./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/eca-rers2012/Problem19_label21.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version eb692b52 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/eca-rers2012/Problem19_label21.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 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 --- Real Ultimate output --- This is Ultimate 0.2.2-?-eb692b5 [2022-07-19 12:54:52,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-19 12:54:52,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-19 12:54:52,715 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-19 12:54:52,716 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-19 12:54:52,717 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-19 12:54:52,719 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-19 12:54:52,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-19 12:54:52,723 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-19 12:54:52,724 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-19 12:54:52,725 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-19 12:54:52,726 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-19 12:54:52,727 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-19 12:54:52,731 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-19 12:54:52,732 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-19 12:54:52,735 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-19 12:54:52,736 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-19 12:54:52,737 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-19 12:54:52,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-19 12:54:52,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-19 12:54:52,745 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-19 12:54:52,746 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-19 12:54:52,746 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-19 12:54:52,747 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-19 12:54:52,749 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-19 12:54:52,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-19 12:54:52,755 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-19 12:54:52,755 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-19 12:54:52,757 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-19 12:54:52,757 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-19 12:54:52,758 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-19 12:54:52,758 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-19 12:54:52,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-19 12:54:52,760 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-19 12:54:52,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-19 12:54:52,761 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-19 12:54:52,762 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-19 12:54:52,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-19 12:54:52,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-19 12:54:52,763 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-19 12:54:52,764 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-19 12:54:52,766 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-19 12:54:52,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-19 12:54:52,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-19 12:54:52,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-19 12:54:52,796 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-19 12:54:52,796 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-19 12:54:52,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-19 12:54:52,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-19 12:54:52,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-19 12:54:52,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-19 12:54:52,798 INFO L138 SettingsManager]: * Use SBE=true [2022-07-19 12:54:52,799 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-19 12:54:52,799 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-19 12:54:52,799 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-19 12:54:52,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-19 12:54:52,800 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-19 12:54:52,801 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-19 12:54:52,801 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-19 12:54:52,801 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-19 12:54:52,801 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-19 12:54:52,801 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-19 12:54:52,801 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:54:52,802 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-19 12:54:52,802 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-19 12:54:52,802 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-19 12:54:52,802 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-19 12:54:52,802 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-19 12:54:52,803 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-19 12:54:52,803 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-19 12:54:52,803 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-19 12:54:52,803 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 259e20ec3dce8325954803d27c5affb1e2b628aaa79b98f511469a5a906aac01 [2022-07-19 12:54:52,992 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-19 12:54:53,011 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-19 12:54:53,014 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-19 12:54:53,015 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-19 12:54:53,016 INFO L275 PluginConnector]: CDTParser initialized [2022-07-19 12:54:53,022 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-07-19 12:54:53,084 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423ce257/39d41fdb834940e28a5a70929ae2ce43/FLAGdeb309fe6 [2022-07-19 12:54:53,909 INFO L306 CDTParser]: Found 1 translation units. [2022-07-19 12:54:53,910 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/eca-rers2012/Problem19_label21.c [2022-07-19 12:54:53,944 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423ce257/39d41fdb834940e28a5a70929ae2ce43/FLAGdeb309fe6 [2022-07-19 12:54:54,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a423ce257/39d41fdb834940e28a5a70929ae2ce43 [2022-07-19 12:54:54,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-19 12:54:54,377 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-19 12:54:54,379 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-19 12:54:54,379 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-19 12:54:54,382 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-19 12:54:54,382 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:54:54" (1/1) ... [2022-07-19 12:54:54,383 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c7b5c2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:54, skipping insertion in model container [2022-07-19 12:54:54,384 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.07 12:54:54" (1/1) ... [2022-07-19 12:54:54,390 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-19 12:54:54,549 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-19 12:54:54,836 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_label21.c[2361,2374] [2022-07-19 12:54:55,932 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:54:55,945 INFO L203 MainTranslator]: Completed pre-run [2022-07-19 12:54:55,972 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_label21.c[2361,2374] [2022-07-19 12:54:56,654 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-19 12:54:56,687 INFO L208 MainTranslator]: Completed translation [2022-07-19 12:54:56,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56 WrapperNode [2022-07-19 12:54:56,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-19 12:54:56,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-19 12:54:56,688 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-19 12:54:56,688 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-19 