./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label24.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version f4b24e32 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label24.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 e1ea7efa1a6f5e3c8e81d21cb48d3f8215c9331802f3340a04165a0f6109c81b --- Real Ultimate output --- This is Ultimate 0.2.2-?-f4b24e3 [2022-07-13 13:29:44,615 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-13 13:29:44,617 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-13 13:29:44,648 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-13 13:29:44,648 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-13 13:29:44,649 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-13 13:29:44,651 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-13 13:29:44,652 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-13 13:29:44,654 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-13 13:29:44,657 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-13 13:29:44,658 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-13 13:29:44,659 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-13 13:29:44,659 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-13 13:29:44,661 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-13 13:29:44,662 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-13 13:29:44,664 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-13 13:29:44,665 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-13 13:29:44,667 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-13 13:29:44,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-13 13:29:44,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-13 13:29:44,674 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-13 13:29:44,687 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-13 13:29:44,688 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-13 13:29:44,689 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-13 13:29:44,690 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-13 13:29:44,695 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-13 13:29:44,695 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-13 13:29:44,695 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-13 13:29:44,696 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-13 13:29:44,696 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-13 13:29:44,697 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-13 13:29:44,697 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-13 13:29:44,698 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-13 13:29:44,699 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-13 13:29:44,699 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-13 13:29:44,700 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-13 13:29:44,700 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-13 13:29:44,700 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-13 13:29:44,700 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-13 13:29:44,701 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-13 13:29:44,701 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-13 13:29:44,703 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-13 13:29:44,703 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-13 13:29:44,726 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-13 13:29:44,726 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-13 13:29:44,726 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-13 13:29:44,727 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-13 13:29:44,727 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-13 13:29:44,727 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-13 13:29:44,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-13 13:29:44,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-13 13:29:44,728 INFO L138 SettingsManager]: * Use SBE=true [2022-07-13 13:29:44,728 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-13 13:29:44,729 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-13 13:29:44,730 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-13 13:29:44,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:29:44,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-13 13:29:44,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-13 13:29:44,731 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-13 13:29:44,731 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-13 13:29:44,731 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-13 13:29:44,731 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-13 13:29:44,732 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-13 13:29:44,732 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-13 13:29:44,732 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e1ea7efa1a6f5e3c8e81d21cb48d3f8215c9331802f3340a04165a0f6109c81b [2022-07-13 13:29:44,908 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-13 13:29:44,924 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-13 13:29:44,926 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-13 13:29:44,927 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-13 13:29:44,927 INFO L275 PluginConnector]: CDTParser initialized [2022-07-13 13:29:44,928 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label24.c [2022-07-13 13:29:44,968 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f67935e/fe0b608940784a75b6db5c37d41b25b3/FLAGb832cfdbb [2022-07-13 13:29:45,674 INFO L306 CDTParser]: Found 1 translation units. [2022-07-13 13:29:45,674 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label24.c [2022-07-13 13:29:45,702 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f67935e/fe0b608940784a75b6db5c37d41b25b3/FLAGb832cfdbb [2022-07-13 13:29:46,002 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f2f67935e/fe0b608940784a75b6db5c37d41b25b3 [2022-07-13 13:29:46,004 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-13 13:29:46,006 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-13 13:29:46,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-13 13:29:46,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-13 13:29:46,010 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-13 13:29:46,010 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:46" (1/1) ... [2022-07-13 13:29:46,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ed25b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:46, skipping insertion in model container [2022-07-13 13:29:46,011 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.07 01:29:46" (1/1) ... [2022-07-13 13:29:46,015 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-13 13:29:46,140 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-13 13:29:46,395 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/eca-rers2012/Problem19_label24.c[6032,6045] [2022-07-13 13:29:47,182 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:29:47,192 INFO L203 MainTranslator]: Completed pre-run [2022-07-13 13:29:47,219 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/eca-rers2012/Problem19_label24.c[6032,6045] [2022-07-13 13:29:47,756 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-13 13:29:47,780 INFO L208 MainTranslator]: Completed translation [2022-07-13 13:29:47,781 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47 WrapperNode [2022-07-13 13:29:47,781 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-13 13:29:47,782 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-13 13:29:47,782 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-13 13:29:47,782 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-13 13:29:47,796 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:47,875 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:48,861 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-13 13:29:48,861 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-13 13:29:48,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-13 13:29:48,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-13 13:29:48,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-13 13:29:48,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:48,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,098 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,098 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,503 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,682 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-13 13:29:49,964 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-13 13:29:49,964 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-13 13:29:49,964 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-13 13:29:49,965 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (1/1) ... [2022-07-13 13:29:49,970 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-13 13:29:49,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:29:49,985 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-13 13:29:49,990 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-13 13:29:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-13 13:29:50,006 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-13 13:29:50,007 