./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/locks/test_locks_14-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version ae007674 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/AutomizerTermination.xml -i ../sv-benchmarks/c/locks/test_locks_14-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-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(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 09:15:15,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 09:15:15,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 09:15:15,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 09:15:15,692 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 09:15:15,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 09:15:15,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 09:15:15,695 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 09:15:15,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 09:15:15,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 09:15:15,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 09:15:15,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 09:15:15,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 09:15:15,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 09:15:15,701 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 09:15:15,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 09:15:15,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 09:15:15,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 09:15:15,704 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 09:15:15,705 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 09:15:15,706 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 09:15:15,707 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 09:15:15,708 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 09:15:15,708 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 09:15:15,710 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 09:15:15,710 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 09:15:15,710 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 09:15:15,711 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 09:15:15,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 09:15:15,731 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 09:15:15,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 09:15:15,732 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 09:15:15,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 09:15:15,733 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 09:15:15,734 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 09:15:15,734 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 09:15:15,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 09:15:15,735 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 09:15:15,735 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 09:15:15,736 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 09:15:15,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 09:15:15,737 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-12-28 09:15:15,766 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 09:15:15,766 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 09:15:15,766 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 09:15:15,767 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 09:15:15,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 09:15:15,769 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 09:15:15,769 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 09:15:15,769 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-12-28 09:15:15,769 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-12-28 09:15:15,769 INFO L138 SettingsManager]: * Use old map elimination=false [2021-12-28 09:15:15,770 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-12-28 09:15:15,770 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-12-28 09:15:15,770 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-12-28 09:15:15,770 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 09:15:15,770 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-12-28 09:15:15,771 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-12-28 09:15:15,772 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 09:15:15,772 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-28 09:15:15,772 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-12-28 09:15:15,772 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 09:15:15,772 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-12-28 09:15:15,772 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 09:15:15,773 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 09:15:15,773 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 09:15:15,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 09:15:15,774 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-12-28 09:15:15,774 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75f53c568c86c59ddc62d2fd150ff0a5ed9b51ea17cada3ff1a95dec57d9167c [2021-12-28 09:15:16,034 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 09:15:16,058 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 09:15:16,061 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 09:15:16,062 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 09:15:16,075 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 09:15:16,076 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-28 09:15:16,122 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c627e43a7/d982143701b046d592df6ae295f38ba0/FLAGbf282428e [2021-12-28 09:15:16,456 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 09:15:16,457 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/locks/test_locks_14-2.c [2021-12-28 09:15:16,464 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c627e43a7/d982143701b046d592df6ae295f38ba0/FLAGbf282428e [2021-12-28 09:15:16,887 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c627e43a7/d982143701b046d592df6ae295f38ba0 [2021-12-28 09:15:16,890 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 09:15:16,891 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 09:15:16,912 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 09:15:16,913 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 09:15:16,915 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 09:15:16,916 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:15:16" (1/1) ... [2021-12-28 09:15:16,916 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@565c39d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:16, skipping insertion in model container [2021-12-28 09:15:16,917 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 09:15:16" (1/1) ... [2021-12-28 09:15:16,921 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 09:15:16,951 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 09:15:17,196 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/locks/test_locks_14-2.c[5305,5318] [2021-12-28 09:15:17,199 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:15:17,211 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 09:15:17,252 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/locks/test_locks_14-2.c[5305,5318] [2021-12-28 09:15:17,263 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 09:15:17,287 INFO L208 MainTranslator]: Completed translation [2021-12-28 09:15:17,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17 WrapperNode [2021-12-28 09:15:17,304 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 09:15:17,305 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 09:15:17,305 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 09:15:17,305 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 09:15:17,309 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,345 INFO L137 Inliner]: procedures = 12, calls = 7, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 169 [2021-12-28 09:15:17,345 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 09:15:17,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 09:15:17,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 09:15:17,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 09:15:17,352 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,352 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,359 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,369 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,374 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,378 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,379 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 09:15:17,382 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 09:15:17,382 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 09:15:17,382 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 09:15:17,383 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (1/1) ... [2021-12-28 09:15:17,388 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-12-28 09:15:17,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 09:15:17,407 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-12-28 09:15:17,469 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-12-28 09:15:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 09:15:17,489 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 09:15:17,489 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 09:15:17,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 09:15:17,564 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 09:15:17,565 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 09:15:17,753 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 09:15:17,758 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 09:15:17,759 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 09:15:17,760 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:17 BoogieIcfgContainer [2021-12-28 09:15:17,760 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 09:15:17,761 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-12-28 09:15:17,761 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-12-28 09:15:17,763 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-12-28 09:15:17,764 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:17,764 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.12 09:15:16" (1/3) ... [2021-12-28 09:15:17,764 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e0916bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:15:17, skipping insertion in model container [2021-12-28 09:15:17,765 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:17,765 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 09:15:17" (2/3) ... [2021-12-28 09:15:17,765 