoop]: Abstraction has 2503 states and 4058 transitions. [2022-07-21 04:24:07,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.0) internal successors, (144), 6 states have internal predecessors, (144), 3 states have call successors, (23), 5 states have call predecessors, (23), 4 states have return successors, (22), 3 states have call predecessors, (22), 3 states have call successors, (22) [2022-07-21 04:24:07,691 INFO L276 IsEmpty]: Start isEmpty. Operand 2503 states and 4058 transitions. [2022-07-21 04:24:07,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 286 [2022-07-21 04:24:07,693 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:24:07,693 INFO L195 NwaCegarLoop]: trace histogram [7, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-21 04:24:07,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40 [2022-07-21 04:24:07,694 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:24:07,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:24:07,694 INFO L85 PathProgramCache]: Analyzing trace with hash -1666593273, now seen corresponding path program 1 times [2022-07-21 04:24:07,694 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:24:07,694 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718970037] [2022-07-21 04:24:07,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:24:07,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:24:07,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,818 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:24:07,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:07,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,854 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:24:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,860 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:24:07,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:07,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,873 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:24:07,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:07,991 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:24:08,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,058 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,069 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:08,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,072 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:24:08,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,109 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,114 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,117 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:08,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,130 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:24:08,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,133 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:24:08,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,134 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:24:08,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2022-07-21 04:24:08,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 101 [2022-07-21 04:24:08,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:24:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,152 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:08,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,156 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:24:08,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,159 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:24:08,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,162 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:24:08,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 62 [2022-07-21 04:24:08,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,165 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:24:08,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 75 [2022-07-21 04:24:08,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,168 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 2 proven. 58 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 04:24:08,168 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:24:08,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718970037] [2022-07-21 04:24:08,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718970037] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:24:08,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1595026191] [2022-07-21 04:24:08,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:24:08,169 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:24:08,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:24:08,172 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:24:08,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2022-07-21 04:24:08,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:24:08,481 INFO L263 TraceCheckSpWp]: Trace formula consists of 2459 conjuncts, 13 conjunts are in the unsatisfiable core [2022-07-21 04:24:08,486 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:24:08,804 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 22 proven. 33 refuted. 0 times theorem prover too weak. 174 trivial. 0 not checked. [2022-07-21 04:24:08,804 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:24:09,623 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 25 proven. 35 refuted. 0 times theorem prover too weak. 169 trivial. 0 not checked. [2022-07-21 04:24:09,624 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1595026191] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:24:09,624 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:24:09,624 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 10, 11] total 29 [2022-07-21 04:24:09,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351898811] [2022-07-21 04:24:09,624 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:24:09,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2022-07-21 04:24:09,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:24:09,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2022-07-21 04:24:09,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=723, Unknown=0, NotChecked=0, Total=812 [2022-07-21 04:24:09,626 INFO L87 Difference]: Start difference. First operand 2503 states and 4058 transitions. Second operand has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-07-21 04:24:59,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:24:59,178 INFO L93 Difference]: Finished difference Result 14308 states and 25184 transitions. [2022-07-21 04:24:59,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 148 states. [2022-07-21 04:24:59,179 INFO L78 Accepts]: Start accepts. Automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) Word has length 285 [2022-07-21 04:24:59,179 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:24:59,217 INFO L225 Difference]: With dead ends: 14308 [2022-07-21 04:24:59,218 INFO L226 Difference]: Without dead ends: 10985 [2022-07-21 04:24:59,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 888 GetRequests, 714 SyntacticMatches, 2 SemanticMatches, 172 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11436 ImplicationChecksByTransitivity, 21.4s TimeCoverageRelationStatistics Valid=4149, Invalid=25953, Unknown=0, NotChecked=0, Total=30102 [2022-07-21 04:24:59,245 INFO L413 NwaCegarLoop]: 1283 mSDtfsCounter, 19693 mSDsluCounter, 8111 mSDsCounter, 0 mSdLazyCounter, 30263 mSolverCounterSat, 10141 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 23.