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-13 13:29:50,007 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-13 13:29:50,051 INFO L234 CfgBuilder]: Building ICFG [2022-07-13 13:29:50,052 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-13 13:29:55,482 INFO L275 CfgBuilder]: Performing block encoding [2022-07-13 13:29:55,526 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-13 13:29:55,527 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-13 13:29:55,531 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:55 BoogieIcfgContainer [2022-07-13 13:29:55,531 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-13 13:29:55,533 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-13 13:29:55,533 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-13 13:29:55,535 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-13 13:29:55,535 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.07 01:29:46" (1/3) ... [2022-07-13 13:29:55,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea3a558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:55, skipping insertion in model container [2022-07-13 13:29:55,536 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.07 01:29:47" (2/3) ... [2022-07-13 13:29:55,536 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@ea3a558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.07 01:29:55, skipping insertion in model container [2022-07-13 13:29:55,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.07 01:29:55" (3/3) ... [2022-07-13 13:29:55,538 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label24.c [2022-07-13 13:29:55,547 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-13 13:29:55,547 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-13 13:29:55,635 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-13 13:29:55,642 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@c05728, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@4a9a42ea [2022-07-13 13:29:55,642 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-13 13:29:55,657 INFO L276 IsEmpty]: Start isEmpty. Operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:29:55,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2022-07-13 13:29:55,664 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:29:55,665 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:29:55,665 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:29:55,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:29:55,669 INFO L85 PathProgramCache]: Analyzing trace with hash -2068820151, now seen corresponding path program 1 times [2022-07-13 13:29:55,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:29:55,679 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1532159119] [2022-07-13 13:29:55,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:29:55,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:29:55,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:29:55,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:29:55,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:29:55,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1532159119] [2022-07-13 13:29:55,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1532159119] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:29:55,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:29:55,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:29:55,878 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [852320057] [2022-07-13 13:29:55,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:29:55,881 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:29:55,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:29:55,897 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:29:55,898 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:29:55,902 INFO L87 Difference]: Start difference. First operand has 1748 states, 1746 states have (on average 1.8699885452462772) internal successors, (3265), 1747 states have internal predecessors, (3265), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:05,173 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:05,173 INFO L93 Difference]: Finished difference Result 6288 states and 12045 transitions. [2022-07-13 13:30:05,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:05,175 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2022-07-13 13:30:05,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:05,199 INFO L225 Difference]: With dead ends: 6288 [2022-07-13 13:30:05,200 INFO L226 Difference]: Without dead ends: 4471 [2022-07-13 13:30:05,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:30:05,208 INFO L413 NwaCegarLoop]: 731 mSDtfsCounter, 4592 mSDsluCounter, 280 mSDsCounter, 0 mSdLazyCounter, 7124 mSolverCounterSat, 3651 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4592 SdHoareTripleChecker+Valid, 1011 SdHoareTripleChecker+Invalid, 10775 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3651 IncrementalHoareTripleChecker+Valid, 7124 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:05,209 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4592 Valid, 1011 Invalid, 10775 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3651 Valid, 7124 Invalid, 0 Unknown, 0 Unchecked, 8.9s Time] [2022-07-13 13:30:05,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4471 states. [2022-07-13 13:30:05,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4471 to 4467. [2022-07-13 13:30:05,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4467 states, 4466 states have (on average 1.5665024630541873) internal successors, (6996), 4466 states have internal predecessors, (6996), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:05,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4467 states to 4467 states and 6996 transitions. [2022-07-13 13:30:05,326 INFO L78 Accepts]: Start accepts. Automaton has 4467 states and 6996 transitions. Word has length 45 [2022-07-13 13:30:05,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:05,327 INFO L495 AbstractCegarLoop]: Abstraction has 4467 states and 6996 transitions. [2022-07-13 13:30:05,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 3 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:05,327 INFO L276 IsEmpty]: Start isEmpty. Operand 4467 states and 6996 transitions. [2022-07-13 13:30:05,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 320 [2022-07-13 13:30:05,338 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:05,338 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2022-07-13 13:30:05,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-13 13:30:05,339 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:05,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:05,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1526841922, now seen corresponding path program 1 times [2022-07-13 13:30:05,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:05,340 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250967623] [2022-07-13 13:30:05,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:05,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:05,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:05,714 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 106 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 13:30:05,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:05,715 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250967623] [2022-07-13 13:30:05,715 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250967623] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:05,715 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:05,715 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:30:05,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250708300] [2022-07-13 13:30:05,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:05,717 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:30:05,717 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:05,718 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:30:05,718 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:05,718 INFO L87 Difference]: Start difference. First operand 4467 states and 6996 transitions. Second operand has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:14,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:14,324 INFO L93 Difference]: Finished difference Result 11710 states and 20221 transitions. [2022-07-13 13:30:14,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:14,328 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 319 [2022-07-13 13:30:14,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:14,351 INFO L225 Difference]: With dead ends: 11710 [2022-07-13 13:30:14,351 INFO L226 Difference]: Without dead ends: 8610 [2022-07-13 13:30:14,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:30:14,359 INFO L413 NwaCegarLoop]: 1801 mSDtfsCounter, 3755 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9445 mSolverCounterSat, 1332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3755 SdHoareTripleChecker+Valid, 2155 SdHoareTripleChecker+Invalid, 10777 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1332 IncrementalHoareTripleChecker+Valid, 9445 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.4s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:14,359 