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e0916bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.12 09:15:17, skipping insertion in model container [2021-12-28 09:15:17,765 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-12-28 09:15:17,765 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:17" (3/3) ... [2021-12-28 09:15:17,776 INFO L388 chiAutomizerObserver]: Analyzing ICFG test_locks_14-2.c [2021-12-28 09:15:17,811 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-12-28 09:15:17,811 INFO L360 BuchiCegarLoop]: Hoare is false [2021-12-28 09:15:17,812 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-12-28 09:15:17,812 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-12-28 09:15:17,812 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-12-28 09:15:17,812 INFO L364 BuchiCegarLoop]: Difference is false [2021-12-28 09:15:17,813 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-12-28 09:15:17,813 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-12-28 09:15:17,828 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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) [2021-12-28 09:15:17,849 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-12-28 09:15:17,849 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:17,849 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:17,853 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:17,854 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:17,854 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-12-28 09:15:17,854 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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) [2021-12-28 09:15:17,857 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 44 [2021-12-28 09:15:17,857 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:17,857 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:17,858 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:17,858 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:17,863 INFO L791 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 35#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 32#L211true [2021-12-28 09:15:17,864 INFO L793 eck$LassoCheckResult]: Loop: 32#L211true assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 46#L55true assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 23#L88true assume 0 != main_~p1~0#1;main_~lk1~0#1 := 1; 12#L88-2true assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 33#L92-1true assume !(0 != main_~p3~0#1); 4#L96-1true assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 7#L100-1true assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 49#L104-1true assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 13#L108-1true assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 52#L112-1true assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 27#L116-1true assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 39#L120-1true assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 34#L124-1true assume !(0 != main_~p11~0#1); 17#L128-1true assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 47#L132-1true assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 42#L136-1true assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 38#L140-1true assume !(0 != main_~p1~0#1); 18#L146-1true assume 0 != main_~p2~0#1; 28#L152true assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 14#L151true assume !(0 != main_~p3~0#1); 29#L156-1true assume !(0 != main_~p4~0#1); 5#L161-1true assume !(0 != main_~p5~0#1); 11#L166-1true assume !(0 != main_~p6~0#1); 25#L171-1true assume !(0 != main_~p7~0#1); 21#L176-1true assume !(0 != main_~p8~0#1); 50#L181-1true assume !(0 != main_~p9~0#1); 22#L186-1true assume !(0 != main_~p10~0#1); 37#L191-1true assume !(0 != main_~p11~0#1); 51#L196-1true assume !(0 != main_~p12~0#1); 26#L201-1true assume !(0 != main_~p13~0#1); 15#L206-1true assume 0 != main_~p14~0#1; 9#L212true assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 32#L211true [2021-12-28 09:15:17,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:17,868 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-12-28 09:15:17,875 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:17,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6200499] [2021-12-28 09:15:17,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:17,876 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:17,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:17,930 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:17,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:17,948 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:17,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:17,950 INFO L85 PathProgramCache]: Analyzing trace with hash -1237702727, now seen corresponding path program 1 times [2021-12-28 09:15:17,950 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:17,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [797344063] [2021-12-28 09:15:17,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:17,951 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:17,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,008 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [797344063] [2021-12-28 09:15:18,009 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [797344063] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,009 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,009 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,009 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405916487] [2021-12-28 09:15:18,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,013 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,013 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,037 INFO L87 Difference]: Start difference. First operand has 51 states, 50 states have (on average 1.9) internal successors, (95), 50 states have internal predecessors, (95), 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 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,089 INFO L93 Difference]: Finished difference Result 99 states and 178 transitions. [2021-12-28 09:15:18,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,098 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 99 states and 178 transitions. [2021-12-28 09:15:18,104 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-12-28 09:15:18,110 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 99 states to 89 states and 139 transitions. [2021-12-28 09:15:18,111 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2021-12-28 09:15:18,113 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 89 [2021-12-28 09:15:18,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 89 states and 139 transitions. [2021-12-28 09:15:18,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,114 INFO L681 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2021-12-28 09:15:18,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states and 139 transitions. [2021-12-28 09:15:18,137 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-12-28 09:15:18,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 89 states have (on average 1.5617977528089888) internal successors, (139), 88 states have internal predecessors, (139), 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) [2021-12-28 09:15:18,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 139 transitions. [2021-12-28 09:15:18,161 INFO L704 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2021-12-28 09:15:18,162 INFO L587 BuchiCegarLoop]: Abstraction has 89 states and 139 transitions. [2021-12-28 09:15:18,162 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-12-28 09:15:18,162 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 89 states and 139 transitions. [2021-12-28 09:15:18,175 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 87 [2021-12-28 09:15:18,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,175 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,176 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,176 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,176 INFO L791 eck$LassoCheckResult]: Stem: 192#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 175#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 176#L211 [2021-12-28 09:15:18,176 INFO L793 eck$LassoCheckResult]: Loop: 176#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 222#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 221#L88 assume !(0 != main_~p1~0#1); 220#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 219#L92-1 assume !(0 != main_~p3~0#1); 218#L96-1 assume 0 != main_~p4~0#1;main_~lk4~0#1 := 1; 217#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 207#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 186#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 187#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 205#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 184#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 173#L124-1 assume !(0 != main_~p11~0#1); 174#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 194#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 212#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 210#L140-1 assume !(0 != main_~p1~0#1); 211#L146-1 assume 0 != main_~p2~0#1; 247#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 246#L151 assume !(0 != main_~p3~0#1); 244#L156-1 assume !(0 != main_~p4~0#1); 242#L161-1 assume !(0 != main_~p5~0#1); 240#L166-1 assume !(0 != main_~p6~0#1); 237#L171-1 assume !(0 != main_~p7~0#1); 236#L176-1 assume !(0 != main_~p8~0#1); 234#L181-1 assume !(0 != main_~p9~0#1); 231#L186-1 assume !(0 != main_~p10~0#1); 230#L191-1 assume !(0 != main_~p11~0#1); 228#L196-1 assume !(0 != main_~p12~0#1); 226#L201-1 assume !