12:54:56,694 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:56,790 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:57,703 INFO L137 Inliner]: procedures = 19, calls = 13, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 9425 [2022-07-19 12:54:57,704 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-19 12:54:57,705 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-19 12:54:57,705 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-19 12:54:57,705 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-19 12:54:57,713 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:57,713 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:57,965 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:57,979 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:58,298 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:58,335 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:58,386 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:58,613 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-19 12:54:58,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-19 12:54:58,615 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-19 12:54:58,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-19 12:54:58,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (1/1) ... [2022-07-19 12:54:58,623 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-19 12:54:58,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:54:58,649 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-19 12:54:58,667 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-19 12:54:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-19 12:54:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-19 12:54:58,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-19 12:54:58,691 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-19 12:54:58,755 INFO L234 CfgBuilder]: Building ICFG [2022-07-19 12:54:58,756 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-19 12:55:05,369 INFO L275 CfgBuilder]: Performing block encoding [2022-07-19 12:55:05,396 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-19 12:55:05,397 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2022-07-19 12:55:05,402 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:55:05 BoogieIcfgContainer [2022-07-19 12:55:05,402 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-19 12:55:05,405 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-19 12:55:05,405 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-19 12:55:05,410 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-19 12:55:05,410 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.07 12:54:54" (1/3) ... [2022-07-19 12:55:05,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dfd18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:55:05, skipping insertion in model container [2022-07-19 12:55:05,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.07 12:54:56" (2/3) ... [2022-07-19 12:55:05,411 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11dfd18c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.07 12:55:05, skipping insertion in model container [2022-07-19 12:55:05,411 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.07 12:55:05" (3/3) ... [2022-07-19 12:55:05,412 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem19_label21.c [2022-07-19 12:55:05,425 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-19 12:55:05,425 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-19 12:55:05,499 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-19 12:55:05,505 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@74d66c55, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@16a4fd8a [2022-07-19 12:55:05,505 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-19 12:55:05,519 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) [2022-07-19 12:55:05,524 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2022-07-19 12:55:05,525 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:05,525 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:05,526 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:05,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:05,530 INFO L85 PathProgramCache]: Analyzing trace with hash -884752143, now seen corresponding path program 1 times [2022-07-19 12:55:05,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:05,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085393445] [2022-07-19 12:55:05,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:05,539 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:05,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:05,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:55:05,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:05,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085393445] [2022-07-19 12:55:05,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085393445] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:05,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:05,738 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:55:05,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216610825] [2022-07-19 12:55:05,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:05,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:05,746 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:05,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:05,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:55:05,777 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 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-07-19 12:55:12,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:12,666 INFO L93 Difference]: Finished difference Result 4975 states and 9416 transitions. [2022-07-19 12:55:12,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:55:12,668 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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 15 [2022-07-19 12:55:12,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:12,697 INFO L225 Difference]: With dead ends: 4975 [2022-07-19 12:55:12,697 INFO L226 Difference]: Without dead ends: 3163 [2022-07-19 12:55:12,704 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 [2022-07-19 12:55:12,707 INFO L413 NwaCegarLoop]: 1353 mSDtfsCounter, 1531 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 4670 mSolverCounterSat, 1123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1531 SdHoareTripleChecker+Valid, 1524 SdHoareTripleChecker+Invalid, 5793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1123 IncrementalHoareTripleChecker+Valid, 4670 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:12,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1531 Valid, 1524 Invalid, 5793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1123 Valid, 4670 Invalid, 0 Unknown, 0 Unchecked, 6.7s Time] [2022-07-19 12:55:12,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3163 states. [2022-07-19 12:55:12,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3163 to 3123. [2022-07-19 12:55:12,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3123 states, 3122 states have (on average 1.6268417680973735) internal successors, (5079), 3122 states have internal predecessors, (5079), 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) [2022-07-19 12:55:12,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3123 states to 3123 states and 5079 transitions. [2022-07-19 12:55:12,832 INFO L78 Accepts]: Start accepts. Automaton has 3123 states and 5079 transitions. Word has length 15 [2022-07-19 12:55:12,832 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:12,832 INFO L495 AbstractCegarLoop]: Abstraction has 3123 states and 5079 transitions. [2022-07-19 12:55:12,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 5.0) internal successors, (15), 2 states have internal predecessors, (15), 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) [2022-07-19 12:55:12,833 INFO L276 IsEmpty]: Start isEmpty. Operand 3123 states and 5079 transitions. [2022-07-19 12:55:12,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-07-19 