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3755 Valid, 2155 Invalid, 10777 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1332 Valid, 9445 Invalid, 0 Unknown, 0 Unchecked, 8.4s Time] [2022-07-13 13:30:14,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8610 states. [2022-07-13 13:30:14,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8610 to 8596. [2022-07-13 13:30:14,454 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.348458406050029) internal successors, (11590), 8595 states have internal predecessors, (11590), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:14,468 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11590 transitions. [2022-07-13 13:30:14,468 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11590 transitions. Word has length 319 [2022-07-13 13:30:14,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:14,470 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11590 transitions. [2022-07-13 13:30:14,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 69.25) internal successors, (277), 3 states have internal predecessors, (277), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:14,471 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11590 transitions. [2022-07-13 13:30:14,474 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 348 [2022-07-13 13:30:14,475 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:14,475 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:14,477 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-13 13:30:14,477 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:14,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:14,478 INFO L85 PathProgramCache]: Analyzing trace with hash -353847652, now seen corresponding path program 1 times [2022-07-13 13:30:14,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:14,479 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1910975477] [2022-07-13 13:30:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:14,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:14,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:14,730 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 132 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-07-13 13:30:14,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:14,730 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1910975477] [2022-07-13 13:30:14,730 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1910975477] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:14,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:14,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-13 13:30:14,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246041651] [2022-07-13 13:30:14,732 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:30:14,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:14,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:30:14,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:14,733 INFO L87 Difference]: Start difference. First operand 8596 states and 11590 transitions. Second operand has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:20,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:20,353 INFO L93 Difference]: Finished difference Result 14491 states and 20461 transitions. [2022-07-13 13:30:20,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:20,353 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 347 [2022-07-13 13:30:20,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:20,374 INFO L225 Difference]: With dead ends: 14491 [2022-07-13 13:30:20,374 INFO L226 Difference]: Without dead ends: 8596 [2022-07-13 13:30:20,384 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:20,388 INFO L413 NwaCegarLoop]: 1773 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7321 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2115 SdHoareTripleChecker+Invalid, 7329 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.5s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:20,390 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2115 Invalid, 7329 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7321 Invalid, 0 Unknown, 0 Unchecked, 5.5s Time] [2022-07-13 13:30:20,397 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8596 states. [2022-07-13 13:30:20,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8596 to 8596. [2022-07-13 13:30:20,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8596 states, 8595 states have (on average 1.3469458987783596) internal successors, (11577), 8595 states have internal predecessors, (11577), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8596 states to 8596 states and 11577 transitions. [2022-07-13 13:30:20,523 INFO L78 Accepts]: Start accepts. Automaton has 8596 states and 11577 transitions. Word has length 347 [2022-07-13 13:30:20,524 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:20,524 INFO L495 AbstractCegarLoop]: Abstraction has 8596 states and 11577 transitions. [2022-07-13 13:30:20,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 82.75) internal successors, (331), 3 states have internal predecessors, (331), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:20,525 INFO L276 IsEmpty]: Start isEmpty. Operand 8596 states and 11577 transitions. [2022-07-13 13:30:20,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 600 [2022-07-13 13:30:20,532 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:20,533 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:20,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-13 13:30:20,533 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:20,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:20,536 INFO L85 PathProgramCache]: Analyzing trace with hash 1876814997, now seen corresponding path program 1 times [2022-07-13 13:30:20,536 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:20,536 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1303672185] [2022-07-13 13:30:20,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:20,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:20,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:20,855 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 107 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:30:20,855 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:20,855 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1303672185] [2022-07-13 13:30:20,856 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1303672185] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:30:20,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1419953029] [2022-07-13 13:30:20,856 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:20,856 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:30:20,856 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:30:20,880 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:30:20,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-13 13:30:21,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:21,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 717 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:30:21,183 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:30:21,281 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 149 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:30:21,282 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:30:21,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1419953029] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:21,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:30:21,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2022-07-13 13:30:21,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132005272] [2022-07-13 13:30:21,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:21,284 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:21,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:21,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:21,284 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 13:30:21,285 INFO L87 Difference]: Start difference. First operand 8596 states and 11577 transitions. Second operand has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:26,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:26,677 INFO L93 Difference]: Finished difference Result 19935 states and 28708 transitions. [2022-07-13 13:30:26,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:26,678 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 599 [2022-07-13 13:30:26,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:26,717 INFO L225 Difference]: With dead ends: 19935 [2022-07-13 13:30:26,718 INFO L226 Difference]: Without dead ends: 14071 [2022-07-13 13:30:26,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 602 GetRequests, 598 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-13 13:30:26,729 INFO L413 NwaCegarLoop]: 1371 mSDtfsCounter, 1730 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 3864 mSolverCounterSat, 1728 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1730 SdHoareTripleChecker+Valid, 1508 SdHoareTripleChecker+Invalid, 5592 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1728 IncrementalHoareTripleChecker+Valid, 