(0 != main_~p13~0#1); 224#L206-1 assume 0 != main_~p14~0#1; 223#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 176#L211 [2021-12-28 09:15:18,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,177 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 2 times [2021-12-28 09:15:18,177 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1004280348] [2021-12-28 09:15:18,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,177 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,182 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,187 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,188 INFO L85 PathProgramCache]: Analyzing trace with hash -1215070473, now seen corresponding path program 1 times [2021-12-28 09:15:18,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [193998323] [2021-12-28 09:15:18,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,190 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,233 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [193998323] [2021-12-28 09:15:18,233 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [193998323] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,233 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,233 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51484454] [2021-12-28 09:15:18,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,234 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,235 INFO L87 Difference]: Start difference. First operand 89 states and 139 transitions. cyclomatic complexity: 52 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,247 INFO L93 Difference]: Finished difference Result 174 states and 270 transitions. [2021-12-28 09:15:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,249 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 174 states and 270 transitions. [2021-12-28 09:15:18,252 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2021-12-28 09:15:18,255 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 174 states to 174 states and 270 transitions. [2021-12-28 09:15:18,255 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 174 [2021-12-28 09:15:18,257 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 174 [2021-12-28 09:15:18,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 174 states and 270 transitions. [2021-12-28 09:15:18,260 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,260 INFO L681 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2021-12-28 09:15:18,260 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states and 270 transitions. [2021-12-28 09:15:18,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2021-12-28 09:15:18,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 174 states have (on average 1.5517241379310345) internal successors, (270), 173 states have internal predecessors, (270), 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) [2021-12-28 09:15:18,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 270 transitions. [2021-12-28 09:15:18,270 INFO L704 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2021-12-28 09:15:18,271 INFO L587 BuchiCegarLoop]: Abstraction has 174 states and 270 transitions. [2021-12-28 09:15:18,271 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-12-28 09:15:18,271 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 174 states and 270 transitions. [2021-12-28 09:15:18,272 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 172 [2021-12-28 09:15:18,272 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,272 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,274 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,274 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,274 INFO L791 eck$LassoCheckResult]: Stem: 462#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 444#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 445#L211 [2021-12-28 09:15:18,275 INFO L793 eck$LassoCheckResult]: Loop: 445#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 504#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 502#L88 assume !(0 != main_~p1~0#1); 499#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 496#L92-1 assume !(0 != main_~p3~0#1); 492#L96-1 assume !(0 != main_~p4~0#1); 489#L100-1 assume 0 != main_~p5~0#1;main_~lk5~0#1 := 1; 488#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 487#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 486#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 475#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 453#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 442#L124-1 assume !(0 != main_~p11~0#1); 443#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 463#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 482#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 479#L140-1 assume !(0 != main_~p1~0#1); 481#L146-1 assume 0 != main_~p2~0#1; 574#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 571#L151 assume !(0 != main_~p3~0#1); 568#L156-1 assume !(0 != main_~p4~0#1); 566#L161-1 assume !(0 != main_~p5~0#1); 562#L166-1 assume !(0 != main_~p6~0#1); 555#L171-1 assume !(0 != main_~p7~0#1); 552#L176-1 assume !(0 != main_~p8~0#1); 535#L181-1 assume !(0 != main_~p9~0#1); 532#L186-1 assume !(0 != main_~p10~0#1); 531#L191-1 assume !(0 != main_~p11~0#1); 529#L196-1 assume !(0 != main_~p12~0#1); 527#L201-1 assume !(0 != main_~p13~0#1); 519#L206-1 assume 0 != main_~p14~0#1; 518#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 445#L211 [2021-12-28 09:15:18,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,275 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 3 times [2021-12-28 09:15:18,276 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,276 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [745414009] [2021-12-28 09:15:18,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,277 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,286 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,299 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,301 INFO L85 PathProgramCache]: Analyzing trace with hash 708157561, now seen corresponding path program 1 times [2021-12-28 09:15:18,301 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754040341] [2021-12-28 09:15:18,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,302 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,341 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,341 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754040341] [2021-12-28 09:15:18,341 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754040341] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,341 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,341 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,341 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487317778] [2021-12-28 09:15:18,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,342 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,343 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,343 INFO L87 Difference]: Start difference. First operand 174 states and 270 transitions. cyclomatic complexity: 100 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,360 INFO L93 Difference]: Finished difference Result 342 states and 526 transitions. [2021-12-28 09:15:18,360 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,361 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 342 states and 526 transitions. [2021-12-28 09:15:18,363 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2021-12-28 09:15:18,364 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 342 states to 342 states and 526 transitions. [2021-12-28 09:15:18,364 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 342 [2021-12-28 09:15:18,364 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 342 [2021-12-28 09:15:18,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 342 states and 526 transitions. [2021-12-28 09:15:18,366 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,366 INFO L681 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2021-12-28 09:15:18,366 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states and 526 transitions. [2021-12-28 09:15:18,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 342. [2021-12-28 09:15:18,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 342 states, 342 states have (on average 1.5380116959064327) internal successors, (526), 341 states have internal predecessors, (526), 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) [2021-12-28 09:15:18,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 342 states to 342 states and 526 transitions. [2021-12-28 09:15:18,375 INFO L704 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2021-12-28 09:15:18,375 INFO L587 BuchiCegarLoop]: Abstraction has 342 states and 526 transitions. [2021-12-28 09:15:18,375 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-12-28 09:15:18,375 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 342 states and 526 transitions. [2021-12-28 09:15:18,376 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 340 [2021-12-28 09:15:18,376 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,376 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,377 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,377 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,377 INFO L791 eck$LassoCheckResult]: Stem: 984#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 966#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 967#L211 [2021-12-28 09:15:18,377 INFO L793 eck$LassoCheckResult]: Loop: 967#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 1039#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 1035#L88 assume !(0 != main_~p1~0#1); 1029#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 1025#L92-1 assume !(0 != main_~p3~0#1); 1026#L96-1 assume !(0 != main_~p4~0#1); 1164#L100-1 assume !(0 != main_~p5~0#1); 1162#L104-1 assume 0 != main_~p6~0#1;main_~lk6~0#1 := 1; 1160#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 1158#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 1156#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 1154#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 1152#L124-1 assume !(0 != main_~p11~0#1); 1150#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 1148#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 1146#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 1143#L140-1 assume !(0 != main_~p1~0#1); 1140#L146-1 assume 0 != main_~p2~0#1; 1138#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 1131#L151 assume !(0 != main_~p3~0#1); 1126#L156-1 assume !(0 != main_~p4~0#1); 1123#L161-1 assume !(0 != main_~p5~0#1); 1120#L166-1 assume !(0 != main_~p6~0#1); 1115#L171-1 assume !(0 != main_~p7~0#1); 1112#L176-1 assume !(0 != main_~p8~0#1); 1109#L181-1 assume !(0 != main_~p9~0#1); 1105#L186-1 assume !(0 != main_~p10~0#1); 1102#L191-1 assume !(0 != main_~p11~0#1); 1084#L196-1 assume !(0 != main_~p12~0#1); 1060#L201-1 assume !