12:55:12,835 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:12,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 12:55:12,835 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-19 12:55:12,836 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:12,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:12,836 INFO L85 PathProgramCache]: Analyzing trace with hash -843567897, now seen corresponding path program 1 times [2022-07-19 12:55:12,837 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:12,837 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191780735] [2022-07-19 12:55:12,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:12,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:12,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:12,956 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:55:12,957 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:12,957 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191780735] [2022-07-19 12:55:12,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191780735] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:12,958 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:12,958 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:55:12,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [967318882] [2022-07-19 12:55:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:12,961 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:12,961 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:12,961 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:12,962 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:55:12,962 INFO L87 Difference]: Start difference. First operand 3123 states and 5079 transitions. Second operand has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-07-19 12:55:19,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:19,022 INFO L93 Difference]: Finished difference Result 9055 states and 14814 transitions. [2022-07-19 12:55:19,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:55:19,027 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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 86 [2022-07-19 12:55:19,027 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:19,049 INFO L225 Difference]: With dead ends: 9055 [2022-07-19 12:55:19,049 INFO L226 Difference]: Without dead ends: 5934 [2022-07-19 12:55:19,054 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 [2022-07-19 12:55:19,055 INFO L413 NwaCegarLoop]: 1324 mSDtfsCounter, 1536 mSDsluCounter, 219 mSDsCounter, 0 mSdLazyCounter, 4266 mSolverCounterSat, 1472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1536 SdHoareTripleChecker+Valid, 1543 SdHoareTripleChecker+Invalid, 5738 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1472 IncrementalHoareTripleChecker+Valid, 4266 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:19,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1536 Valid, 1543 Invalid, 5738 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1472 Valid, 4266 Invalid, 0 Unknown, 0 Unchecked, 5.9s Time] [2022-07-19 12:55:19,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5934 states. [2022-07-19 12:55:19,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5934 to 5910. [2022-07-19 12:55:19,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5910 states, 5909 states have (on average 1.4235911321712642) internal successors, (8412), 5909 states have internal predecessors, (8412), 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) [2022-07-19 12:55:19,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5910 states to 5910 states and 8412 transitions. [2022-07-19 12:55:19,174 INFO L78 Accepts]: Start accepts. Automaton has 5910 states and 8412 transitions. Word has length 86 [2022-07-19 12:55:19,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:19,175 INFO L495 AbstractCegarLoop]: Abstraction has 5910 states and 8412 transitions. [2022-07-19 12:55:19,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 28.666666666666668) internal successors, (86), 2 states have internal predecessors, (86), 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) [2022-07-19 12:55:19,176 INFO L276 IsEmpty]: Start isEmpty. Operand 5910 states and 8412 transitions. [2022-07-19 12:55:19,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-07-19 12:55:19,178 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:19,178 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-07-19 12:55:19,179 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-19 12:55:19,179 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:19,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:19,180 INFO L85 PathProgramCache]: Analyzing trace with hash 1253291785, now seen corresponding path program 1 times [2022-07-19 12:55:19,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:19,180 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1474987520] [2022-07-19 12:55:19,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:19,181 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:19,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:55:19,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:19,367 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1474987520] [2022-07-19 12:55:19,368 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1474987520] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:19,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:19,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:55:19,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213972927] [2022-07-19 12:55:19,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:19,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:55:19,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:19,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:55:19,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:55:19,372 INFO L87 Difference]: Start difference. First operand 5910 states and 8412 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-07-19 12:55:27,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:27,969 INFO L93 Difference]: Finished difference Result 18680 states and 26154 transitions. [2022-07-19 12:55:27,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:55:27,970 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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 98 [2022-07-19 12:55:27,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:28,012 INFO L225 Difference]: With dead ends: 18680 [2022-07-19 12:55:28,012 INFO L226 Difference]: Without dead ends: 12772 [2022-07-19 12:55:28,021 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 [2022-07-19 12:55:28,022 INFO L413 NwaCegarLoop]: 1008 mSDtfsCounter, 4363 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 7341 mSolverCounterSat, 2202 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4363 SdHoareTripleChecker+Valid, 1283 SdHoareTripleChecker+Invalid, 9543 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2202 IncrementalHoareTripleChecker+Valid, 7341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.3s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:28,022 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4363 Valid, 1283 Invalid, 9543 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2202 Valid, 7341 Invalid, 0 Unknown, 0 Unchecked, 8.3s Time] [2022-07-19 12:55:28,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12772 states. [2022-07-19 12:55:28,203 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12772 to 12761. [2022-07-19 12:55:28,221 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12761 states, 12760 states have (on average 1.3467084639498432) internal successors, (17184), 12760 states have internal predecessors, (17184), 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) [2022-07-19 12:55:28,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12761 states to 12761 states and 17184 transitions. [2022-07-19 12:55:28,246 INFO L78 Accepts]: Start accepts. Automaton has 12761 states and 17184 transitions. Word has length 