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19693 SdHoareTripleChecker+Valid, 9394 SdHoareTripleChecker+Invalid, 40404 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 10141 IncrementalHoareTripleChecker+Valid, 30263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 26.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:24:59,245 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19693 Valid, 9394 Invalid, 40404 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [10141 Valid, 30263 Invalid, 0 Unknown, 0 Unchecked, 26.1s Time] [2022-07-21 04:24:59,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10985 states. [2022-07-21 04:25:00,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10985 to 8881. [2022-07-21 04:25:00,344 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8881 states, 6886 states have (on average 1.5515538774324718) internal successors, (10684), 7184 states have internal predecessors, (10684), 1380 states have call successors, (1380), 456 states have call predecessors, (1380), 614 states have return successors, (2235), 1336 states have call predecessors, (2235), 1376 states have call successors, (2235) [2022-07-21 04:25:00,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8881 states to 8881 states and 14299 transitions. [2022-07-21 04:25:00,373 INFO L78 Accepts]: Start accepts. Automaton has 8881 states and 14299 transitions. Word has length 285 [2022-07-21 04:25:00,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:25:00,373 INFO L495 AbstractCegarLoop]: Abstraction has 8881 states and 14299 transitions. [2022-07-21 04:25:00,373 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 11.724137931034482) internal successors, (340), 23 states have internal predecessors, (340), 12 states have call successors, (66), 9 states have call predecessors, (66), 15 states have return successors, (70), 18 states have call predecessors, (70), 12 states have call successors, (70) [2022-07-21 04:25:00,373 INFO L276 IsEmpty]: Start isEmpty. Operand 8881 states and 14299 transitions. [2022-07-21 04:25:00,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 239 [2022-07-21 04:25:00,377 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:25:00,377 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:25:00,396 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2022-07-21 04:25:00,577 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable41 [2022-07-21 04:25:00,578 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:25:00,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:25:00,578 INFO L85 PathProgramCache]: Analyzing trace with hash -28578643, now seen corresponding path program 1 times [2022-07-21 04:25:00,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:25:00,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292990006] [2022-07-21 04:25:00,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:25:00,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:25:00,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,712 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:25:00,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,717 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,718 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:25:00,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:25:00,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:25:00,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,846 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:25:00,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,883 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,884 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:25:00,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,888 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:25:00,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,913 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,915 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:25:00,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,925 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 65 [2022-07-21 04:25:00,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,927 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:25:00,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,928 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2022-07-21 04:25:00,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,929 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2022-07-21 04:25:00,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:25:00,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2022-07-21 04:25:00,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2022-07-21 04:25:00,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 131 [2022-07-21 04:25:00,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 142 [2022-07-21 04:25:00,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:00,937 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-21 04:25:00,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:25:00,937 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292990006] [2022-07-21 04:25:00,937 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292990006] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:25:00,938 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:25:00,938 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 04:25:00,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363478679] [2022-07-21 04:25:00,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:25:00,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 04:25:00,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:25:00,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 04:25:00,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 04:25:00,939 INFO L87 Difference]: Start difference. First operand 8881 states and 14299 transitions. Second operand has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 04:25:07,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:25:07,937 INFO L93 Difference]: Finished difference Result 20538 states and 34497 transitions. [2022-07-21 04:25:07,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-07-21 04:25:07,937 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) Word has length 238 [2022-07-21 04:25:07,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:25:07,984 INFO L225 Difference]: With dead ends: 20538 [2022-07-21 04:25:07,984 INFO L226 Difference]: Without dead ends: 11783 [2022-07-21 04:25:08,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=72, Invalid=200, Unknown=0, NotChecked=0, Total=272 [2022-07-21 04:25:08,009 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 950 mSDsluCounter, 2315 mSDsCounter, 0 mSdLazyCounter, 4386 mSolverCounterSat, 297 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1023 SdHoareTripleChecker+Valid, 3233 SdHoareTripleChecker+Invalid, 4683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 297 IncrementalHoareTripleChecker+Valid, 4386 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-07-21 