(0 != main_~p13~0#1); 1050#L206-1 assume 0 != main_~p14~0#1; 1046#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 967#L211 [2021-12-28 09:15:18,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,378 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 4 times [2021-12-28 09:15:18,378 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [774529316] [2021-12-28 09:15:18,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,378 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,382 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,386 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,386 INFO L85 PathProgramCache]: Analyzing trace with hash 770197175, now seen corresponding path program 1 times [2021-12-28 09:15:18,386 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,386 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491918956] [2021-12-28 09:15:18,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,387 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491918956] [2021-12-28 09:15:18,406 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491918956] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,406 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,406 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,406 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107983455] [2021-12-28 09:15:18,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,407 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,408 INFO L87 Difference]: Start difference. First operand 342 states and 526 transitions. cyclomatic complexity: 192 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,422 INFO L93 Difference]: Finished difference Result 674 states and 1026 transitions. [2021-12-28 09:15:18,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,423 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 674 states and 1026 transitions. [2021-12-28 09:15:18,427 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2021-12-28 09:15:18,429 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 674 states to 674 states and 1026 transitions. [2021-12-28 09:15:18,429 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 674 [2021-12-28 09:15:18,430 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 674 [2021-12-28 09:15:18,430 INFO L73 IsDeterministic]: Start isDeterministic. Operand 674 states and 1026 transitions. [2021-12-28 09:15:18,430 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,431 INFO L681 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2021-12-28 09:15:18,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 674 states and 1026 transitions. [2021-12-28 09:15:18,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 674 to 674. [2021-12-28 09:15:18,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 674 states, 674 states have (on average 1.5222551928783383) internal successors, (1026), 673 states have internal predecessors, (1026), 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) [2021-12-28 09:15:18,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 674 states to 674 states and 1026 transitions. [2021-12-28 09:15:18,443 INFO L704 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2021-12-28 09:15:18,443 INFO L587 BuchiCegarLoop]: Abstraction has 674 states and 1026 transitions. [2021-12-28 09:15:18,443 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-12-28 09:15:18,443 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 674 states and 1026 transitions. [2021-12-28 09:15:18,445 INFO L131 ngComponentsAnalysis]: Automaton has 16 accepting balls. 672 [2021-12-28 09:15:18,446 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,446 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,446 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,446 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,446 INFO L791 eck$LassoCheckResult]: Stem: 2007#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 1989#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 1990#L211 [2021-12-28 09:15:18,447 INFO L793 eck$LassoCheckResult]: Loop: 1990#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 2054#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 2055#L88 assume !(0 != main_~p1~0#1); 2248#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 2255#L92-1 assume !(0 != main_~p3~0#1); 2254#L96-1 assume !(0 != main_~p4~0#1); 2251#L100-1 assume !(0 != main_~p5~0#1); 2177#L104-1 assume !(0 != main_~p6~0#1); 2179#L108-1 assume 0 != main_~p7~0#1;main_~lk7~0#1 := 1; 2169#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 2170#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 2161#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 2162#L124-1 assume !(0 != main_~p11~0#1); 2153#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 2154#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 2145#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 2146#L140-1 assume !(0 != main_~p1~0#1); 2221#L146-1 assume 0 != main_~p2~0#1; 2218#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 2215#L151 assume !(0 != main_~p3~0#1); 2214#L156-1 assume !(0 != main_~p4~0#1); 2295#L161-1 assume !(0 != main_~p5~0#1); 2294#L166-1 assume !(0 != main_~p6~0#1); 2292#L171-1 assume !(0 != main_~p7~0#1); 2291#L176-1 assume !(0 != main_~p8~0#1); 2281#L181-1 assume !(0 != main_~p9~0#1); 2241#L186-1 assume !(0 != main_~p10~0#1); 2242#L191-1 assume !(0 != main_~p11~0#1); 2183#L196-1 assume !(0 != main_~p12~0#1); 2182#L201-1 assume !(0 != main_~p13~0#1); 2072#L206-1 assume 0 != main_~p14~0#1; 2066#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 1990#L211 [2021-12-28 09:15:18,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,447 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 5 times [2021-12-28 09:15:18,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032184027] [2021-12-28 09:15:18,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,448 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,452 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,455 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,456 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,456 INFO L85 PathProgramCache]: Analyzing trace with hash 910745785, now seen corresponding path program 1 times [2021-12-28 09:15:18,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,456 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2099528288] [2021-12-28 09:15:18,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,456 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,474 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,475 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,475 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2099528288] [2021-12-28 09:15:18,475 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2099528288] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,475 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,475 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,475 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594394225] [2021-12-28 09:15:18,476 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,476 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,476 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,476 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,476 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,477 INFO L87 Difference]: Start difference. First operand 674 states and 1026 transitions. cyclomatic complexity: 368 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,487 INFO L93 Difference]: Finished difference Result 1330 states and 2002 transitions. [2021-12-28 09:15:18,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,488 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 1330 states and 2002 transitions. [2021-12-28 09:15:18,494 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2021-12-28 09:15:18,498 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 1330 states to 1330 states and 2002 transitions. [2021-12-28 09:15:18,499 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 1330 [2021-12-28 09:15:18,499 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 1330 [2021-12-28 09:15:18,499 INFO L73 IsDeterministic]: Start isDeterministic. Operand 1330 states and 2002 transitions. [2021-12-28 09:15:18,501 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,501 INFO L681 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2021-12-28 09:15:18,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1330 states and 2002 transitions. [2021-12-28 09:15:18,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1330 to 1330. [2021-12-28 09:15:18,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1330 states, 1330 states have (on average 1.5052631578947369) internal successors, (2002), 1329 states have internal predecessors, (2002), 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) [2021-12-28 09:15:18,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1330 states to 1330 states and 2002 transitions. [2021-12-28 09:15:18,526 INFO L704 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2021-12-28 09:15:18,527 INFO L587 BuchiCegarLoop]: Abstraction has 1330 states and 2002 transitions. [2021-12-28 09:15:18,527 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-12-28 09:15:18,527 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 1330 states and 2002 transitions. [2021-12-28 09:15:18,532 INFO L131 ngComponentsAnalysis]: Automaton has 32 accepting balls. 1328 [2021-12-28 09:15:18,532 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,532 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,533 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,533 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,533 INFO L791 eck$LassoCheckResult]: Stem: 4016#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 3998#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 3999#L211 [2021-12-28 09:15:18,533 INFO L793 eck$LassoCheckResult]: Loop: 3999#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 4129#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 4125#L88 assume !(0 != main_~p1~0#1); 4121#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 4117#L92-1 assume !(0 != main_~p3~0#1); 4110#L96-1 assume !(0 != main_~p4~0#1); 4102#L100-1 assume !(0 != main_~p5~0#1); 4094#L104-1 assume !(0 != main_~p6~0#1); 4088#L108-1 assume !(0 != main_~p7~0#1); 4084#L112-1 assume 0 != main_~p8~0#1;main_~lk8~0#1 := 1; 4082#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 4080#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 4078#L124-1 assume !(0 != main_~p11~0#1); 4075#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 4076#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 4229#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 4068#L140-1 assume !(0 != main_~p1~0#1); 4062#L146-1 assume 0 != main_~p2~0#1; 4063#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 4219#L151 assume !(0 != main_~p3~0#1); 4211#L156-1 assume !(0 != main_~p4~0#1); 4203#L161-1 assume !(0 != main_~p5~0#1); 4198#L166-1 assume !(0 != main_~p6~0#1); 4193#L171-1 assume !(0 != main_~p7~0#1); 4190#L176-1 assume !(0 != main_~p8~0#1); 4186#L181-1 assume !(0 != main_~p9~0#1); 4180#L186-1 assume !(0 != main_~p10~0#1); 4164#L191-1 assume !(0 != main_~p11~0#1); 4160#L196-1 assume !(0 != main_~p12~0#1); 4146#L201-1 assume !