98 [2022-07-19 12:55:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:28,247 INFO L495 AbstractCegarLoop]: Abstraction has 12761 states and 17184 transitions. [2022-07-19 12:55:28,247 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 3 states have internal predecessors, (98), 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) [2022-07-19 12:55:28,248 INFO L276 IsEmpty]: Start isEmpty. Operand 12761 states and 17184 transitions. [2022-07-19 12:55:28,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 353 [2022-07-19 12:55:28,258 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:28,258 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:28,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-19 12:55:28,259 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:28,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:28,260 INFO L85 PathProgramCache]: Analyzing trace with hash -894033946, now seen corresponding path program 1 times [2022-07-19 12:55:28,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:28,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2028999506] [2022-07-19 12:55:28,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:28,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:28,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:28,621 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 141 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-07-19 12:55:28,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:28,622 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2028999506] [2022-07-19 12:55:28,622 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2028999506] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:28,622 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:28,623 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:55:28,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [87763007] [2022-07-19 12:55:28,623 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:28,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:55:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:55:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:55:28,626 INFO L87 Difference]: Start difference. First operand 12761 states and 17184 transitions. Second operand has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-07-19 12:55:36,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:36,871 INFO L93 Difference]: Finished difference Result 31026 states and 41181 transitions. [2022-07-19 12:55:36,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:55:36,875 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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 352 [2022-07-19 12:55:36,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:36,916 INFO L225 Difference]: With dead ends: 31026 [2022-07-19 12:55:36,916 INFO L226 Difference]: Without dead ends: 19632 [2022-07-19 12:55:36,930 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 [2022-07-19 12:55:36,931 INFO L413 NwaCegarLoop]: 1799 mSDtfsCounter, 3757 mSDsluCounter, 354 mSDsCounter, 0 mSdLazyCounter, 9440 mSolverCounterSat, 425 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3757 SdHoareTripleChecker+Valid, 2153 SdHoareTripleChecker+Invalid, 9865 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 425 IncrementalHoareTripleChecker+Valid, 9440 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:36,931 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3757 Valid, 2153 Invalid, 9865 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [425 Valid, 9440 Invalid, 0 Unknown, 0 Unchecked, 8.0s Time] [2022-07-19 12:55:36,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19632 states. [2022-07-19 12:55:37,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19632 to 19608. [2022-07-19 12:55:37,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2585811189881164) internal successors, (24677), 19607 states have internal predecessors, (24677), 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) [2022-07-19 12:55:37,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24677 transitions. [2022-07-19 12:55:37,256 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24677 transitions. Word has length 352 [2022-07-19 12:55:37,258 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:37,258 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24677 transitions. [2022-07-19 12:55:37,258 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 85.0) internal successors, (340), 3 states have internal predecessors, (340), 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) [2022-07-19 12:55:37,259 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24677 transitions. [2022-07-19 12:55:37,263 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 381 [2022-07-19 12:55:37,264 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:37,264 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:37,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-19 12:55:37,266 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:37,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:37,267 INFO L85 PathProgramCache]: Analyzing trace with hash -87675188, now seen corresponding path program 1 times [2022-07-19 12:55:37,267 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:37,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002113857] [2022-07-19 12:55:37,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:37,268 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:37,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:37,502 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 154 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-19 12:55:37,503 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:37,503 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002113857] [2022-07-19 12:55:37,503 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002113857] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:37,503 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:37,503 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:55:37,505 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1534826166] [2022-07-19 12:55:37,505 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:37,505 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:55:37,506 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:37,506 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:55:37,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:55:37,506 INFO L87 Difference]: Start difference. First operand 19608 states and 24677 transitions. Second operand has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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) [2022-07-19 12:55:44,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:44,277 INFO L93 Difference]: Finished difference Result 36515 states and 46635 transitions. [2022-07-19 12:55:44,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:55:44,277 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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 380 [2022-07-19 12:55:44,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:44,309 INFO L225 Difference]: With dead ends: 36515 [2022-07-19 12:55:44,309 INFO L226 Difference]: Without dead ends: 19608 [2022-07-19 12:55:44,324 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 [2022-07-19 12:55:44,325 INFO L413 NwaCegarLoop]: 1771 mSDtfsCounter, 1140 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 7317 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 2113 SdHoareTripleChecker+Invalid, 7325 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 7317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:44,325 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 2113 Invalid, 7325 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 7317 Invalid, 0 Unknown, 0 Unchecked, 6.6s Time] [2022-07-19 12:55:44,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19608 states. [2022-07-19 12:55:44,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19608 to 19608. [2022-07-19 12:55:44,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19608 