04:25:08,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1023 Valid, 3233 Invalid, 4683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [297 Valid, 4386 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-07-21 04:25:08,019 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11783 states. [2022-07-21 04:25:09,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11783 to 8941. [2022-07-21 04:25:09,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5425531914893618) internal successors, (10730), 7223 states have internal predecessors, (10730), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-07-21 04:25:09,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14348 transitions. [2022-07-21 04:25:09,170 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14348 transitions. Word has length 238 [2022-07-21 04:25:09,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:25:09,170 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14348 transitions. [2022-07-21 04:25:09,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 15.444444444444445) internal successors, (139), 5 states have internal predecessors, (139), 2 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 3 states have call predecessors, (24), 2 states have call successors, (24) [2022-07-21 04:25:09,171 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14348 transitions. [2022-07-21 04:25:09,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 246 [2022-07-21 04:25:09,176 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:25:09,176 INFO L195 NwaCegarLoop]: trace histogram [8, 8, 6, 5, 4, 3, 3, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:25:09,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2022-07-21 04:25:09,176 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:25:09,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:25:09,177 INFO L85 PathProgramCache]: Analyzing trace with hash 1303563419, now seen corresponding path program 1 times [2022-07-21 04:25:09,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:25:09,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1778185955] [2022-07-21 04:25:09,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:25:09,177 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:25:09,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,304 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:25:09,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,309 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,311 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:25:09,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:25:09,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:25:09,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,448 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:25:09,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,485 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:25:09,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,487 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,488 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:25:09,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,532 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:09,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,536 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:25:09,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 72 [2022-07-21 04:25:09,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,550 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:25:09,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 85 [2022-07-21 04:25:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,552 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 104 [2022-07-21 04:25:09,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 111 [2022-07-21 04:25:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,554 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 119 [2022-07-21 04:25:09,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 128 [2022-07-21 04:25:09,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,556 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 138 [2022-07-21 04:25:09,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,557 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 149 [2022-07-21 04:25:09,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:09,562 INFO L134 CoverageAnalysis]: Checked inductivity of 172 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2022-07-21 04:25:09,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:25:09,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1778185955] [2022-07-21 04:25:09,563 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1778185955] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 04:25:09,563 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 04:25:09,563 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-07-21 04:25:09,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1326844100] [2022-07-21 04:25:09,564 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 04:25:09,564 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 04:25:09,564 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:25:09,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 04:25:09,565 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-07-21 04:25:09,565 INFO L87 Difference]: Start difference. First operand 8941 states and 14348 transitions. Second operand has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-21 04:25:15,888 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 04:25:15,888 INFO L93 Difference]: Finished difference Result 20193 states and 33695 transitions. [2022-07-21 04:25:15,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-21 04:25:15,889 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) Word has length 245 [2022-07-21 04:25:15,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 04:25:15,958 INFO L225 Difference]: With dead ends: 20193 [2022-07-21 04:25:15,958 INFO L226 Difference]: Without dead ends: 10574 [2022-07-21 04:25:16,002 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=123, Unknown=0, NotChecked=0, Total=182 [2022-07-21 04:25:16,003 INFO L413 NwaCegarLoop]: 883 mSDtfsCounter, 2535 mSDsluCounter, 2521 mSDsCounter, 0 mSdLazyCounter, 4242 mSolverCounterSat, 639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2598 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 4881 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 639 IncrementalHoareTripleChecker+Valid, 4242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-07-21 04:25:16,003 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2598 Valid, 3404 Invalid, 4881 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [639 Valid, 4242 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-07-21 04:25:16,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10574 states. [2022-07-21 04:25:17,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10574 to 8941. [2022-07-21 04:25:17,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8941 states, 6956 states have (on average 1.5278895917193789) internal successors, (10628), 7223 states have internal predecessors, (10628), 1356 states have call successors, (1356), 456 states