(0 != main_~p13~0#1); 4140#L206-1 assume 0 != main_~p14~0#1; 4136#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 3999#L211 [2021-12-28 09:15:18,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,534 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 6 times [2021-12-28 09:15:18,534 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130125229] [2021-12-28 09:15:18,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,535 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,543 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,552 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,553 INFO L85 PathProgramCache]: Analyzing trace with hash 776732279, now seen corresponding path program 1 times [2021-12-28 09:15:18,553 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19702139] [2021-12-28 09:15:18,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,554 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,579 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,579 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,580 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19702139] [2021-12-28 09:15:18,580 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19702139] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,580 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,580 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,580 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [107816722] [2021-12-28 09:15:18,580 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,581 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,581 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,581 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,581 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,581 INFO L87 Difference]: Start difference. First operand 1330 states and 2002 transitions. cyclomatic complexity: 704 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,595 INFO L93 Difference]: Finished difference Result 2626 states and 3906 transitions. [2021-12-28 09:15:18,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,595 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 2626 states and 3906 transitions. [2021-12-28 09:15:18,610 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2021-12-28 09:15:18,619 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 2626 states to 2626 states and 3906 transitions. [2021-12-28 09:15:18,619 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 2626 [2021-12-28 09:15:18,621 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 2626 [2021-12-28 09:15:18,621 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2626 states and 3906 transitions. [2021-12-28 09:15:18,623 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,623 INFO L681 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2021-12-28 09:15:18,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2626 states and 3906 transitions. [2021-12-28 09:15:18,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2626 to 2626. [2021-12-28 09:15:18,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2626 states, 2626 states have (on average 1.4874333587204875) internal successors, (3906), 2625 states have internal predecessors, (3906), 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) [2021-12-28 09:15:18,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2626 states to 2626 states and 3906 transitions. [2021-12-28 09:15:18,676 INFO L704 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2021-12-28 09:15:18,677 INFO L587 BuchiCegarLoop]: Abstraction has 2626 states and 3906 transitions. [2021-12-28 09:15:18,679 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-12-28 09:15:18,679 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 2626 states and 3906 transitions. [2021-12-28 09:15:18,689 INFO L131 ngComponentsAnalysis]: Automaton has 64 accepting balls. 2624 [2021-12-28 09:15:18,690 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,690 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,692 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,693 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,693 INFO L791 eck$LassoCheckResult]: Stem: 7981#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 7962#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 7963#L211 [2021-12-28 09:15:18,693 INFO L793 eck$LassoCheckResult]: Loop: 7963#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 8562#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 8560#L88 assume !(0 != main_~p1~0#1); 8559#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 8368#L92-1 assume !(0 != main_~p3~0#1); 8369#L96-1 assume !(0 != main_~p4~0#1); 8542#L100-1 assume !(0 != main_~p5~0#1); 8538#L104-1 assume !(0 != main_~p6~0#1); 8534#L108-1 assume !(0 != main_~p7~0#1); 8530#L112-1 assume !(0 != main_~p8~0#1); 8528#L116-1 assume 0 != main_~p9~0#1;main_~lk9~0#1 := 1; 8480#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 8481#L124-1 assume !(0 != main_~p11~0#1); 8472#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 8473#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 8463#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 8464#L140-1 assume !(0 != main_~p1~0#1); 8526#L146-1 assume 0 != main_~p2~0#1; 8525#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 8491#L151 assume !(0 != main_~p3~0#1); 8489#L156-1 assume !(0 != main_~p4~0#1); 8245#L161-1 assume !(0 != main_~p5~0#1); 8240#L166-1 assume !(0 != main_~p6~0#1); 8241#L171-1 assume !(0 != main_~p7~0#1); 8587#L176-1 assume !(0 != main_~p8~0#1); 8585#L181-1 assume !(0 != main_~p9~0#1); 8582#L186-1 assume !(0 != main_~p10~0#1); 8581#L191-1 assume !(0 != main_~p11~0#1); 8570#L196-1 assume !(0 != main_~p12~0#1); 8566#L201-1 assume !(0 != main_~p13~0#1); 8564#L206-1 assume 0 != main_~p14~0#1; 8563#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 7963#L211 [2021-12-28 09:15:18,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,697 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 7 times [2021-12-28 09:15:18,697 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,698 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749508346] [2021-12-28 09:15:18,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,698 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,707 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,714 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,715 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,715 INFO L85 PathProgramCache]: Analyzing trace with hash -1028706055, now seen corresponding path program 1 times [2021-12-28 09:15:18,715 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,715 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [259112616] [2021-12-28 09:15:18,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,716 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:18,748 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:18,749 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:18,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [259112616] [2021-12-28 09:15:18,750 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [259112616] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:18,750 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:18,750 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:18,750 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [387530334] [2021-12-28 09:15:18,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:18,751 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:18,751 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:18,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:18,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:18,751 INFO L87 Difference]: Start difference. First operand 2626 states and 3906 transitions. cyclomatic complexity: 1344 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:18,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:18,777 INFO L93 Difference]: Finished difference Result 5186 states and 7618 transitions. [2021-12-28 09:15:18,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:18,777 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 5186 states and 7618 transitions. [2021-12-28 09:15:18,824 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2021-12-28 09:15:18,843 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 5186 states to 5186 states and 7618 transitions. [2021-12-28 09:15:18,844 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5186 [2021-12-28 09:15:18,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5186 [2021-12-28 09:15:18,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5186 states and 7618 transitions. [2021-12-28 09:15:18,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:18,850 INFO L681 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2021-12-28 09:15:18,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5186 states and 7618 transitions. [2021-12-28 09:15:18,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5186 to 5186. [2021-12-28 09:15:18,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5186 states, 5186 states have (on average 1.4689548785190898) internal successors, (7618), 5185 states have internal predecessors, (7618), 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) [2021-12-28 09:15:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5186 states to 5186 states and 7618 transitions. [2021-12-28 09:15:18,943 INFO L704 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2021-12-28 09:15:18,943 INFO L587 BuchiCegarLoop]: Abstraction has 5186 states and 7618 transitions. [2021-12-28 09:15:18,943 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-12-28 09:15:18,943 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5186 states and 7618 transitions. [2021-12-28 09:15:18,957 INFO L131 ngComponentsAnalysis]: Automaton has 128 accepting balls. 5184 [2021-12-28 09:15:18,957 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:18,957 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:18,958 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:18,958 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:18,958 INFO L791 eck$LassoCheckResult]: Stem: 15797#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 15778#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 15779#L211 [2021-12-28 09:15:18,958 INFO L793 eck$LassoCheckResult]: Loop: 15779#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 16492#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 16493#L88 assume !(0 != main_~p1~0#1); 16478#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 16479#L92-1 assume !(0 != main_~p3~0#1); 16474#L96-1 assume !(0 != main_~p4~0#1); 16475#L100-1 assume !(0 != main_~p5~0#1); 16603#L104-1 assume !(0 != main_~p6~0#1); 16600#L108-1 assume !(0 != main_~p7~0#1); 16595#L112-1 assume !(0 != main_~p8~0#1); 16585#L116-1 assume !