states, 19607 states have (on average 1.2579180904778906) internal successors, (24664), 19607 states have internal predecessors, (24664), 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) [2022-07-19 12:55:44,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19608 states to 19608 states and 24664 transitions. [2022-07-19 12:55:44,573 INFO L78 Accepts]: Start accepts. Automaton has 19608 states and 24664 transitions. Word has length 380 [2022-07-19 12:55:44,573 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:44,573 INFO L495 AbstractCegarLoop]: Abstraction has 19608 states and 24664 transitions. [2022-07-19 12:55:44,574 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 95.0) internal successors, (380), 3 states have internal predecessors, (380), 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) [2022-07-19 12:55:44,577 INFO L276 IsEmpty]: Start isEmpty. Operand 19608 states and 24664 transitions. [2022-07-19 12:55:44,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2022-07-19 12:55:44,586 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:44,586 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:44,587 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-19 12:55:44,587 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:44,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:44,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1693058845, now seen corresponding path program 1 times [2022-07-19 12:55:44,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:44,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822325751] [2022-07-19 12:55:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:44,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:44,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:44,891 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2022-07-19 12:55:44,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:44,891 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [822325751] [2022-07-19 12:55:44,892 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [822325751] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:44,892 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:44,892 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:55:44,892 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [83045340] [2022-07-19 12:55:44,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:44,893 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:44,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:44,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:44,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:55:44,895 INFO L87 Difference]: Start difference. First operand 19608 states and 24664 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:55:51,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:51,169 INFO L93 Difference]: Finished difference Result 53069 states and 68125 transitions. [2022-07-19 12:55:51,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:55:51,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 570 [2022-07-19 12:55:51,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:51,240 INFO L225 Difference]: With dead ends: 53069 [2022-07-19 12:55:51,240 INFO L226 Difference]: Without dead ends: 36193 [2022-07-19 12:55:51,259 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 [2022-07-19 12:55:51,260 INFO L413 NwaCegarLoop]: 718 mSDtfsCounter, 2111 mSDsluCounter, 270 mSDsCounter, 0 mSdLazyCounter, 5117 mSolverCounterSat, 434 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2111 SdHoareTripleChecker+Valid, 988 SdHoareTripleChecker+Invalid, 5551 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 434 IncrementalHoareTripleChecker+Valid, 5117 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:51,260 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2111 Valid, 988 Invalid, 5551 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [434 Valid, 5117 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-07-19 12:55:51,289 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36193 states. [2022-07-19 12:55:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36193 to 36189. [2022-07-19 12:55:51,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36189 states, 36188 states have (on average 1.2502210677572676) internal successors, (45243), 36188 states have internal predecessors, (45243), 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) [2022-07-19 12:55:51,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36189 states to 36189 states and 45243 transitions. [2022-07-19 12:55:51,755 INFO L78 Accepts]: Start accepts. Automaton has 36189 states and 45243 transitions. Word has length 570 [2022-07-19 12:55:51,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:51,756 INFO L495 AbstractCegarLoop]: Abstraction has 36189 states and 45243 transitions. [2022-07-19 12:55:51,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:55:51,757 INFO L276 IsEmpty]: Start isEmpty. Operand 36189 states and 45243 transitions. [2022-07-19 12:55:51,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 588 [2022-07-19 12:55:51,768 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:51,768 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:51,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-19 12:55:51,769 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:51,770 INFO L85 PathProgramCache]: Analyzing trace with hash 3304489, now seen corresponding path program 1 times [2022-07-19 12:55:51,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:51,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1651634035] [2022-07-19 12:55:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:51,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:52,042 INFO L134 CoverageAnalysis]: Checked inductivity of 109 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2022-07-19 12:55:52,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:52,043 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1651634035] [2022-07-19 12:55:52,043 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1651634035] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:52,043 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:52,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:55:52,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94284861] [2022-07-19 12:55:52,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:52,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:52,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:52,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:52,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:55:52,046 INFO L87 Difference]: Start difference. First operand 36189 states and 45243 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:55:57,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:55:57,413 INFO L93 Difference]: Finished difference Result 80596 states and 102201 transitions. [2022-07-19 12:55:57,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:55:57,413 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 587 [2022-07-19 12:55:57,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:55:57,634 INFO L225 Difference]: With dead ends: 80596 [2022-07-19 12:55:57,635 INFO L226 Difference]: Without dead ends: 47139 [2022-07-19 12:55:57,652 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 [2022-07-19 12:55:57,655 INFO L413 NwaCegarLoop]: 702 mSDtfsCounter, 1387 mSDsluCounter, 50 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 2136 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1387 SdHoareTripleChecker+Valid, 752 SdHoareTripleChecker+Invalid, 6061 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2136 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2022-07-19 12:55:57,656 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1387 Valid, 752 Invalid, 6061 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2136 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2022-07-19 12:55:57,695 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47139 