./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: 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 /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.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 3a668603f73a848e02f189ca3bd9be8e08411aae ...................................................................................................................................................................................................................................................................... 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 0.1.24-2e94e6a [2019-01-01 21:39:18,896 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:39:18,898 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:39:18,920 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:39:18,921 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:39:18,923 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:39:18,926 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:39:18,930 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:39:18,933 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:39:18,934 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:39:18,938 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:39:18,938 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:39:18,939 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:39:18,942 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:39:18,948 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:39:18,954 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:39:18,959 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:39:18,960 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:39:18,964 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:39:18,966 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:39:18,967 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:39:18,968 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:39:18,972 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:39:18,974 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:39:18,974 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:39:18,975 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:39:18,976 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:39:18,977 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:39:18,977 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:39:18,984 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:39:18,986 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:39:18,987 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:39:18,987 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:39:18,987 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:39:18,990 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:39:18,991 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:39:18,993 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:39:19,023 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:39:19,024 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:39:19,026 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:39:19,027 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:39:19,027 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:39:19,028 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:39:19,029 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:39:19,029 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:39:19,030 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:39:19,030 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:39:19,030 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:39:19,030 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:39:19,030 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:39:19,031 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:39:19,031 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:39:19,032 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:39:19,032 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:39:19,032 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:39:19,032 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:39:19,032 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:39:19,033 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:39:19,033 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:39:19,033 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:39:19,033 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:39:19,033 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:39:19,036 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:39:19,036 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:39:19,036 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:39:19,037 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:39:19,038 INFO L133 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 -> 3a668603f73a848e02f189ca3bd9be8e08411aae [2019-01-01 21:39:19,088 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:39:19,107 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:39:19,114 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:39:19,116 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:39:19,116 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:39:19,117 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2019-01-01 21:39:19,182 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58809cef/d8f1f243b05f4255a807e40369211370/FLAG6b73dc1fd [2019-01-01 21:39:19,622 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:39:19,623 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2019-01-01 21:39:19,631 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58809cef/d8f1f243b05f4255a807e40369211370/FLAG6b73dc1fd [2019-01-01 21:39:19,994 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a58809cef/d8f1f243b05f4255a807e40369211370 [2019-01-01 21:39:19,999 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:39:20,000 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:39:20,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:39:20,002 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:39:20,006 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:39:20,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:39:19" (1/1) ... [2019-01-01 21:39:20,011 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@256bc0f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20, skipping insertion in model container [2019-01-01 21:39:20,012 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:39:19" (1/1) ... [2019-01-01 21:39:20,020 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:39:20,037 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:39:20,218 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:39:20,222 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:39:20,240 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:39:20,256 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:39:20,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20 WrapperNode [2019-01-01 21:39:20,257 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:39:20,257 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:39:20,257 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:39:20,258 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:39:20,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,271 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,289 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:39:20,290 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:39:20,290 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:39:20,290 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:39:20,298 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,298 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,299 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,299 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,306 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (1/1) ... [2019-01-01 21:39:20,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:39:20,308 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:39:20,308 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:39:20,308 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:39:20,309 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (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 [2019-01-01 21:39:20,448 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:39:20,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:39:20,661 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:39:20,662 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-01 21:39:20,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:20 BoogieIcfgContainer [2019-01-01 21:39:20,662 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:39:20,663 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:39:20,663 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:39:20,668 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:39:20,669 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:20,669 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:39:19" (1/3) ... [2019-01-01 21:39:20,671 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55ad22ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:39:20, skipping insertion in model container [2019-01-01 21:39:20,671 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:20,671 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:20" (2/3) ... [2019-01-01 21:39:20,671 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@55ad22ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:39:20, skipping insertion in model container [2019-01-01 21:39:20,672 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:20,672 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:20" (3/3) ... [2019-01-01 21:39:20,674 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD_false-termination_true-no-overflow.c [2019-01-01 21:39:20,764 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:39:20,765 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:39:20,765 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:39:20,765 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:39:20,766 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:39:20,766 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:39:20,766 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:39:20,766 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:39:20,766 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:39:20,786 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-01-01 21:39:20,829 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-01-01 21:39:20,830 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:39:20,830 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:39:20,840 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:39:20,840 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:39:20,840 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:39:20,841 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-01-01 21:39:20,842 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-01-01 21:39:20,843 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:39:20,843 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:39:20,844 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:39:20,844 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:39:20,862 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2019-01-01 21:39:20,862 INFO L796 eck$LassoCheckResult]: Loop: 6#L13-2true assume !!(0 != main_~y~0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 7#L17true assume main_~x~0 <= 0 || main_~y~0 <= 0;main_~y~0 := 0; 11#L23-3true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 6#L13-2true [2019-01-01 21:39:20,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:20,870 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:39:20,872 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:20,873 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:20,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:20,935 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:20,935 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:20,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:20,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:20,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:20,979 INFO L82 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2019-01-01 21:39:20,979 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:20,980 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:20,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:20,982 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:20,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:20,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:21,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:21,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:21,013 INFO L82 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2019-01-01 21:39:21,013 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:21,013 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:21,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:21,015 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:21,015 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:21,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:21,303 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:39:21 BoogieIcfgContainer [2019-01-01 21:39:21,304 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:39:21,304 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:39:21,304 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:39:21,304 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:39:21,305 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:20" (3/4) ... [2019-01-01 21:39:21,309 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 21:39:21,379 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:39:21,381 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:39:21,382 INFO L168 Benchmark]: Toolchain (without parser) took 1382.50 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -138.9 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:39:21,386 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:39:21,386 INFO L168 Benchmark]: CACSL2BoogieTranslator took 255.49 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:21,387 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.93 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:39:21,390 INFO L168 Benchmark]: Boogie Preprocessor took 18.09 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:39:21,390 INFO L168 Benchmark]: RCFGBuilder took 354.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:21,393 INFO L168 Benchmark]: BuchiAutomizer took 640.29 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:21,394 INFO L168 Benchmark]: Witness Printer took 76.90 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: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:21,406 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 255.49 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.2 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 31.93 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.09 ms. Allocated memory is still 1.0 GB. Free memory is still 935.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 354.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 935.2 MB in the beginning and 1.1 GB in the end (delta: -176.7 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 640.29 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: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 11.5 GB. * Witness Printer took 76.90 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: 6.8 MB). Peak memory consumption was 6.8 MB. 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 0.5s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.4s. 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@4dc6fe12=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60e5cd7d=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 [L14] tmp = y [L15] xtmp = x [L17] COND TRUE x <= 0 || y <= 0 [L18] y = 0 [L29] y = xtmp [L30] x = tmp End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...