./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/loop-lit/gsv2008.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 20ed64ec 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/loop-lit/gsv2008.i -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 ad7102f2457c0f5542a3d448f84e7fa5158fff18 ........................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 15:22:35,865 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 15:22:35,866 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 15:22:35,883 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 15:22:35,884 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 15:22:35,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 15:22:35,888 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 15:22:35,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 15:22:35,895 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 15:22:35,899 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 15:22:35,900 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 15:22:35,907 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 15:22:35,907 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 15:22:35,909 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 15:22:35,910 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 15:22:35,911 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 15:22:35,912 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 15:22:35,913 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 15:22:35,914 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 15:22:35,917 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 15:22:35,919 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 15:22:35,920 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 15:22:35,921 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 15:22:35,922 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 15:22:35,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 15:22:35,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 15:22:35,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 15:22:35,927 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 15:22:35,927 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 15:22:35,928 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 15:22:35,928 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 15:22:35,929 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 15:22:35,930 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 15:22:35,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 15:22:35,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 15:22:35,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 15:22:35,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 15:22:35,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 15:22:35,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 15:22:35,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 15:22:35,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 15:22:35,937 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-08-27 15:22:35,965 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 15:22:35,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 15:22:35,966 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 15:22:35,966 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 15:22:35,968 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 15:22:35,968 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 15:22:35,968 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 15:22:35,968 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-08-27 15:22:35,968 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-08-27 15:22:35,968 INFO L138 SettingsManager]: * Use old map elimination=false [2021-08-27 15:22:35,969 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-08-27 15:22:35,969 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-08-27 15:22:35,969 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-08-27 15:22:35,969 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-08-27 15:22:35,970 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 15:22:35,971 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-08-27 15:22:35,971 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 15:22:35,972 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 15:22:35,972 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 15:22:35,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 15:22:35,972 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 15:22:35,973 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-08-27 15:22:35,973 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ad7102f2457c0f5542a3d448f84e7fa5158fff18 [2021-08-27 15:22:36,204 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 15:22:36,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 15:22:36,223 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 15:22:36,224 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 15:22:36,225 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 15:22:36,225 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-lit/gsv2008.i [2021-08-27 15:22:36,270 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785b4b0b6/890c0936dde948478834bcd1634e0922/FLAG294dbedc5 [2021-08-27 15:22:36,639 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 15:22:36,640 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i [2021-08-27 15:22:36,644 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785b4b0b6/890c0936dde948478834bcd1634e0922/FLAG294dbedc5 [2021-08-27 15:22:36,656 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/785b4b0b6/890c0936dde948478834bcd1634e0922 [2021-08-27 15:22:36,658 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 15:22:36,661 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-08-27 15:22:36,662 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 15:22:36,662 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 15:22:36,674 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 15:22:36,674 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52fe466e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36, skipping insertion in model container [2021-08-27 15:22:36,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 15:22:36,689 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 15:22:36,801 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-08-27 15:22:36,806 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:22:36,811 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 15:22:36,819 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-lit/gsv2008.i[895,908] [2021-08-27 15:22:36,821 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 15:22:36,829 INFO L208 MainTranslator]: Completed translation [2021-08-27 15:22:36,830 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36 WrapperNode [2021-08-27 15:22:36,830 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 15:22:36,831 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-08-27 15:22:36,831 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-08-27 15:22:36,831 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-08-27 15:22:36,835 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,839 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,849 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-08-27 15:22:36,850 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 15:22:36,850 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 15:22:36,850 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 15:22:36,855 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,856 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,873 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,873 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,875 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,878 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,878 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 15:22:36,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 15:22:36,879 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 15:22:36,879 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 15:22:36,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (1/1) ... [2021-08-27 15:22:36,888 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:36,893 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:36,903 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) [2021-08-27 15:22:36,908 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 [2021-08-27 15:22:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-08-27 15:22:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 15:22:36,930 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 15:22:36,930 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 15:22:37,062 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 15:22:37,062 INFO L299 CfgBuilder]: Removed 7 assume(true) statements. [2021-08-27 15:22:37,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:37 BoogieIcfgContainer [2021-08-27 15:22:37,064 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 15:22:37,065 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-08-27 15:22:37,065 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-08-27 15:22:37,067 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-08-27 15:22:37,068 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:37,068 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.08 03:22:36" (1/3) ... [2021-08-27 15:22:37,069 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bc4815e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:22:37, skipping insertion in