(0 != main_~p9~0#1); 16584#L120-1 assume 0 != main_~p10~0#1;main_~lk10~0#1 := 1; 16583#L124-1 assume !(0 != main_~p11~0#1); 16582#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 16316#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 16317#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 16297#L140-1 assume !(0 != main_~p1~0#1); 16299#L146-1 assume 0 != main_~p2~0#1; 16208#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 16209#L151 assume !(0 != main_~p3~0#1); 16198#L156-1 assume !(0 != main_~p4~0#1); 16199#L161-1 assume !(0 != main_~p5~0#1); 16188#L166-1 assume !(0 != main_~p6~0#1); 16189#L171-1 assume !(0 != main_~p7~0#1); 16575#L176-1 assume !(0 != main_~p8~0#1); 16627#L181-1 assume !(0 != main_~p9~0#1); 16625#L186-1 assume !(0 != main_~p10~0#1); 16624#L191-1 assume !(0 != main_~p11~0#1); 16622#L196-1 assume !(0 != main_~p12~0#1); 16521#L201-1 assume !(0 != main_~p13~0#1); 16520#L206-1 assume 0 != main_~p14~0#1; 16508#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 15779#L211 [2021-12-28 09:15:18,959 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,959 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 8 times [2021-12-28 09:15:18,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [859106558] [2021-12-28 09:15:18,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,966 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:18,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:18,978 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:18,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:18,980 INFO L85 PathProgramCache]: Analyzing trace with hash -809851337, now seen corresponding path program 1 times [2021-12-28 09:15:18,981 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:18,981 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390533441] [2021-12-28 09:15:18,981 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:18,981 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:18,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:19,000 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:19,001 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:19,004 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1390533441] [2021-12-28 09:15:19,004 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1390533441] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:19,004 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:19,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:19,005 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995975970] [2021-12-28 09:15:19,029 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:19,030 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:19,031 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:19,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:19,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:19,031 INFO L87 Difference]: Start difference. First operand 5186 states and 7618 transitions. cyclomatic complexity: 2560 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:19,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:19,070 INFO L93 Difference]: Finished difference Result 10242 states and 14850 transitions. [2021-12-28 09:15:19,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:19,072 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 10242 states and 14850 transitions. [2021-12-28 09:15:19,208 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2021-12-28 09:15:19,252 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 10242 states to 10242 states and 14850 transitions. [2021-12-28 09:15:19,253 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10242 [2021-12-28 09:15:19,260 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10242 [2021-12-28 09:15:19,261 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10242 states and 14850 transitions. [2021-12-28 09:15:19,271 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:19,271 INFO L681 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2021-12-28 09:15:19,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10242 states and 14850 transitions. [2021-12-28 09:15:19,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10242 to 10242. [2021-12-28 09:15:19,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10242 states, 10242 states have (on average 1.4499121265377857) internal successors, (14850), 10241 states have internal predecessors, (14850), 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) [2021-12-28 09:15:19,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10242 states to 10242 states and 14850 transitions. [2021-12-28 09:15:19,449 INFO L704 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2021-12-28 09:15:19,449 INFO L587 BuchiCegarLoop]: Abstraction has 10242 states and 14850 transitions. [2021-12-28 09:15:19,449 INFO L425 BuchiCegarLoop]: ======== Iteration 9============ [2021-12-28 09:15:19,449 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10242 states and 14850 transitions. [2021-12-28 09:15:19,523 INFO L131 ngComponentsAnalysis]: Automaton has 256 accepting balls. 10240 [2021-12-28 09:15:19,523 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:19,523 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:19,523 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:19,523 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:19,524 INFO L791 eck$LassoCheckResult]: Stem: 31232#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 31212#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 31213#L211 [2021-12-28 09:15:19,524 INFO L793 eck$LassoCheckResult]: Loop: 31213#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 31584#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 31585#L88 assume !(0 != main_~p1~0#1); 31684#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 31683#L92-1 assume !(0 != main_~p3~0#1); 31681#L96-1 assume !(0 != main_~p4~0#1); 31679#L100-1 assume !(0 != main_~p5~0#1); 31677#L104-1 assume !(0 != main_~p6~0#1); 31675#L108-1 assume !(0 != main_~p7~0#1); 31671#L112-1 assume !(0 != main_~p8~0#1); 31667#L116-1 assume !(0 != main_~p9~0#1); 31664#L120-1 assume !(0 != main_~p10~0#1); 31662#L124-1 assume !(0 != main_~p11~0#1); 31660#L128-1 assume 0 != main_~p12~0#1;main_~lk12~0#1 := 1; 31658#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 31656#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 31654#L140-1 assume !(0 != main_~p1~0#1); 31652#L146-1 assume 0 != main_~p2~0#1; 31650#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 31647#L151 assume !(0 != main_~p3~0#1); 31642#L156-1 assume !(0 != main_~p4~0#1); 31638#L161-1 assume !(0 != main_~p5~0#1); 31634#L166-1 assume !(0 != main_~p6~0#1); 31630#L171-1 assume !(0 != main_~p7~0#1); 31626#L176-1 assume !(0 != main_~p8~0#1); 31622#L181-1 assume !(0 != main_~p9~0#1); 31623#L186-1 assume !(0 != main_~p10~0#1); 31614#L191-1 assume !(0 != main_~p11~0#1); 31613#L196-1 assume !(0 != main_~p12~0#1); 31602#L201-1 assume !(0 != main_~p13~0#1); 31601#L206-1 assume 0 != main_~p14~0#1; 31592#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 31213#L211 [2021-12-28 09:15:19,524 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:19,524 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 9 times [2021-12-28 09:15:19,525 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:19,525 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260023374] [2021-12-28 09:15:19,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:19,525 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:19,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:19,527 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:19,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:19,530 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:19,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:19,530 INFO L85 PathProgramCache]: Analyzing trace with hash -387149511, now seen corresponding path program 1 times [2021-12-28 09:15:19,530 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:19,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [493759559] [2021-12-28 09:15:19,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:19,531 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:19,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:19,542 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:19,542 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:19,542 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [493759559] [2021-12-28 09:15:19,542 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [493759559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:19,542 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:19,543 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:19,543 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758785874] [2021-12-28 09:15:19,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:19,543 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:19,543 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:19,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:19,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:19,544 INFO L87 Difference]: Start difference. First operand 10242 states and 14850 transitions. cyclomatic complexity: 4864 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:19,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:19,591 INFO L93 Difference]: Finished difference Result 20226 states and 28930 transitions. [2021-12-28 09:15:19,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:19,592 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 20226 states and 28930 transitions. [2021-12-28 09:15:19,733 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2021-12-28 09:15:19,779 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 20226 states to 20226 states and 28930 transitions. [2021-12-28 09:15:19,779 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20226 [2021-12-28 09:15:19,790 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20226 [2021-12-28 09:15:19,790 INFO L73 IsDeterministic]: Start isDeterministic. Operand 20226 states and 28930 transitions. [2021-12-28 09:15:19,807 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:19,807 INFO L681 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2021-12-28 09:15:19,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20226 states and 28930 transitions. [2021-12-28 09:15:20,111 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20226 to 20226. [2021-12-28 09:15:20,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20226 states, 20226 states have (on average 1.43033718975576) internal successors, (28930), 20225 states have internal predecessors, (28930), 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) [2021-12-28 09:15:20,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20226 states to 20226 states and 28930 transitions. [2021-12-28 09:15:20,182 INFO L704 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2021-12-28 09:15:20,182 INFO L587 BuchiCegarLoop]: Abstraction has 20226 states and 28930 transitions. [2021-12-28 09:15:20,182 INFO L425 BuchiCegarLoop]: ======== Iteration 10============ [2021-12-28 09:15:20,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 20226 states and 28930 transitions. [2021-12-28 09:15:20,225 INFO L131 ngComponentsAnalysis]: Automaton has 512 accepting balls. 