states. [2022-07-19 12:55:58,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47139 to 47122. [2022-07-19 12:55:58,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47122 states, 47121 states have (on average 1.2294306148001952) internal successors, (57932), 47121 states have internal predecessors, (57932), 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) [2022-07-19 12:55:58,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47122 states to 47122 states and 57932 transitions. [2022-07-19 12:55:58,098 INFO L78 Accepts]: Start accepts. Automaton has 47122 states and 57932 transitions. Word has length 587 [2022-07-19 12:55:58,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:55:58,098 INFO L495 AbstractCegarLoop]: Abstraction has 47122 states and 57932 transitions. [2022-07-19 12:55:58,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:55:58,099 INFO L276 IsEmpty]: Start isEmpty. Operand 47122 states and 57932 transitions. [2022-07-19 12:55:58,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 626 [2022-07-19 12:55:58,111 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:55:58,111 INFO L195 NwaCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-19 12:55:58,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-19 12:55:58,112 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:55:58,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:55:58,112 INFO L85 PathProgramCache]: Analyzing trace with hash -283264241, now seen corresponding path program 1 times [2022-07-19 12:55:58,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:55:58,113 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [524544602] [2022-07-19 12:55:58,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:55:58,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:55:58,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:55:58,393 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 25 proven. 0 refuted. 0 times theorem prover too weak. 122 trivial. 0 not checked. [2022-07-19 12:55:58,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:55:58,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [524544602] [2022-07-19 12:55:58,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [524544602] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:55:58,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:55:58,394 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-19 12:55:58,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197699963] [2022-07-19 12:55:58,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:55:58,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:55:58,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:55:58,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:55:58,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:55:58,396 INFO L87 Difference]: Start difference. First operand 47122 states and 57932 transitions. Second operand has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:56:04,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:56:04,634 INFO L93 Difference]: Finished difference Result 128613 states and 160507 transitions. [2022-07-19 12:56:04,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:56:04,634 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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 625 [2022-07-19 12:56:04,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:56:04,727 INFO L225 Difference]: With dead ends: 128613 [2022-07-19 12:56:04,728 INFO L226 Difference]: Without dead ends: 84223 [2022-07-19 12:56:04,747 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 [2022-07-19 12:56:04,748 INFO L413 NwaCegarLoop]: 1793 mSDtfsCounter, 1350 mSDsluCounter, 269 mSDsCounter, 0 mSdLazyCounter, 4297 mSolverCounterSat, 1430 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1350 SdHoareTripleChecker+Valid, 2062 SdHoareTripleChecker+Invalid, 5727 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1430 IncrementalHoareTripleChecker+Valid, 4297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-07-19 12:56:04,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1350 Valid, 2062 Invalid, 5727 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1430 Valid, 4297 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-07-19 12:56:04,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84223 states. [2022-07-19 12:56:05,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84223 to 82831. [2022-07-19 12:56:05,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82831 states, 82830 states have (on average 1.1579741639502596) internal successors, (95915), 82830 states have internal predecessors, (95915), 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) [2022-07-19 12:56:05,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82831 states to 82831 states and 95915 transitions. [2022-07-19 12:56:05,513 INFO L78 Accepts]: Start accepts. Automaton has 82831 states and 95915 transitions. Word has length 625 [2022-07-19 12:56:05,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:56:05,514 INFO L495 AbstractCegarLoop]: Abstraction has 82831 states and 95915 transitions. [2022-07-19 12:56:05,514 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.0) internal successors, (504), 2 states have internal predecessors, (504), 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) [2022-07-19 12:56:05,515 INFO L276 IsEmpty]: Start isEmpty. Operand 82831 states and 95915 transitions. [2022-07-19 12:56:05,522 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 800 [2022-07-19 12:56:05,522 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:56:05,522 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:56:05,523 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-19 12:56:05,523 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:56:05,523 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:56:05,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1679955262, now seen corresponding path program 1 times [2022-07-19 12:56:05,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:56:05,524 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1875671225] [2022-07-19 12:56:05,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:56:05,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:56:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:56:06,232 INFO L134 CoverageAnalysis]: Checked inductivity of 416 backedges. 207 proven. 0 refuted. 0 times theorem prover too weak. 209 trivial. 0 not checked. [2022-07-19 12:56:06,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:56:06,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1875671225] [2022-07-19 12:56:06,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1875671225] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:56:06,233 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:56:06,233 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:56:06,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [8720391] [2022-07-19 12:56:06,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:56:06,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:56:06,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:56:06,235 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:56:06,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:56:06,236 INFO L87 Difference]: Start difference. First operand 82831 states and 95915 transitions. