./Ultimate.py --spec ../sv-benchmarks/c/properties/termination.prp --file ../sv-benchmarks/c/termination-restricted-15/GCD2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 30f4e4ab Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.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/termination-restricted-15/GCD2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-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 64bit --witnessprinter.graph.data.programhash f19bc75dcbe901d738916f7ca817c5a4f2f97f97 ....................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-30f4e4a [2019-11-28 02:58:21,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 02:58:21,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 02:58:21,847 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 02:58:21,848 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 02:58:21,850 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 02:58:21,853 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 02:58:21,868 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 02:58:21,870 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 02:58:21,871 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 02:58:21,873 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 02:58:21,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 02:58:21,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 02:58:21,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 02:58:21,881 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 02:58:21,884 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 02:58:21,886 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 02:58:21,889 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 02:58:21,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 02:58:21,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 02:58:21,894 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 02:58:21,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 02:58:21,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 02:58:21,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 02:58:21,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 02:58:21,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 02:58:21,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 02:58:21,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 02:58:21,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 02:58:21,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 02:58:21,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 02:58:21,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 02:58:21,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 02:58:21,906 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 02:58:21,907 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 02:58:21,907 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 02:58:21,908 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 02:58:21,908 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 02:58:21,908 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 02:58:21,909 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 02:58:21,910 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 02:58:21,911 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-28 02:58:21,928 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 02:58:21,929 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 02:58:21,930 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 02:58:21,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 02:58:21,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 02:58:21,931 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-28 02:58:21,931 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-28 02:58:21,931 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-28 02:58:21,931 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-28 02:58:21,932 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-28 02:58:21,932 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-28 02:58:21,932 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 02:58:21,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 02:58:21,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 02:58:21,933 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 02:58:21,933 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-28 02:58:21,933 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-28 02:58:21,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-28 02:58:21,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-28 02:58:21,934 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-28 02:58:21,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 02:58:21,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-28 02:58:21,934 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 02:58:21,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 02:58:21,935 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-28 02:58:21,935 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 02:58:21,935 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 02:58:21,935 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-28 02:58:21,937 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-28 02:58:21,937 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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 -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f19bc75dcbe901d738916f7ca817c5a4f2f97f97 [2019-11-28 02:58:22,244 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 02:58:22,262 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 02:58:22,266 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 02:58:22,268 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 02:58:22,270 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 02:58:22,272 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/termination-restricted-15/GCD2.c [2019-11-28 02:58:22,351 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23410cf21/e849ca22bebe40eabc6124cb043fc9c2/FLAG3f3e3efa3 [2019-11-28 02:58:22,869 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 02:58:22,872 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/termination-restricted-15/GCD2.c [2019-11-28 02:58:22,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23410cf21/e849ca22bebe40eabc6124cb043fc9c2/FLAG3f3e3efa3 [2019-11-28 02:58:23,223 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/23410cf21/e849ca22bebe40eabc6124cb043fc9c2 [2019-11-28 02:58:23,226 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 02:58:23,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-28 02:58:23,229 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:23,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 02:58:23,233 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 02:58:23,234 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,237 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ff1b695 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23, skipping insertion in model container [2019-11-28 02:58:23,237 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,246 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 02:58:23,271 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 02:58:23,457 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:23,464 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 02:58:23,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 02:58:23,502 INFO L208 MainTranslator]: Completed translation [2019-11-28 02:58:23,502 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23 WrapperNode [2019-11-28 02:58:23,502 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 02:58:23,503 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:23,503 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-28 02:58:23,503 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-28 02:58:23,510 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,515 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,531 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-28 02:58:23,531 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 02:58:23,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 02:58:23,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 02:58:23,604 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,605 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,606 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,606 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,608 