3864 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:26,729 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1730 Valid, 1508 Invalid, 5592 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1728 Valid, 3864 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-07-13 13:30:26,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14071 states. [2022-07-13 13:30:26,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14071 to 14071. [2022-07-13 13:30:26,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14071 states, 14070 states have (on average 1.2694385216773276) internal successors, (17861), 14070 states have internal predecessors, (17861), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:26,917 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14071 states to 14071 states and 17861 transitions. [2022-07-13 13:30:26,917 INFO L78 Accepts]: Start accepts. Automaton has 14071 states and 17861 transitions. Word has length 599 [2022-07-13 13:30:26,918 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:26,919 INFO L495 AbstractCegarLoop]: Abstraction has 14071 states and 17861 transitions. [2022-07-13 13:30:26,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 199.66666666666666) internal successors, (599), 3 states have internal predecessors, (599), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:26,919 INFO L276 IsEmpty]: Start isEmpty. Operand 14071 states and 17861 transitions. [2022-07-13 13:30:26,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 601 [2022-07-13 13:30:26,923 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:26,923 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:26,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-07-13 13:30:27,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:30:27,140 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:27,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:27,141 INFO L85 PathProgramCache]: Analyzing trace with hash 632483771, now seen corresponding path program 1 times [2022-07-13 13:30:27,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:27,141 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180588585] [2022-07-13 13:30:27,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:27,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:27,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:27,385 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-13 13:30:27,385 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:27,385 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180588585] [2022-07-13 13:30:27,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180588585] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:27,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:27,386 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:30:27,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1308784474] [2022-07-13 13:30:27,386 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:27,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:27,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:27,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:27,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:27,388 INFO L87 Difference]: Start difference. First operand 14071 states and 17861 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:32,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:32,705 INFO L93 Difference]: Finished difference Result 36504 states and 47794 transitions. [2022-07-13 13:30:32,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:32,707 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 600 [2022-07-13 13:30:32,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:32,744 INFO L225 Difference]: With dead ends: 36504 [2022-07-13 13:30:32,744 INFO L226 Difference]: Without dead ends: 25165 [2022-07-13 13:30:32,757 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:32,758 INFO L413 NwaCegarLoop]: 695 mSDtfsCounter, 2110 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 5095 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2110 SdHoareTripleChecker+Valid, 964 SdHoareTripleChecker+Invalid, 5529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5095 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:32,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2110 Valid, 964 Invalid, 5529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5095 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-13 13:30:32,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25165 states. [2022-07-13 13:30:32,956 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25165 to 23797. [2022-07-13 13:30:32,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23797 states, 23796 states have (on average 1.2674399058665322) internal successors, (30160), 23796 states have internal predecessors, (30160), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:33,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23797 states to 23797 states and 30160 transitions. [2022-07-13 13:30:33,003 INFO L78 Accepts]: Start accepts. Automaton has 23797 states and 30160 transitions. Word has length 600 [2022-07-13 13:30:33,004 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:33,004 INFO L495 AbstractCegarLoop]: Abstraction has 23797 states and 30160 transitions. [2022-07-13 13:30:33,004 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:33,005 INFO L276 IsEmpty]: Start isEmpty. Operand 23797 states and 30160 transitions. [2022-07-13 13:30:33,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 618 [2022-07-13 13:30:33,007 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:33,008 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:33,008 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-13 13:30:33,008 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:33,009 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:33,009 INFO L85 PathProgramCache]: Analyzing trace with hash -1424774015, now seen corresponding path program 1 times [2022-07-13 13:30:33,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:33,009 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386554358] [2022-07-13 13:30:33,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:33,009 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:33,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:33,202 INFO L134 CoverageAnalysis]: Checked inductivity of 169 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-13 13:30:33,203 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:33,203 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386554358] [2022-07-13 13:30:33,203 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386554358] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:33,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:33,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-13 13:30:33,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1538440073] [2022-07-13 13:30:33,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:33,204 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:33,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:33,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:33,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:33,205 INFO L87 Difference]: Start difference. First operand 23797 states and 30160 transitions. Second operand has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:38,461 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:38,461 INFO L93 Difference]: Finished difference Result 50347 states and 65462 transitions. [2022-07-13 13:30:38,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:38,462 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 617 [2022-07-13 13:30:38,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:38,508 INFO L225 Difference]: With dead ends: 50347 [2022-07-13 13:30:38,509 INFO L226 Difference]: Without dead ends: 29282 [2022-07-13 13:30:38,520 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-13 13:30:38,521 INFO L413 NwaCegarLoop]: 676 mSDtfsCounter, 1377 mSDsluCounter, 47 mSDsCounter, 0 mSdLazyCounter, 3921 mSolverCounterSat, 2125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1377 SdHoareTripleChecker+Valid, 723 SdHoareTripleChecker+Invalid, 6046 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2125 IncrementalHoareTripleChecker+Valid, 3921 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:38,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1377 Valid, 723 Invalid, 6046 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2125 Valid, 3921 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2022-07-13 13:30:38,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29282 states. [2022-07-13 13:30:38,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29282 to 29267. [2022-07-13 13:30:38,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29267 states, 29266 states have (on average 1.2553133328777422) internal successors, (36738), 29266 states have internal predecessors, (36738), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:38,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29267 states to 29267 states and 36738 transitions. [2022-07-13 13:30:38,809 INFO L78 Accepts]: Start accepts. Automaton has 29267 states and 36738 transitions. Word has length 617 [2022-07-13 13:30:38,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:38,811 INFO L495 AbstractCegarLoop]: Abstraction has 29267 states and 36738 transitions. [2022-07-13 13:30:38,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 178.0) internal successors, (534), 2 states have internal predecessors, (534), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:38,812 INFO L276 IsEmpty]: Start isEmpty. Operand 29267 states and 36738 transitions. [2022-07-13 13:30:38,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 830 [2022-07-13 13:30:38,818 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:38,819 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:38,819 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-13 13:30:38,820 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:38,820 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:38,820 INFO L85 PathProgramCache]: Analyzing trace with hash -504910022, now seen corresponding path program 1 times [2022-07-13 13:30:38,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:38,821 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [720279918] [2022-07-13 13:30:38,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:38,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:38,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:39,139 INFO L134 CoverageAnalysis]: Checked inductivity of 506 backedges. 297 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-13 13:30:39,139 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:39,139 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [720279918] [2022-07-13 13:30:39,139 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [720279918] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:39,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:30:39,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:30:39,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533018648] [2022-07-13 13:30:39,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:39,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:30:39,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:39,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:30:39,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:39,142 INFO L87 Difference]: Start difference. First operand 29267 states and 36738 transitions. Second operand has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:48,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:48,640 INFO L93 Difference]: Finished difference Result 98282 states and 126943 transitions. [2022-07-13 13:30:48,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:30:48,643 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 829 [2022-07-13 13:30:48,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:48,734 INFO L225 Difference]: With dead ends: 98282 [2022-07-13 13:30:48,735 INFO L226 Difference]: Without dead ends: 71747 [2022-07-13 13:30:48,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:30:48,774 INFO L413 NwaCegarLoop]: 822 mSDtfsCounter, 3382 mSDsluCounter, 259 mSDsCounter, 0 mSdLazyCounter, 8463 mSolverCounterSat, 3306 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3382 SdHoareTripleChecker+Valid, 1081 SdHoareTripleChecker+Invalid, 11769 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3306 IncrementalHoareTripleChecker+Valid, 8463 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:48,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3382 Valid, 1081 Invalid, 11769 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3306 Valid, 8463 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-07-13 13:30:48,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71747 states. [2022-07-13 13:30:49,352 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71747 to 70298. [2022-07-13 13:30:49,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70298 states, 70297 states have (on average 1.2196110787089065) internal successors, (85735), 70297 states have internal predecessors, (85735), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:49,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70298 states to 70298 states and 85735 transitions. [2022-07-13 13:30:49,487 INFO L78 Accepts]: Start accepts. Automaton has 70298 states and 85735 transitions. Word has length 829 [2022-07-13 13:30:49,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:49,488 INFO L495 AbstractCegarLoop]: Abstraction has 70298 states and 85735 transitions. [2022-07-13 13:30:49,488 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 155.25) internal successors, (621), 4 states have internal predecessors, (621), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:49,488 INFO L276 IsEmpty]: Start isEmpty. Operand 70298 states and 85735 transitions. [2022-07-13 13:30:49,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 848 [2022-07-13 13:30:49,494 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:49,494 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-13 13:30:49,495 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:49,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash 1507889710, now seen corresponding path program 1 times [2022-07-13 13:30:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:49,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [587273216] [2022-07-13 13:30:49,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:49,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:49,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:50,259 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 213 proven. 313 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:30:50,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [587273216] [2022-07-13 13:30:50,259 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [587273216] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:30:50,259 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1280519765] [2022-07-13 13:30:50,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:50,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:30:50,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:30:50,280 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:30:50,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-13 13:30:50,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:50,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 993 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:30:50,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:30:50,740 INFO L134 CoverageAnalysis]: Checked inductivity of 526 backedges. 483 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 13:30:50,740 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:30:50,740 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1280519765] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:30:50,741 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:30:50,741 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [7] total 8 [2022-07-13 13:30:50,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259090715] [2022-07-13 13:30:50,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:30:50,742 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:30:50,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:30:50,744 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:30:50,744 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:30:50,744 INFO L87 Difference]: Start difference. First operand 70298 states and 85735 transitions. Second operand has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:56,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:30:56,794 INFO L93 Difference]: Finished difference Result 180280 states and 223997 transitions. [2022-07-13 13:30:56,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:30:56,795 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 847 [2022-07-13 13:30:56,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:30:57,018 INFO L225 Difference]: With dead ends: 180280 [2022-07-13 13:30:57,019 INFO L226 Difference]: Without dead ends: 112714 [2022-07-13 13:30:57,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 854 GetRequests, 848 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:30:57,086 INFO L413 NwaCegarLoop]: 3042 mSDtfsCounter, 1255 mSDsluCounter, 167 mSDsCounter, 0 mSdLazyCounter, 4144 mSolverCounterSat, 1639 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1255 SdHoareTripleChecker+Valid, 3209 SdHoareTripleChecker+Invalid, 5783 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1639 IncrementalHoareTripleChecker+Valid, 4144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2022-07-13 13:30:57,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1255 Valid, 3209 Invalid, 5783 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1639 Valid, 4144 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2022-07-13 13:30:57,193 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112714 states. [2022-07-13 13:30:58,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112714 to 112645. [2022-07-13 13:30:58,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112645 states, 112644 states have (on average 