20224 [2021-12-28 09:15:20,226 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:20,226 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:20,226 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:20,226 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:20,226 INFO L791 eck$LassoCheckResult]: Stem: 61707#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 61687#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 61688#L211 [2021-12-28 09:15:20,227 INFO L793 eck$LassoCheckResult]: Loop: 61688#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 61838#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 61836#L88 assume !(0 != main_~p1~0#1); 61834#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 61832#L92-1 assume !(0 != main_~p3~0#1); 61828#L96-1 assume !(0 != main_~p4~0#1); 61824#L100-1 assume !(0 != main_~p5~0#1); 61820#L104-1 assume !(0 != main_~p6~0#1); 61816#L108-1 assume !(0 != main_~p7~0#1); 61812#L112-1 assume !(0 != main_~p8~0#1); 61808#L116-1 assume !(0 != main_~p9~0#1); 61804#L120-1 assume !(0 != main_~p10~0#1); 61802#L124-1 assume !(0 != main_~p11~0#1); 61798#L128-1 assume !(0 != main_~p12~0#1); 61796#L132-1 assume 0 != main_~p13~0#1;main_~lk13~0#1 := 1; 61794#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 61792#L140-1 assume !(0 != main_~p1~0#1); 61787#L146-1 assume 0 != main_~p2~0#1; 61784#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 61780#L151 assume !(0 != main_~p3~0#1); 61779#L156-1 assume !(0 != main_~p4~0#1); 61877#L161-1 assume !(0 != main_~p5~0#1); 61873#L166-1 assume !(0 != main_~p6~0#1); 61869#L171-1 assume !(0 != main_~p7~0#1); 61865#L176-1 assume !(0 != main_~p8~0#1); 61861#L181-1 assume !(0 != main_~p9~0#1); 61857#L186-1 assume !(0 != main_~p10~0#1); 61854#L191-1 assume !(0 != main_~p11~0#1); 61849#L196-1 assume !(0 != main_~p12~0#1); 61846#L201-1 assume !(0 != main_~p13~0#1); 61843#L206-1 assume 0 != main_~p14~0#1; 61841#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 61688#L211 [2021-12-28 09:15:20,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:20,227 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 10 times [2021-12-28 09:15:20,227 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:20,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746189138] [2021-12-28 09:15:20,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:20,228 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:20,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:20,231 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:20,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:20,239 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:20,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:20,240 INFO L85 PathProgramCache]: Analyzing trace with hash -2076093253, now seen corresponding path program 1 times [2021-12-28 09:15:20,240 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:20,240 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174044199] [2021-12-28 09:15:20,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:20,241 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:20,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 09:15:20,256 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 09:15:20,257 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 09:15:20,257 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174044199] [2021-12-28 09:15:20,257 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174044199] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 09:15:20,257 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 09:15:20,257 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 09:15:20,257 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1734330875] [2021-12-28 09:15:20,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 09:15:20,257 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-12-28 09:15:20,258 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 09:15:20,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 09:15:20,259 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 09:15:20,259 INFO L87 Difference]: Start difference. First operand 20226 states and 28930 transitions. cyclomatic complexity: 9216 Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 3 states have internal predecessors, (32), 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) [2021-12-28 09:15:20,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 09:15:20,362 INFO L93 Difference]: Finished difference Result 39938 states and 56322 transitions. [2021-12-28 09:15:20,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 09:15:20,363 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39938 states and 56322 transitions. [2021-12-28 09:15:20,685 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2021-12-28 09:15:20,768 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39938 states to 39938 states and 56322 transitions. [2021-12-28 09:15:20,768 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39938 [2021-12-28 09:15:20,798 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39938 [2021-12-28 09:15:20,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39938 states and 56322 transitions. [2021-12-28 09:15:20,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-12-28 09:15:20,920 INFO L681 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2021-12-28 09:15:20,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39938 states and 56322 transitions. [2021-12-28 09:15:21,289 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39938 to 39938. [2021-12-28 09:15:21,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39938 states, 39938 states have (on average 1.4102358655916671) internal successors, (56322), 39937 states have internal predecessors, (56322), 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) [2021-12-28 09:15:21,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39938 states to 39938 states and 56322 transitions. [2021-12-28 09:15:21,499 INFO L704 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2021-12-28 09:15:21,499 INFO L587 BuchiCegarLoop]: Abstraction has 39938 states and 56322 transitions. [2021-12-28 09:15:21,500 INFO L425 BuchiCegarLoop]: ======== Iteration 11============ [2021-12-28 09:15:21,500 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39938 states and 56322 transitions. [2021-12-28 09:15:21,750 INFO L131 ngComponentsAnalysis]: Automaton has 1024 accepting balls. 39936 [2021-12-28 09:15:21,750 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-12-28 09:15:21,750 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-12-28 09:15:21,751 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-12-28 09:15:21,751 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 09:15:21,751 INFO L791 eck$LassoCheckResult]: Stem: 121873#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;assume 0 == #valid[0];assume 0 < #StackHeapBarrier;call #Ultimate.allocInit(2, 1);call write~init~int(48, 1, 0, 1);call write~init~int(0, 1, 1, 1);call #Ultimate.allocInit(18, 2);call #Ultimate.allocInit(12, 3); 121856#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet4#1, main_#t~nondet5#1, main_#t~nondet6#1, main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~nondet11#1, main_#t~nondet12#1, main_#t~nondet13#1, main_#t~nondet14#1, main_#t~nondet15#1, main_#t~nondet16#1, main_#t~nondet17#1, main_#t~nondet18#1, main_~p1~0#1, main_~lk1~0#1, main_~p2~0#1, main_~lk2~0#1, main_~p3~0#1, main_~lk3~0#1, main_~p4~0#1, main_~lk4~0#1, main_~p5~0#1, main_~lk5~0#1, main_~p6~0#1, main_~lk6~0#1, main_~p7~0#1, main_~lk7~0#1, main_~p8~0#1, main_~lk8~0#1, main_~p9~0#1, main_~lk9~0#1, main_~p10~0#1, main_~lk10~0#1, main_~p11~0#1, main_~lk11~0#1, main_~p12~0#1, main_~lk12~0#1, main_~p13~0#1, main_~lk13~0#1, main_~p14~0#1, main_~lk14~0#1, main_~cond~0#1;main_~p1~0#1 := main_#t~nondet4#1;havoc main_#t~nondet4#1;havoc main_~lk1~0#1;main_~p2~0#1 := main_#t~nondet5#1;havoc main_#t~nondet5#1;havoc main_~lk2~0#1;main_~p3~0#1 := main_#t~nondet6#1;havoc main_#t~nondet6#1;havoc main_~lk3~0#1;main_~p4~0#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;havoc main_~lk4~0#1;main_~p5~0#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~lk5~0#1;main_~p6~0#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;havoc main_~lk6~0#1;main_~p7~0#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~lk7~0#1;main_~p8~0#1 := main_#t~nondet11#1;havoc main_#t~nondet11#1;havoc main_~lk8~0#1;main_~p9~0#1 := main_#t~nondet12#1;havoc main_#t~nondet12#1;havoc main_~lk9~0#1;main_~p10~0#1 := main_#t~nondet13#1;havoc main_#t~nondet13#1;havoc main_~lk10~0#1;main_~p11~0#1 := main_#t~nondet14#1;havoc main_#t~nondet14#1;havoc main_~lk11~0#1;main_~p12~0#1 := main_#t~nondet15#1;havoc main_#t~nondet15#1;havoc main_~lk12~0#1;main_~p13~0#1 := main_#t~nondet16#1;havoc main_#t~nondet16#1;havoc main_~lk13~0#1;main_~p14~0#1 := main_#t~nondet17#1;havoc main_#t~nondet17#1;havoc main_~lk14~0#1;havoc main_~cond~0#1; 121857#L211 [2021-12-28 09:15:21,751 INFO L793 eck$LassoCheckResult]: Loop: 121857#L211 assume !false;main_~cond~0#1 := main_#t~nondet18#1;havoc main_#t~nondet18#1; 122287#L55 assume !(0 == main_~cond~0#1);main_~lk1~0#1 := 0;main_~lk2~0#1 := 0;main_~lk3~0#1 := 0;main_~lk4~0#1 := 0;main_~lk5~0#1 := 0;main_~lk6~0#1 := 0;main_~lk7~0#1 := 0;main_~lk8~0#1 := 0;main_~lk9~0#1 := 0;main_~lk10~0#1 := 0;main_~lk11~0#1 := 0;main_~lk12~0#1 := 0;main_~lk13~0#1 := 0;main_~lk14~0#1 := 0; 122283#L88 assume !(0 != main_~p1~0#1); 122281#L88-2 assume 0 != main_~p2~0#1;main_~lk2~0#1 := 1; 122279#L92-1 assume !(0 != main_~p3~0#1); 122275#L96-1 assume !(0 != main_~p4~0#1); 122271#L100-1 assume !(0 != main_~p5~0#1); 122267#L104-1 assume !(0 != main_~p6~0#1); 122263#L108-1 assume !(0 != main_~p7~0#1); 122259#L112-1 assume !(0 != main_~p8~0#1); 122255#L116-1 assume !(0 != main_~p9~0#1); 122251#L120-1 assume !(0 != main_~p10~0#1); 122249#L124-1 assume !(0 != main_~p11~0#1); 122246#L128-1 assume !(0 != main_~p12~0#1); 122247#L132-1 assume !(0 != main_~p13~0#1); 122340#L136-1 assume 0 != main_~p14~0#1;main_~lk14~0#1 := 1; 122337#L140-1 assume !(0 != main_~p1~0#1); 122335#L146-1 assume 0 != main_~p2~0#1; 122332#L152 assume !