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,613 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,614 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... [2019-11-28 02:58:23,615 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 02:58:23,615 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 02:58:23,616 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 02:58:23,616 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 02:58:23,617 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-28 02:58:23,669 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 02:58:23,669 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 02:58:23,822 INFO L292 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 02:58:23,824 INFO L297 CfgBuilder]: Removed 6 assume(true) statements. [2019-11-28 02:58:23,825 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:23 BoogieIcfgContainer [2019-11-28 02:58:23,825 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 02:58:23,826 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-28 02:58:23,826 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-28 02:58:23,829 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-28 02:58:23,831 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:23,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 02:58:23" (1/3) ... [2019-11-28 02:58:23,832 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e8d7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:23, skipping insertion in model container [2019-11-28 02:58:23,832 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:23,832 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 02:58:23" (2/3) ... [2019-11-28 02:58:23,833 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e8d7c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 02:58:23, skipping insertion in model container [2019-11-28 02:58:23,833 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-28 02:58:23,833 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:23" (3/3) ... [2019-11-28 02:58:23,835 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD2.c [2019-11-28 02:58:23,887 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-28 02:58:23,887 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-28 02:58:23,887 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-28 02:58:23,887 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 02:58:23,888 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 02:58:23,888 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-28 02:58:23,888 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 02:58:23,888 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-28 02:58:23,910 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-28 02:58:23,955 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:58:23,956 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:23,956 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:23,979 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:23,980 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:23,981 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-28 02:58:23,981 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-11-28 02:58:23,982 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-11-28 02:58:23,983 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-28 02:58:23,983 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-28 02:58:23,984 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-11-28 02:58:23,984 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-28 02:58:23,995 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L13-2true [2019-11-28 02:58:23,996 INFO L796 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!((0 != main_~y~0 && main_~x~0 >= 0) && main_~y~0 >= 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 6#L17true assume main_~x~0 == main_~y~0;main_~y~0 := 0; 8#L21-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 5#L13-2true [2019-11-28 02:58:24,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:24,004 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-11-28 02:58:24,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:24,016 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995480399] [2019-11-28 02:58:24,016 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:24,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,116 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:24,117 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:24,118 INFO L82 PathProgramCache]: Analyzing trace with hash 39832, now seen corresponding path program 1 times [2019-11-28 02:58:24,118 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:24,125 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458975607] [2019-11-28 02:58:24,126 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:24,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,161 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 02:58:24,168 INFO L82 PathProgramCache]: Analyzing trace with hash 963353, now seen corresponding path program 1 times [2019-11-28 02:58:24,168 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 02:58:24,170 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976609829] [2019-11-28 02:58:24,170 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 02:58:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 02:58:24,195 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 02:58:24,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 02:58:24 BoogieIcfgContainer [2019-11-28 02:58:24,365 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-28 02:58:24,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 02:58:24,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 02:58:24,366 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 02:58:24,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 02:58:23" (3/4) ... [2019-11-28 02:58:24,369 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-28 02:58:24,436 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 02:58:24,436 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 02:58:24,440 INFO L168 Benchmark]: Toolchain (without parser) took 1212.22 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 960.4 MB in the beginning and 1.1 GB in the end (delta: -135.1 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:24,442 INFO L168 Benchmark]: CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:24,443 INFO L168 Benchmark]: CACSL2BoogieTranslator took 273.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:24,444 INFO L168 Benchmark]: Boogie Procedure Inliner took 28.05 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:24,445 INFO L168 Benchmark]: Boogie Preprocessor took 83.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:24,449 INFO L168 Benchmark]: RCFGBuilder took 209.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:24,449 INFO L168 Benchmark]: BuchiAutomizer took 538.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-28 02:58:24,450 INFO L168 Benchmark]: Witness Printer took 71.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 02:58:24,454 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 273.84 ms. Allocated memory is still 1.0 GB. Free memory was 960.4 MB in the beginning and 949.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 28.05 ms. Allocated memory is still 1.0 GB. Free memory is still 949.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 83.71 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 949.6 MB in the beginning and 1.1 GB in the end (delta: -192.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 209.74 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 538.87 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 71.30 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. 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 -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 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: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {xtmp=1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@61d81756=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2ba1a40e=0, x=1, y=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int x; [L7] int y; [L8] int tmp; [L9] int xtmp; [L10] x = __VERIFIER_nondet_int() [L11] y = __VERIFIER_nondet_int() Loop: [L13] COND TRUE (y != 0 && x >= 0) && y >= 0 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x == y [L18] y = 0 [L26] y = xtmp [L27] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...