have call predecessors, (1356), 628 states have return successors, (2262), 1357 states have call predecessors, (2262), 1352 states have call successors, (2262) [2022-07-21 04:25:17,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8941 states to 8941 states and 14246 transitions. [2022-07-21 04:25:17,221 INFO L78 Accepts]: Start accepts. Automaton has 8941 states and 14246 transitions. Word has length 245 [2022-07-21 04:25:17,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 04:25:17,221 INFO L495 AbstractCegarLoop]: Abstraction has 8941 states and 14246 transitions. [2022-07-21 04:25:17,221 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 16.22222222222222) internal successors, (146), 6 states have internal predecessors, (146), 4 states have call successors, (25), 5 states have call predecessors, (25), 3 states have return successors, (24), 4 states have call predecessors, (24), 4 states have call successors, (24) [2022-07-21 04:25:17,221 INFO L276 IsEmpty]: Start isEmpty. Operand 8941 states and 14246 transitions. [2022-07-21 04:25:17,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 251 [2022-07-21 04:25:17,226 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 04:25:17,226 INFO L195 NwaCegarLoop]: trace histogram [9, 9, 7, 5, 4, 3, 3, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 04:25:17,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2022-07-21 04:25:17,226 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 04:25:17,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 04:25:17,227 INFO L85 PathProgramCache]: Analyzing trace with hash -1902906060, now seen corresponding path program 1 times [2022-07-21 04:25:17,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 04:25:17,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [332192266] [2022-07-21 04:25:17,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:25:17,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 04:25:17,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,347 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2022-07-21 04:25:17,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,366 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2022-07-21 04:25:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,373 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2022-07-21 04:25:17,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,404 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2022-07-21 04:25:17,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,527 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 73 [2022-07-21 04:25:17,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,565 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,581 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,583 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,584 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 17 [2022-07-21 04:25:17,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2022-07-21 04:25:17,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,614 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2022-07-21 04:25:17,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,616 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2022-07-21 04:25:17,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2022-07-21 04:25:17,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,640 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 77 [2022-07-21 04:25:17,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,646 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2022-07-21 04:25:17,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,647 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 90 [2022-07-21 04:25:17,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,648 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 109 [2022-07-21 04:25:17,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,650 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2022-07-21 04:25:17,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,651 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 124 [2022-07-21 04:25:17,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,654 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 133 [2022-07-21 04:25:17,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,655 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 143 [2022-07-21 04:25:17,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,656 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 154 [2022-07-21 04:25:17,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:17,659 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 22 proven. 17 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-21 04:25:17,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 04:25:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [332192266] [2022-07-21 04:25:17,659 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [332192266] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 04:25:17,659 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [779217359] [2022-07-21 04:25:17,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 04:25:17,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 04:25:17,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 04:25:17,664 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-21 04:25:17,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2022-07-21 04:25:17,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 04:25:18,001 INFO L263 TraceCheckSpWp]: Trace formula consists of 2137 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-21 04:25:18,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 04:25:18,315 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 109 proven. 9 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2022-07-21 04:25:18,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 04:25:18,835 INFO L134 CoverageAnalysis]: Checked inductivity of 210 backedges. 19 proven. 9 refuted. 0 times theorem prover too weak. 182 trivial. 0 not checked. [2022-07-21 04:25:18,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [779217359] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 04:25:18,835 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 04:25:18,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 9, 8] total 25 [2022-07-21 04:25:18,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [663932478] [2022-07-21 04:25:18,835 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 04:25:18,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2022-07-21 04:25:18,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 04:25:18,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2022-07-21 04:25:18,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=511, Unknown=0, NotChecked=0, Total=600 [2022-07-21 04:25:18,837 INFO L87 Difference]: Start difference. First operand 8941 states and 14246 transitions. Second operand has 25 states, 25 states have (on average 12.2) internal successors, (305), 18 states have internal predecessors, (305), 9 states have call successors, (60), 8 states have call predecessors, (60), 14 states have return successors, (59), 14 states have call predecessors, (59), 9 states have call successors, (59)