(1 != main_~lk2~0#1);main_~lk2~0#1 := 0; 122329#L151 assume !(0 != main_~p3~0#1); 122324#L156-1 assume !(0 != main_~p4~0#1); 122320#L161-1 assume !(0 != main_~p5~0#1); 122316#L166-1 assume !(0 != main_~p6~0#1); 122312#L171-1 assume !(0 != main_~p7~0#1); 122308#L176-1 assume !(0 != main_~p8~0#1); 122304#L181-1 assume !(0 != main_~p9~0#1); 122300#L186-1 assume !(0 != main_~p10~0#1); 122298#L191-1 assume !(0 != main_~p11~0#1); 122296#L196-1 assume !(0 != main_~p12~0#1); 122294#L201-1 assume !(0 != main_~p13~0#1); 122292#L206-1 assume 0 != main_~p14~0#1; 122290#L212 assume !(1 != main_~lk14~0#1);main_~lk14~0#1 := 0; 121857#L211 [2021-12-28 09:15:21,751 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:21,751 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 11 times [2021-12-28 09:15:21,752 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:21,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793024442] [2021-12-28 09:15:21,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:21,752 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:21,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,754 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,756 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:21,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:21,756 INFO L85 PathProgramCache]: Analyzing trace with hash 224729337, now seen corresponding path program 1 times [2021-12-28 09:15:21,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:21,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1672257037] [2021-12-28 09:15:21,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:21,756 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:21,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,758 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:21,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,787 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:21,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 09:15:21,787 INFO L85 PathProgramCache]: Analyzing trace with hash -233466693, now seen corresponding path program 1 times [2021-12-28 09:15:21,788 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 09:15:21,788 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [579033546] [2021-12-28 09:15:21,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 09:15:21,788 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 09:15:21,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,794 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 09:15:21,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 09:15:21,798 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 09:15:22,202 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.12 09:15:22 BoogieIcfgContainer [2021-12-28 09:15:22,203 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-12-28 09:15:22,203 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 09:15:22,203 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 09:15:22,203 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 09:15:22,203 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 09:15:17" (3/4) ... [2021-12-28 09:15:22,205 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-12-28 09:15:22,301 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 09:15:22,301 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 09:15:22,302 INFO L158 Benchmark]: Toolchain (without parser) took 5410.45ms. Allocated memory was 60.8MB in the beginning and 1.3GB in the end (delta: 1.3GB). Free memory was 39.7MB in the beginning and 1.1GB in the end (delta: -1.0GB). Peak memory consumption was 322.5MB. Max. memory is 16.1GB. [2021-12-28 09:15:22,302 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:15:22,302 INFO L158 Benchmark]: CACSL2BoogieTranslator took 392.13ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 44.0MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-12-28 09:15:22,303 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.59ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:15:22,303 INFO L158 Benchmark]: Boogie Preprocessor took 34.90ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 09:15:22,303 INFO L158 Benchmark]: RCFGBuilder took 378.61ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 28.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 09:15:22,303 INFO L158 Benchmark]: BuchiAutomizer took 4441.77ms. Allocated memory was 60.8MB in the beginning and 1.3GB in the end (delta: 1.3GB). Free memory was 28.2MB in the beginning and 994.3MB in the end (delta: -966.1MB). Peak memory consumption was 288.5MB. Max. memory is 16.1GB. [2021-12-28 09:15:22,303 INFO L158 Benchmark]: Witness Printer took 98.58ms. Allocated memory is still 1.3GB. Free memory was 994.3MB in the beginning and 1.1GB in the end (delta: -67.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. [2021-12-28 09:15:22,304 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 60.8MB. Free memory is still 41.5MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 392.13ms. Allocated memory is still 60.8MB. Free memory was 39.4MB in the beginning and 44.0MB in the end (delta: -4.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 40.59ms. Allocated memory is still 60.8MB. Free memory was 43.7MB in the beginning and 42.2MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 34.90ms. Allocated memory is still 60.8MB. Free memory was 42.2MB in the beginning and 40.6MB in the end (delta: 1.5MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 378.61ms. Allocated memory is still 60.8MB. Free memory was 40.6MB in the beginning and 28.2MB in the end (delta: 12.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * BuchiAutomizer took 4441.77ms. Allocated memory was 60.8MB in the beginning and 1.3GB in the end (delta: 1.3GB). Free memory was 28.2MB in the beginning and 994.3MB in the end (delta: -966.1MB). Peak memory consumption was 288.5MB. Max. memory is 16.1GB. * Witness Printer took 98.58ms. Allocated memory is still 1.3GB. Free memory was 994.3MB in the beginning and 1.1GB in the end (delta: -67.2MB). Peak memory consumption was 24.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 10 terminating modules (10 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.10 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 39938 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 4.3s and 11 iterations. TraceHistogramMax:1. Analysis of lassos took 1.0s. Construction of modules took 0.0s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 0. Minimization of det autom 10. Minimization of nondet autom 0. Automata minimization 1.4s AutomataMinimizationTime, 10 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.9s Buchi closure took 0.0s. Biggest automaton had 39938 states and ocurred in iteration 10. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 551 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 551 mSDsluCounter, 1762 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 679 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 1083 mSDtfsCounter, 50 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont1 unkn0 SFLI10 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 53]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {NULL=1} State at position 1 is {p11=0, p13=0, lk5=0, p1=0, NULL=0, lk13=0, p9=0, lk9=0, NULL=1, lk12=0, cond=5, p5=0, p12=0, p10=0, lk2=0, p4=0, p14=6, p8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@622ec604=0, lk6=0, lk11=0, lk1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@492254d5=0, p3=0, lk3=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@41d5262=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@cce0bbd=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@46685c1f=0, p7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7876434c=0, \result=0, lk10=0, lk7=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4112fe0c=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@55181ecc=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@39f1b268=0, p6=0, NULL=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3dfd99ed=0, lk14=0, p2=4, lk4=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@669ee693=5, lk8=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@66192157=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@73e2bd26=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61ce94f5=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@30ad5bd0=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 53]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L8] int p1 = __VERIFIER_nondet_int(); [L9] int lk1; [L11] int p2 = __VERIFIER_nondet_int(); [L12] int lk2; [L14] int p3 = __VERIFIER_nondet_int(); [L15] int lk3; [L17] int p4 = __VERIFIER_nondet_int(); [L18] int lk4; [L20] int p5 = __VERIFIER_nondet_int(); [L21] int lk5; [L23] int p6 = __VERIFIER_nondet_int(); [L24] int lk6; [L26] int p7 = __VERIFIER_nondet_int(); [L27] int lk7; [L29] int p8 = __VERIFIER_nondet_int(); [L30] int lk8; [L32] int p9 = __VERIFIER_nondet_int(); [L33] int lk9; [L35] int p10 = __VERIFIER_nondet_int(); [L36] int lk10; [L38] int p11 = __VERIFIER_nondet_int(); [L39] int lk11; [L41] int p12 = __VERIFIER_nondet_int(); [L42] int lk12; [L44] int p13 = __VERIFIER_nondet_int(); [L45] int lk13; [L47] int p14 = __VERIFIER_nondet_int(); [L48] int lk14; [L51] int cond; Loop: [L53] COND TRUE 1 [L54] cond = __VERIFIER_nondet_int() [L55] COND FALSE !(cond == 0) [L58] lk1 = 0 [L60] lk2 = 0 [L62] lk3 = 0 [L64] lk4 = 0 [L66] lk5 = 0 [L68] lk6 = 0 [L70] lk7 = 0 [L72] lk8 = 0 [L74] lk9 = 0 [L76] lk10 = 0 [L78] lk11 = 0 [L80] lk12 = 0 [L82] lk13 = 0 [L84] lk14 = 0 [L88] COND FALSE !(p1 != 0) [L92] COND TRUE p2 != 0 [L93] lk2 = 1 [L96] COND FALSE !(p3 != 0) [L100] COND FALSE !(p4 != 0) [L104] COND FALSE !(p5 != 0) [L108] COND FALSE !(p6 != 0) [L112] COND FALSE !(p7 != 0) [L116] COND FALSE !(p8 != 0) [L120] COND FALSE !(p9 != 0) [L124] COND FALSE !(p10 != 0) [L128] COND FALSE !(p11 != 0) [L132] COND FALSE !(p12 != 0) [L136] COND FALSE !(p13 != 0) [L140] COND TRUE p14 != 0 [L141] lk14 = 1 [L146] COND FALSE !(p1 != 0) [L151] COND TRUE p2 != 0 [L152] COND FALSE !(lk2 != 1) [L153] lk2 = 0 [L156] COND FALSE !(p3 != 0) [L161] COND FALSE !(p4 != 0) [L166] COND FALSE !(p5 != 0) [L171] COND FALSE !(p6 != 0) [L176] COND FALSE !(p7 != 0) [L181] COND FALSE !(p8 != 0) [L186] COND FALSE !(p9 != 0) [L191] COND FALSE !(p10 != 0) [L196] COND FALSE !(p11 != 0) [L201] COND FALSE !(p12 != 0) [L206] COND FALSE !(p13 != 0) [L211] COND TRUE p14 != 0 [L212] COND FALSE !(lk14 != 1) [L213] lk14 = 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-12-28 09:15:22,348 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)