1.1865523241362168) internal successors, (133658), 112644 states have internal predecessors, (133658), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:58,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112645 states to 112645 states and 133658 transitions. [2022-07-13 13:30:58,955 INFO L78 Accepts]: Start accepts. Automaton has 112645 states and 133658 transitions. Word has length 847 [2022-07-13 13:30:58,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:30:58,956 INFO L495 AbstractCegarLoop]: Abstraction has 112645 states and 133658 transitions. [2022-07-13 13:30:58,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 268.3333333333333) internal successors, (805), 3 states have internal predecessors, (805), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:30:58,957 INFO L276 IsEmpty]: Start isEmpty. Operand 112645 states and 133658 transitions. [2022-07-13 13:30:58,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 906 [2022-07-13 13:30:58,964 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:30:58,965 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:30:59,006 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-07-13 13:30:59,179 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,SelfDestructingSolverStorable7 [2022-07-13 13:30:59,180 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:30:59,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:30:59,181 INFO L85 PathProgramCache]: Analyzing trace with hash -1283175140, now seen corresponding path program 1 times [2022-07-13 13:30:59,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:30:59,181 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914002840] [2022-07-13 13:30:59,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:59,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:30:59,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:30:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 278 proven. 88 refuted. 0 times theorem prover too weak. 395 trivial. 0 not checked. [2022-07-13 13:30:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:30:59,740 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914002840] [2022-07-13 13:30:59,741 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914002840] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:30:59,741 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2076203915] [2022-07-13 13:30:59,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:30:59,741 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:30:59,741 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:30:59,757 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-13 13:30:59,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-13 13:31:00,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:00,025 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:31:00,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:31:00,166 INFO L134 CoverageAnalysis]: Checked inductivity of 761 backedges. 322 proven. 0 refuted. 0 times theorem prover too weak. 439 trivial. 0 not checked. [2022-07-13 13:31:00,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:31:00,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2076203915] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:31:00,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:31:00,168 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2022-07-13 13:31:00,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1350018853] [2022-07-13 13:31:00,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:31:00,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:31:00,169 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:31:00,169 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:31:00,169 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:31:00,170 INFO L87 Difference]: Start difference. First operand 112645 states and 133658 transitions. Second operand has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:06,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:31:06,283 INFO L93 Difference]: Finished difference Result 222626 states and 264689 transitions. [2022-07-13 13:31:06,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:31:06,284 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 905 [2022-07-13 13:31:06,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:31:06,458 INFO L225 Difference]: With dead ends: 222626 [2022-07-13 13:31:06,458 INFO L226 Difference]: Without dead ends: 112713 [2022-07-13 13:31:06,713 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 908 GetRequests, 905 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2022-07-13 13:31:06,716 INFO L413 NwaCegarLoop]: 620 mSDtfsCounter, 1639 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 4858 mSolverCounterSat, 804 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1639 SdHoareTripleChecker+Valid, 684 SdHoareTripleChecker+Invalid, 5662 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 804 IncrementalHoareTripleChecker+Valid, 4858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.4s IncrementalHoareTripleChecker+Time [2022-07-13 13:31:06,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1639 Valid, 684 Invalid, 5662 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [804 Valid, 4858 Invalid, 0 Unknown, 0 Unchecked, 5.4s Time] [2022-07-13 13:31:06,768 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112713 states. [2022-07-13 13:31:07,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112713 to 109914. [2022-07-13 13:31:07,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109914 states, 109913 states have (on average 1.1808976190259568) internal successors, (129796), 109913 states have internal predecessors, (129796), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:08,244 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109914 states to 109914 states and 129796 transitions. [2022-07-13 13:31:08,246 INFO L78 Accepts]: Start accepts. Automaton has 109914 states and 129796 transitions. Word has length 905 [2022-07-13 13:31:08,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:31:08,247 INFO L495 AbstractCegarLoop]: Abstraction has 109914 states and 129796 transitions. [2022-07-13 13:31:08,248 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 187.33333333333334) internal successors, (562), 3 states have internal predecessors, (562), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:08,248 INFO L276 IsEmpty]: Start isEmpty. Operand 109914 states and 129796 transitions. [2022-07-13 13:31:08,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1067 [2022-07-13 13:31:08,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:31:08,258 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:31:08,275 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-07-13 13:31:08,475 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:31:08,476 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:31:08,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:31:08,476 INFO L85 PathProgramCache]: Analyzing trace with hash -1305313812, now seen corresponding path program 1 times [2022-07-13 13:31:08,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:31:08,476 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076174398] [2022-07-13 13:31:08,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:08,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:31:08,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:09,325 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 702 proven. 218 refuted. 0 times theorem prover too weak. 171 trivial. 0 not checked. [2022-07-13 13:31:09,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:31:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076174398] [2022-07-13 13:31:09,326 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076174398] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:31:09,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [102950439] [2022-07-13 13:31:09,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:09,326 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:31:09,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:31:09,328 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) [2022-07-13 13:31:09,356 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-07-13 13:31:09,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:09,661 INFO L263 TraceCheckSpWp]: Trace formula consists of 1236 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-13 13:31:09,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:31:09,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1091 backedges. 830 proven. 0 refuted. 0 times theorem prover too weak. 261 trivial. 