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-07-19 12:56:16,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:56:16,910 INFO L93 Difference]: Finished difference Result 265595 states and 313044 transitions. [2022-07-19 12:56:16,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:56:16,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 799 [2022-07-19 12:56:16,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:56:17,184 INFO L225 Difference]: With dead ends: 265595 [2022-07-19 12:56:17,184 INFO L226 Difference]: Without dead ends: 185496 [2022-07-19 12:56:17,237 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 [2022-07-19 12:56:17,237 INFO L413 NwaCegarLoop]: 894 mSDtfsCounter, 3318 mSDsluCounter, 273 mSDsCounter, 0 mSdLazyCounter, 8783 mSolverCounterSat, 3101 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3318 SdHoareTripleChecker+Valid, 1167 SdHoareTripleChecker+Invalid, 11884 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3101 IncrementalHoareTripleChecker+Valid, 8783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.7s IncrementalHoareTripleChecker+Time [2022-07-19 12:56:17,238 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3318 Valid, 1167 Invalid, 11884 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3101 Valid, 8783 Invalid, 0 Unknown, 0 Unchecked, 9.7s Time] [2022-07-19 12:56:17,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185496 states. [2022-07-19 12:56:19,021 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185496 to 179882. [2022-07-19 12:56:19,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 179882 states, 179881 states have (on average 1.146485732234088) internal successors, (206231), 179881 states have internal predecessors, (206231), 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) [2022-07-19 12:56:19,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179882 states to 179882 states and 206231 transitions. [2022-07-19 12:56:19,692 INFO L78 Accepts]: Start accepts. Automaton has 179882 states and 206231 transitions. Word has length 799 [2022-07-19 12:56:19,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:56:19,694 INFO L495 AbstractCegarLoop]: Abstraction has 179882 states and 206231 transitions. [2022-07-19 12:56:19,694 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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) [2022-07-19 12:56:19,695 INFO L276 IsEmpty]: Start isEmpty. Operand 179882 states and 206231 transitions. [2022-07-19 12:56:19,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 895 [2022-07-19 12:56:19,705 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:56:19,706 INFO L195 NwaCegarLoop]: trace histogram [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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:56:19,706 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-19 12:56:19,706 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:56:19,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:56:19,707 INFO L85 PathProgramCache]: Analyzing trace with hash -569438715, now seen corresponding path program 1 times [2022-07-19 12:56:19,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:56:19,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [203282843] [2022-07-19 12:56:19,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:56:19,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:56:20,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:56:20,312 INFO L134 CoverageAnalysis]: Checked inductivity of 513 backedges. 38 proven. 0 refuted. 0 times theorem prover too weak. 475 trivial. 0 not checked. [2022-07-19 12:56:20,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:56:20,312 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [203282843] [2022-07-19 12:56:20,312 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [203282843] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:56:20,313 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:56:20,313 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-19 12:56:20,313 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1789749084] [2022-07-19 12:56:20,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:56:20,314 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:56:20,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:56:20,315 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:56:20,315 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:56:20,315 INFO L87 Difference]: Start difference. First operand 179882 states and 206231 transitions. Second operand has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-07-19 12:56:27,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:56:27,391 INFO L93 Difference]: Finished difference Result 415871 states and 484360 transitions. [2022-07-19 12:56:27,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:56:27,392 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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 894 [2022-07-19 12:56:27,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:56:27,743 INFO L225 Difference]: With dead ends: 415871 [2022-07-19 12:56:27,743 INFO L226 Difference]: Without dead ends: 238721 [2022-07-19 12:56:27,824 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-19 12:56:27,825 INFO L413 NwaCegarLoop]: 3095 mSDtfsCounter, 1482 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 4176 mSolverCounterSat, 1625 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1482 SdHoareTripleChecker+Valid, 3270 SdHoareTripleChecker+Invalid, 5801 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1625 IncrementalHoareTripleChecker+Valid, 4176 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2022-07-19 12:56:27,826 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1482 Valid, 3270 Invalid, 5801 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1625 Valid, 4176 Invalid, 0 Unknown, 0 Unchecked, 5.6s Time] [2022-07-19 12:56:28,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238721 states. [2022-07-19 12:56:30,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238721 to 231778. [2022-07-19 12:56:30,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231778 states, 231777 states have (on average 1.1421021067664177) internal successors, (264713), 231777 states have internal predecessors, (264713), 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) [2022-07-19 12:56:31,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231778 states to 231778 states and 264713 transitions. [2022-07-19 12:56:31,046 INFO L78 Accepts]: Start accepts. Automaton has 231778 states and 264713 transitions. Word has length 894 [2022-07-19 12:56:31,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:56:31,047 INFO L495 AbstractCegarLoop]: Abstraction has 231778 states and 264713 transitions. [2022-07-19 12:56:31,047 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 168.33333333333334) internal successors, (505), 3 states have internal predecessors, (505), 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) [2022-07-19 12:56:31,047 INFO L276 IsEmpty]: Start isEmpty. Operand 231778 states and 264713 transitions. [2022-07-19 12:56:31,060 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 947 [2022-07-19 12:56:31,060 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:56:31,061 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 1] [2022-07-19 12:56:31,061 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-19 12:56:31,061 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:56:31,062 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:56:31,062 INFO L85 PathProgramCache]: Analyzing trace with hash 1588434996, now seen corresponding path program 1 times [2022-07-19 12:56:31,062 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:56:31,062 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2012500493] [2022-07-19 12:56:31,062 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:56:31,063 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:56:31,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:56:31,561 INFO L134 CoverageAnalysis]: Checked inductivity of 931 backedges. 341 proven. 0 refuted. 0 times theorem prover too weak. 590 trivial. 