model container [2021-08-27 15:22:37,069 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:37,069 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 03:22:36" (2/3) ... [2021-08-27 15:22:37,069 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@bc4815e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.08 03:22:37, skipping insertion in model container [2021-08-27 15:22:37,070 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-08-27 15:22:37,070 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:37" (3/3) ... [2021-08-27 15:22:37,071 INFO L389 chiAutomizerObserver]: Analyzing ICFG gsv2008.i [2021-08-27 15:22:37,110 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-08-27 15:22:37,110 INFO L360 BuchiCegarLoop]: Hoare is false [2021-08-27 15:22:37,110 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-08-27 15:22:37,110 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-08-27 15:22:37,110 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-08-27 15:22:37,111 INFO L364 BuchiCegarLoop]: Difference is false [2021-08-27 15:22:37,111 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-08-27 15:22:37,111 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-08-27 15:22:37,121 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-08-27 15:22:37,134 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 15:22:37,134 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:37,134 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:37,139 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:22:37,139 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 15:22:37,139 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-08-27 15:22:37,139 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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) [2021-08-27 15:22:37,141 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-08-27 15:22:37,141 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-08-27 15:22:37,141 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-08-27 15:22:37,141 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2021-08-27 15:22:37,141 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-08-27 15:22:37,146 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string0.base, #t~string0.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string0.base, #t~string0.offset, 1);call write~init~int(0, #t~string0.base, 1 + #t~string0.offset, 1);call #t~string1.base, #t~string1.offset := #Ultimate.allocOnStack(9); 10#L-1true havoc main_#res;havoc main_#t~nondet3, main_#t~post4, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := -50;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 9#L28true assume !!(-1000 < main_~y~0 && main_~y~0 < 1000000); 12#L29-2true [2021-08-27 15:22:37,146 INFO L793 eck$LassoCheckResult]: Loop: 12#L29-2true assume !!(main_~x~0 < 0);main_~x~0 := main_~x~0 + main_~y~0;main_#t~post4 := main_~y~0;main_~y~0 := 1 + main_#t~post4;havoc main_#t~post4; 12#L29-2true [2021-08-27 15:22:37,150 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:37,151 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2021-08-27 15:22:37,157 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:37,157 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [380529094] [2021-08-27 15:22:37,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:37,158 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:37,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,224 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:37,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,249 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:37,251 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:37,251 INFO L82 PathProgramCache]: Analyzing trace with hash 47, now seen corresponding path program 1 times [2021-08-27 15:22:37,252 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:37,252 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1510764609] [2021-08-27 15:22:37,252 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:37,252 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:37,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,257 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:37,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,262 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:37,264 INFO L82 PathProgramCache]: Analyzing trace with hash 925676, now seen corresponding path program 1 times [2021-08-27 15:22:37,264 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-08-27 15:22:37,264 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1022092834] [2021-08-27 15:22:37,264 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 15:22:37,265 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-08-27 15:22:37,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,277 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-08-27 15:22:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-08-27 15:22:37,291 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-08-27 15:22:37,359 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:37,359 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:37,360 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:37,360 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:37,360 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-08-27 15:22:37,360 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,360 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:37,360 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:37,361 INFO L133 ssoRankerPreferences]: Filename of dumped script: gsv2008.i_Iteration1_Loop [2021-08-27 15:22:37,361 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:37,361 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:37,373 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:37,388 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:37,448 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:37,449 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-08-27 15:22:37,451 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,452 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,464 INFO L229 MonitoredProcess]: Starting monitored process 2 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) [2021-08-27 15:22:37,526 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-08-27 15:22:37,527 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-08-27 15:22:37,528 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:37,592 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:37,592 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,593 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,597 INFO L229 MonitoredProcess]: Starting monitored process 3 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) [2021-08-27 15:22:37,601 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-08-27 15:22:37,601 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-08-27 15:22:37,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-08-27 15:22:37,690 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-08-27 15:22:37,697 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:37,697 INFO L210 LassoAnalysis]: Preferences: [2021-08-27 15:22:37,697 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-08-27 15:22:37,697 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-08-27 15:22:37,697 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-08-27 15:22:37,697 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-08-27 15:22:37,697 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,697 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-08-27 15:22:37,698 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-08-27 15:22:37,698 INFO L133 ssoRankerPreferences]: Filename of dumped script: gsv2008.i_Iteration1_Loop [2021-08-27 15:22:37,698 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-08-27 15:22:37,698 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-08-27 15:22:37,699 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:37,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-08-27 15:22:37,733 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-08-27 15:22:37,736 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-08-27 15:22:37,739 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,741 INFO L229 MonitoredProcess]: Starting monitored process 4 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) [2021-08-27 15:22:37,756 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-08-27 15:22:37,757 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:22:37,764 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:37,764 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:37,765 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:37,765 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:37,765 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:37,768 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:37,768 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:37,785 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:37,803 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:37,803 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,804 INFO L229 MonitoredProcess]: Starting monitored process 5 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) [2021-08-27 15:22:37,805 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-08-27 15:22:37,806 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:22:37,813 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:37,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:37,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:37,813 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:37,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-08-27 15:22:37,814 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-08-27 15:22:37,814 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:37,825 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-08-27 15:22:37,840 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:37,840 INFO L490 LassoAnalysis]: Using template '2-nested'. [2021-08-27 15:22:37,840 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,841 INFO L229 MonitoredProcess]: Starting monitored process 6 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) [2021-08-27 15:22:37,844 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-08-27 15:22:37,845 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-08-27 15:22:37,852 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-08-27 15:22:37,852 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-08-27 15:22:37,852 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-08-27 15:22:37,852 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-08-27 15:22:37,852 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2021-08-27 15:22:37,854 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2021-08-27 15:22:37,854 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-08-27 15:22:37,876 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-08-27 15:22:37,884 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2021-08-27 15:22:37,884 INFO L444 ModelExtractionUtils]: 2 out of 7 variables were initially zero. Simplification set additionally 1 variables to zero. [2021-08-27 15:22:37,885 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-08-27 15:22:37,885 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 15:22:37,886 INFO L229 MonitoredProcess]: Starting monitored process 7 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) [2021-08-27 15:22:37,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-08-27 15:22:37,887 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-08-27 15:22:37,888 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-08-27 15:22:37,888 INFO L513 LassoAnalysis]: Proved termination. [2021-08-27 15:22:37,888 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = -2*ULTIMATE.start_main_~y~0 + 1 f1 = -2*ULTIMATE.start_main_~x~0 Supporting invariants [] [2021-08-27 15:22:37,905 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:37,907 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-08-27 15:22:37,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 15:22:37,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:37,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2021-08-27 15:22:37,959 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:37,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 15:22:37,980 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 15:22:37,980 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 15:22:37,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 15:22:37,993 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2021-08-27 15:22:37,994 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-08-27 15:22:38,027 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 11 states, 10 states have (on average 1.4) internal successors, (14), 10 states have internal predecessors, (14), 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 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) Result 29 states and 34 transitions. Complement of second has 5 states. [2021-08-27 15:22:38,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-08-27 15:22:38,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 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) [2021-08-27 15:22:38,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 23 transitions. [2021-08-27 15:22:38,031 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 1 letters. [2021-08-27 15:22:38,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:38,032 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 4 letters. Loop has 1 letters. [2021-08-27 15:22:38,032 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:38,033 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 23 transitions. Stem has 3 letters. Loop has 2 letters. [2021-08-27 15:22:38,034 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-08-27 15:22:38,035 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 34 transitions. [2021-08-27 15:22:38,039 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:22:38,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 0 states and 0 transitions. [2021-08-27 15:22:38,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-08-27 15:22:38,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-08-27 15:22:38,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-08-27 15:22:38,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-08-27 15:22:38,042 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:38,042 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:38,043 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-08-27 15:22:38,043 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-08-27 15:22:38,043 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-08-27 15:22:38,043 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-08-27 15:22:38,043 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-08-27 15:22:38,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.08 03:22:38 BoogieIcfgContainer [2021-08-27 15:22:38,049 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-08-27 15:22:38,049 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 15:22:38,049 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 15:22:38,050 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 15:22:38,050 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 03:22:37" (3/4) ... [2021-08-27 15:22:38,052 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 15:22:38,052 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 15:22:38,055 INFO L168 Benchmark]: Toolchain (without parser) took 1392.46 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 26.0 MB in the beginning and 23.1 MB in the end (delta: 3.0 MB). Peak memory consumption was 13.9 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:38,055 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory is still 31.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:22:38,056 INFO L168 Benchmark]: CACSL2BoogieTranslator took 168.35 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 40.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:38,057 INFO L168 Benchmark]: Boogie Procedure Inliner took 18.64 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 39.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:38,057 INFO L168 Benchmark]: Boogie Preprocessor took 28.61 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 38.1 MB in the end (delta: 920.2 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:22:38,058 INFO L168 Benchmark]: RCFGBuilder took 185.04 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 27.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:38,062 INFO L168 Benchmark]: BuchiAutomizer took 983.86 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 23.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. [2021-08-27 15:22:38,062 INFO L168 Benchmark]: Witness Printer took 3.22 ms. Allocated memory is still 58.7 MB. Free memory is still 23.1 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 15:22:38,065 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 48.2 MB. Free memory is still 31.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 168.35 ms. Allocated memory was 48.2 MB in the beginning and 58.7 MB in the end (delta: 10.5 MB). Free memory was 25.8 MB in the beginning and 40.4 MB in the end (delta: -14.6 MB). Peak memory consumption was 9.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 18.64 ms. Allocated memory is still 58.7 MB. Free memory was 40.4 MB in the beginning and 39.0 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 28.61 ms. Allocated memory is still 58.7 MB. Free memory was 39.0 MB in the beginning and 38.1 MB in the end (delta: 920.2 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 185.04 ms. Allocated memory is still 58.7 MB. Free memory was 38.1 MB in the beginning and 27.3 MB in the end (delta: 10.8 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 983.86 ms. Allocated memory is still 58.7 MB. Free memory was 27.1 MB in the beginning and 23.4 MB in the end (delta: 3.7 MB). Peak memory consumption was 2.6 MB. Max. memory is 16.1 GB. * Witness Printer took 3.22 ms. Allocated memory is still 58.7 MB. Free memory is still 23.1 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (0 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has 2-nested ranking function (if -2 * y + 1 > 0 then 1 else 0), (if -2 * y + 1 > 0 then -2 * y + 1 else -2 * x) and consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.9s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.7s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 12 SDslu, 5 SDs, 0 SdLazy, 5 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8ms Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax100 hnf100 lsp100 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq179 hnf92 smp100 dnf100 smp100 tf108 neg100 sie107 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 47ms VariablesStem: 0 VariablesLoop: 4 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 3 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-08-27 15:22:38,089 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-08-27 15:22:38,303 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...