0 not checked. [2022-07-13 13:31:09,922 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:31:09,922 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [102950439] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:31:09,922 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:31:09,922 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-13 13:31:09,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [694368363] [2022-07-13 13:31:09,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:31:09,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-13 13:31:09,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:31:09,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-13 13:31:09,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:31:09,924 INFO L87 Difference]: Start difference. First operand 109914 states and 129796 transitions. Second operand has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:15,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:31:15,514 INFO L93 Difference]: Finished difference Result 258046 states and 303513 transitions. [2022-07-13 13:31:15,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-13 13:31:15,515 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1066 [2022-07-13 13:31:15,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:31:15,727 INFO L225 Difference]: With dead ends: 258046 [2022-07-13 13:31:15,727 INFO L226 Difference]: Without dead ends: 148132 [2022-07-13 13:31:15,780 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1071 GetRequests, 1065 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-13 13:31:15,780 INFO L413 NwaCegarLoop]: 2428 mSDtfsCounter, 1526 mSDsluCounter, 90 mSDsCounter, 0 mSdLazyCounter, 3766 mSolverCounterSat, 1718 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1526 SdHoareTripleChecker+Valid, 2518 SdHoareTripleChecker+Invalid, 5484 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1718 IncrementalHoareTripleChecker+Valid, 3766 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.8s IncrementalHoareTripleChecker+Time [2022-07-13 13:31:15,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1526 Valid, 2518 Invalid, 5484 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1718 Valid, 3766 Invalid, 0 Unknown, 0 Unchecked, 4.8s Time] [2022-07-13 13:31:16,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148132 states. [2022-07-13 13:31:17,311 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148132 to 141296. [2022-07-13 13:31:17,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 141296 states, 141295 states have (on average 1.1467072437099686) internal successors, (162024), 141295 states have internal predecessors, (162024), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:17,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141296 states to 141296 states and 162024 transitions. [2022-07-13 13:31:17,591 INFO L78 Accepts]: Start accepts. Automaton has 141296 states and 162024 transitions. Word has length 1066 [2022-07-13 13:31:17,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:31:17,592 INFO L495 AbstractCegarLoop]: Abstraction has 141296 states and 162024 transitions. [2022-07-13 13:31:17,592 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 269.0) internal successors, (807), 3 states have internal predecessors, (807), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:17,593 INFO L276 IsEmpty]: Start isEmpty. Operand 141296 states and 162024 transitions. [2022-07-13 13:31:17,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1082 [2022-07-13 13:31:17,614 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:31:17,635 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:31:17,654 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-07-13 13:31:17,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:31:17,837 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:31:17,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:31:17,837 INFO L85 PathProgramCache]: Analyzing trace with hash 1945863632, now seen corresponding path program 1 times [2022-07-13 13:31:17,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:31:17,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [76615533] [2022-07-13 13:31:17,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:17,838 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:31:18,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:18,483 INFO L134 CoverageAnalysis]: Checked inductivity of 1314 backedges. 724 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-13 13:31:18,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:31:18,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [76615533] [2022-07-13 13:31:18,484 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [76615533] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:31:18,484 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:31:18,484 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:31:18,485 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299767257] [2022-07-13 13:31:18,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:31:18,486 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:31:18,486 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:31:18,486 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:31:18,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:31:18,487 INFO L87 Difference]: Start difference. First operand 141296 states and 162024 transitions. Second operand has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:28,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:31:28,037 INFO L93 Difference]: Finished difference Result 409561 states and 481820 transitions. [2022-07-13 13:31:28,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:31:28,038 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1081 [2022-07-13 13:31:28,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:31:28,510 INFO L225 Difference]: With dead ends: 409561 [2022-07-13 13:31:28,511 INFO L226 Difference]: Without dead ends: 270997 [2022-07-13 13:31:28,599 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:31:28,600 INFO L413 NwaCegarLoop]: 972 mSDtfsCounter, 3266 mSDsluCounter, 222 mSDsCounter, 0 mSdLazyCounter, 6260 mSolverCounterSat, 2531 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3266 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 8791 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2531 IncrementalHoareTripleChecker+Valid, 6260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:31:28,601 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3266 Valid, 1194 Invalid, 8791 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2531 Valid, 6260 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-13 13:31:28,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 270997 states. [2022-07-13 13:31:31,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 270997 to 270979. [2022-07-13 13:31:31,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270979 states, 270978 states have (on average 1.1402143347430418) internal successors, (308973), 270978 states have internal predecessors, (308973), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:32,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270979 states to 270979 states and 308973 transitions. [2022-07-13 13:31:32,251 INFO L78 Accepts]: Start accepts. Automaton has 270979 states and 308973 transitions. Word has length 1081 [2022-07-13 13:31:32,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:31:32,255 INFO L495 AbstractCegarLoop]: Abstraction has 270979 states and 308973 transitions. [2022-07-13 13:31:32,256 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 179.0) internal successors, (716), 4 states have internal predecessors, (716), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:32,256 INFO L276 IsEmpty]: Start isEmpty. Operand 270979 states and 308973 transitions. [2022-07-13 13:31:32,264 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1127 [2022-07-13 13:31:32,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:31:32,265 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 13:31:32,266 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-13 13:31:32,266 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:31:32,266 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:31:32,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1451625618, now seen corresponding path program 1 times [2022-07-13 13:31:32,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:31:32,267 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2060864779] [2022-07-13 13:31:32,267 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:32,267 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:31:32,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:32,625 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 783 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-13 13:31:32,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:31:32,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2060864779] [2022-07-13 13:31:32,625 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2060864779] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:31:32,625 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-13 13:31:32,625 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-13 13:31:32,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532571177] [2022-07-13 13:31:32,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:31:32,628 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:31:32,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:31:32,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:31:32,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:31:32,629 INFO L87 Difference]: Start