0 not checked. [2022-07-19 12:56:31,561 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:56:31,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2012500493] [2022-07-19 12:56:31,561 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2012500493] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:56:31,562 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-19 12:56:31,562 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-19 12:56:31,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223127923] [2022-07-19 12:56:31,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:56:31,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-19 12:56:31,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:56:31,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-19 12:56:31,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-07-19 12:56:31,564 INFO L87 Difference]: Start difference. First operand 231778 states and 264713 transitions. Second operand has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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) [2022-07-19 12:56:43,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:56:43,448 INFO L93 Difference]: Finished difference Result 694266 states and 808295 transitions. [2022-07-19 12:56:43,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-07-19 12:56:43,449 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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 946 [2022-07-19 12:56:43,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:56:44,120 INFO L225 Difference]: With dead ends: 694266 [2022-07-19 12:56:44,120 INFO L226 Difference]: Without dead ends: 465220 [2022-07-19 12:56:44,204 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 [2022-07-19 12:56:44,211 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 5274 mSDsluCounter, 158 mSDsCounter, 0 mSdLazyCounter, 5983 mSolverCounterSat, 4379 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5274 SdHoareTripleChecker+Valid, 911 SdHoareTripleChecker+Invalid, 10362 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4379 IncrementalHoareTripleChecker+Valid, 5983 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.5s IncrementalHoareTripleChecker+Time [2022-07-19 12:56:44,213 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5274 Valid, 911 Invalid, 10362 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4379 Valid, 5983 Invalid, 0 Unknown, 0 Unchecked, 9.5s Time] [2022-07-19 12:56:44,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 465220 states. [2022-07-19 12:56:49,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 465220 to 465199. [2022-07-19 12:56:49,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 465199 states, 465198 states have (on average 1.1293900661653749) internal successors, (525390), 465198 states have internal predecessors, (525390), 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) [2022-07-19 12:56:50,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 465199 states to 465199 states and 525390 transitions. [2022-07-19 12:56:50,848 INFO L78 Accepts]: Start accepts. Automaton has 465199 states and 525390 transitions. Word has length 946 [2022-07-19 12:56:50,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-19 12:56:50,849 INFO L495 AbstractCegarLoop]: Abstraction has 465199 states and 525390 transitions. [2022-07-19 12:56:50,849 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 145.25) internal successors, (581), 4 states have internal predecessors, (581), 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) [2022-07-19 12:56:50,849 INFO L276 IsEmpty]: Start isEmpty. Operand 465199 states and 525390 transitions. [2022-07-19 12:56:50,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1159 [2022-07-19 12:56:50,899 INFO L187 NwaCegarLoop]: Found error trace [2022-07-19 12:56:50,900 INFO L195 NwaCegarLoop]: trace histogram [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, 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, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2022-07-19 12:56:50,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-19 12:56:50,900 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-19 12:56:50,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-19 12:56:50,901 INFO L85 PathProgramCache]: Analyzing trace with hash 1914084469, now seen corresponding path program 1 times [2022-07-19 12:56:50,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-19 12:56:50,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050302074] [2022-07-19 12:56:50,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:56:50,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-19 12:56:51,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:56:51,680 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 809 proven. 218 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2022-07-19 12:56:51,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-19 12:56:51,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050302074] [2022-07-19 12:56:51,681 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050302074] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-19 12:56:51,681 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1062768702] [2022-07-19 12:56:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-19 12:56:51,682 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-19 12:56:51,682 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-19 12:56:51,687 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-19 12:56:51,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-19 12:56:52,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-19 12:56:52,009 INFO L263 TraceCheckSpWp]: Trace formula consists of 1337 conjuncts, 2 conjunts are in the unsatisfiable core [2022-07-19 12:56:52,035 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-19 12:56:52,628 INFO L134 CoverageAnalysis]: Checked inductivity of 1183 backedges. 952 proven. 0 refuted. 0 times theorem prover too weak. 231 trivial. 0 not checked. [2022-07-19 12:56:52,629 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-19 12:56:52,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1062768702] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-19 12:56:52,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-19 12:56:52,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 8 [2022-07-19 12:56:52,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1669192217] [2022-07-19 12:56:52,630 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-19 12:56:52,631 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-19 12:56:52,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-19 12:56:52,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-19 12:56:52,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:56:52,632 INFO L87 Difference]: Start difference. First operand 465199 states and 525390 transitions. Second operand has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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) [2022-07-19 12:57:01,228 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-19 12:57:01,228 INFO L93 Difference]: Finished difference Result 1054605 states and 1189985 transitions. [2022-07-19 12:57:01,228 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-19 12:57:01,229 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 309.6666666666667) internal successors, (929), 3 states have internal predecessors, (929), 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 1158 [2022-07-19 12:57:01,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-19 12:57:02,150 INFO L225 Difference]: With dead ends: 1054605 [2022-07-19 12:57:02,150 INFO L226 Difference]: Without dead ends: 585307 [2022-07-19 12:57:02,327 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1163 GetRequests, 1157 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-07-19 12:57:02,328 INFO L413 NwaCegarLoop]: 2606 mSDtfsCounter, 1408 mSDsluCounter, 88 mSDsCounter, 0 mSdLazyCounter, 3786 mSolverCounterSat, 1636 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1408 SdHoareTripleChecker+Valid, 2694 SdHoareTripleChecker+Invalid, 5422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1636 IncrementalHoareTripleChecker+Valid, 3786 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.9s IncrementalHoareTripleChecker+Time [2022-07-19 12:57:02,328 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1408 Valid, 2694 Invalid, 5422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1636 Valid, 3786 Invalid, 0 Unknown, 0 Unchecked, 4.9s Time] [2022-07-19 12:57:02,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 585307 states.