difference. First operand 270979 states and 308973 transitions. Second operand has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:43,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:31:43,818 INFO L93 Difference]: Finished difference Result 777025 states and 884622 transitions. [2022-07-13 13:31:43,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:31:43,819 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1126 [2022-07-13 13:31:43,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:31:44,787 INFO L225 Difference]: With dead ends: 777025 [2022-07-13 13:31:44,787 INFO L226 Difference]: Without dead ends: 508778 [2022-07-13 13:31:44,916 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-13 13:31:44,917 INFO L413 NwaCegarLoop]: 892 mSDtfsCounter, 2755 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 9438 mSolverCounterSat, 2013 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2755 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 11451 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2013 IncrementalHoareTripleChecker+Valid, 9438 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.0s IncrementalHoareTripleChecker+Time [2022-07-13 13:31:44,918 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2755 Valid, 1268 Invalid, 11451 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2013 Valid, 9438 Invalid, 0 Unknown, 0 Unchecked, 9.0s Time] [2022-07-13 13:31:45,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 508778 states. [2022-07-13 13:31:49,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 508778 to 403463. [2022-07-13 13:31:50,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 403463 states, 403462 states have (on average 1.1382435024859838) internal successors, (459238), 403462 states have internal predecessors, (459238), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:50,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 403463 states to 403463 states and 459238 transitions. [2022-07-13 13:31:50,942 INFO L78 Accepts]: Start accepts. Automaton has 403463 states and 459238 transitions. Word has length 1126 [2022-07-13 13:31:50,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:31:50,943 INFO L495 AbstractCegarLoop]: Abstraction has 403463 states and 459238 transitions. [2022-07-13 13:31:50,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.5) internal successors, (1126), 4 states have internal predecessors, (1126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:31:50,943 INFO L276 IsEmpty]: Start isEmpty. Operand 403463 states and 459238 transitions. [2022-07-13 13:31:50,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1199 [2022-07-13 13:31:50,957 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:31:50,959 INFO L195 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-13 13:31:50,959 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-13 13:31:50,959 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:31:50,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:31:50,960 INFO L85 PathProgramCache]: Analyzing trace with hash -1110859625, now seen corresponding path program 1 times [2022-07-13 13:31:50,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:31:50,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [536324816] [2022-07-13 13:31:50,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:50,961 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-13 13:31:51,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:51,914 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 255 proven. 485 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 13:31:51,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-13 13:31:51,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [536324816] [2022-07-13 13:31:51,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [536324816] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-13 13:31:51,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313521874] [2022-07-13 13:31:51,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:31:51,915 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-13 13:31:51,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-13 13:31:51,916 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) [2022-07-13 13:31:51,943 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-07-13 13:31:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-13 13:31:52,202 INFO L263 TraceCheckSpWp]: Trace formula consists of 1353 conjuncts, 3 conjunts are in the unsatisfiable core [2022-07-13 13:31:52,210 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-13 13:31:53,850 INFO L134 CoverageAnalysis]: Checked inductivity of 783 backedges. 740 proven. 0 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-07-13 13:31:53,851 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-13 13:31:53,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313521874] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-13 13:31:53,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-13 13:31:53,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-13 13:31:53,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892351499] [2022-07-13 13:31:53,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-13 13:31:53,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-13 13:31:53,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-13 13:31:53,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-13 13:31:53,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 13:31:53,853 INFO L87 Difference]: Start difference. First operand 403463 states and 459238 transitions. Second operand has 4 states, 4 states have (on average 289.0) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:32:02,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-13 13:32:02,205 INFO L93 Difference]: Finished difference Result 806993 states and 918584 transitions. [2022-07-13 13:32:02,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-13 13:32:02,206 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 289.0) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 1198 [2022-07-13 13:32:02,206 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-13 13:32:02,819 INFO L225 Difference]: With dead ends: 806993 [2022-07-13 13:32:02,820 INFO L226 Difference]: Without dead ends: 406262 [2022-07-13 13:32:02,989 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1203 GetRequests, 1196 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-07-13 13:32:02,990 INFO L413 NwaCegarLoop]: 868 mSDtfsCounter, 2090 mSDsluCounter, 212 mSDsCounter, 0 mSdLazyCounter, 7846 mSolverCounterSat, 1903 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2090 SdHoareTripleChecker+Valid, 1080 SdHoareTripleChecker+Invalid, 9749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1903 IncrementalHoareTripleChecker+Valid, 7846 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-13 13:32:02,990 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2090 Valid, 1080 Invalid, 9749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1903 Valid, 7846 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-13 13:32:03,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 406262 states. [2022-07-13 13:32:07,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 406262 to 402098. [2022-07-13 13:32:07,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 402098 states, 402097 states have (on average 1.1382502232048486) internal successors, (457687), 402097 states have internal predecessors, (457687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:32:08,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 402098 states to 402098 states and 457687 transitions. [2022-07-13 13:32:08,401 INFO L78 Accepts]: Start accepts. Automaton has 402098 states and 457687 transitions. Word has length 1198 [2022-07-13 13:32:08,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-13 13:32:08,402 INFO L495 AbstractCegarLoop]: Abstraction has 402098 states and 457687 transitions. [2022-07-13 13:32:08,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 289.0) internal successors, (1156), 3 states have internal predecessors, (1156), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-13 13:32:08,402 INFO L276 IsEmpty]: Start isEmpty. Operand 402098 states and 457687 transitions. [2022-07-13 13:32:08,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1318 [2022-07-13 13:32:08,418 INFO L187 NwaCegarLoop]: Found error trace [2022-07-13 13:32:08,418 INFO L195 NwaCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-13 13:32:08,435 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-07-13 13:32:08,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-07-13 13:32:08,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-13 13:32:08,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-13 13:32:08,632 INFO L85 PathProgramCache]: Analyzing trace with hash 1406081390, now seen corresponding path program 1 times [2022-07-13 13:32:08,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-13 13:32:08,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510498618] [2022-07-13 13:32:08,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-13 13:32:08,633 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms