./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 0ed9222f 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 0.1.24-0ed9222-m [2019-01-14 02:22:26,749 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-14 02:22:26,751 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-14 02:22:26,767 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-14 02:22:26,768 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-14 02:22:26,769 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-14 02:22:26,771 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-14 02:22:26,773 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-14 02:22:26,776 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-14 02:22:26,778 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-14 02:22:26,780 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-14 02:22:26,780 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-14 02:22:26,781 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-14 02:22:26,791 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-14 02:22:26,792 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-14 02:22:26,793 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-14 02:22:26,795 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-14 02:22:26,796 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-14 02:22:26,800 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-14 02:22:26,801 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-14 02:22:26,805 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-14 02:22:26,806 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-14 02:22:26,809 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-14 02:22:26,809 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-14 02:22:26,809 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-14 02:22:26,810 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-14 02:22:26,814 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-14 02:22:26,815 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-14 02:22:26,816 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-14 02:22:26,817 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-14 02:22:26,817 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-14 02:22:26,817 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-14 02:22:26,819 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-14 02:22:26,819 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-14 02:22:26,820 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-14 02:22:26,821 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-14 02:22:26,821 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-14 02:22:26,848 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-14 02:22:26,849 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-14 02:22:26,850 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-14 02:22:26,850 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-14 02:22:26,851 INFO L133 SettingsManager]: * Use SBE=true [2019-01-14 02:22:26,851 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-14 02:22:26,851 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-14 02:22:26,852 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-14 02:22:26,852 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-14 02:22:26,852 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-14 02:22:26,852 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-14 02:22:26,852 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-14 02:22:26,853 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-14 02:22:26,854 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-14 02:22:26,855 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-14 02:22:26,855 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-14 02:22:26,856 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-14 02:22:26,856 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-14 02:22:26,856 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-14 02:22:26,857 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-14 02:22:26,857 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-14 02:22:26,857 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-14 02:22:26,857 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-14 02:22:26,859 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-14 02:22:26,859 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 [2019-01-14 02:22:26,897 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-14 02:22:26,916 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-14 02:22:26,923 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-14 02:22:26,924 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-14 02:22:26,925 INFO L276 PluginConnector]: CDTParser initialized [2019-01-14 02:22:26,926 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2019-01-14 02:22:26,992 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df7599d9/7c59dd01674e4de0b283a0b46da25cfa/FLAG25e9f14d2 [2019-01-14 02:22:27,440 INFO L307 CDTParser]: Found 1 translation units. [2019-01-14 02:22:27,441 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2019-01-14 02:22:27,447 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df7599d9/7c59dd01674e4de0b283a0b46da25cfa/FLAG25e9f14d2 [2019-01-14 02:22:27,843 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df7599d9/7c59dd01674e4de0b283a0b46da25cfa [2019-01-14 02:22:27,846 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-14 02:22:27,847 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-14 02:22:27,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-14 02:22:27,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-14 02:22:27,852 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-14 02:22:27,853 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:22:27" (1/1) ... [2019-01-14 02:22:27,858 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@707b848b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:27, skipping insertion in model container [2019-01-14 02:22:27,859 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.01 02:22:27" (1/1) ... [2019-01-14 02:22:27,865 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-14 02:22:27,881 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-14 02:22:28,036 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:22:28,041 INFO L191 MainTranslator]: Completed pre-run [2019-01-14 02:22:28,060 INFO L208 PostProcessor]: Analyzing one entry point: main [2019-01-14 02:22:28,075 INFO L195 MainTranslator]: Completed translation [2019-01-14 02:22:28,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28 WrapperNode [2019-01-14 02:22:28,076 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-14 02:22:28,077 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-14 02:22:28,077 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-14 02:22:28,077 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-14 02:22:28,088 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,095 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,119 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-14 02:22:28,120 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-14 02:22:28,120 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-14 02:22:28,120 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-14 02:22:28,132 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,133 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,134 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,134 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,149 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (1/1) ... [2019-01-14 02:22:28,151 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-14 02:22:28,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-14 02:22:28,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-14 02:22:28,152 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-14 02:22:28,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (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 [2019-01-14 02:22:28,339 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-14 02:22:28,340 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-14 02:22:28,618 INFO L281 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-14 02:22:28,619 INFO L286 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-14 02:22:28,620 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:22:28 BoogieIcfgContainer [2019-01-14 02:22:28,621 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-14 02:22:28,622 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-14 02:22:28,622 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-14 02:22:28,634 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-14 02:22:28,635 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:22:28,635 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 14.01 02:22:27" (1/3) ... [2019-01-14 02:22:28,637 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53fd9ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:22:28, skipping insertion in model container [2019-01-14 02:22:28,643 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:22:28,643 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.01 02:22:28" (2/3) ... [2019-01-14 02:22:28,644 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@53fd9ea8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 14.01 02:22:28, skipping insertion in model container [2019-01-14 02:22:28,644 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-14 02:22:28,644 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:22:28" (3/3) ... [2019-01-14 02:22:28,650 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD_false-termination_true-no-overflow.c [2019-01-14 02:22:28,747 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-14 02:22:28,755 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-14 02:22:28,755 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-14 02:22:28,755 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-14 02:22:28,756 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-14 02:22:28,756 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-14 02:22:28,756 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-14 02:22:28,756 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-14 02:22:28,756 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-14 02:22:28,793 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-01-14 02:22:28,825 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-01-14 02:22:28,825 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:22:28,825 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:22:28,832 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:22:28,832 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:22:28,833 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-14 02:22:28,833 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-01-14 02:22:28,834 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-01-14 02:22:28,834 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-14 02:22:28,835 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-14 02:22:28,835 INFO L867 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-14 02:22:28,835 INFO L868 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-14 02:22:28,842 INFO L794 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2019-01-14 02:22:28,843 INFO L796 eck$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 [2019-01-14 02:22:28,848 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:22:28,849 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-14 02:22:28,851 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:22:28,851 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:22:28,896 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,897 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:22:28,897 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:28,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:22:28,945 INFO L82 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2019-01-14 02:22:28,945 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:22:28,945 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:22:28,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,950 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:22:28,950 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:28,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:28,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-14 02:22:28,978 INFO L82 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2019-01-14 02:22:28,978 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-14 02:22:28,979 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-14 02:22:28,980 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-14 02:22:28,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-14 02:22:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:28,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-14 02:22:29,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 14.01 02:22:29 BoogieIcfgContainer [2019-01-14 02:22:29,265 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-14 02:22:29,266 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-14 02:22:29,266 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-14 02:22:29,266 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-14 02:22:29,267 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.01 02:22:28" (3/4) ... [2019-01-14 02:22:29,271 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-14 02:22:29,310 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-14 02:22:29,311 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-14 02:22:29,311 INFO L168 Benchmark]: Toolchain (without parser) took 1464.77 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -119.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:22:29,313 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:22:29,314 INFO L168 Benchmark]: CACSL2BoogieTranslator took 228.28 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-14 02:22:29,315 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.63 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:22:29,315 INFO L168 Benchmark]: Boogie Preprocessor took 31.41 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:22:29,316 INFO L168 Benchmark]: RCFGBuilder took 469.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-14 02:22:29,316 INFO L168 Benchmark]: BuchiAutomizer took 643.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. [2019-01-14 02:22:29,317 INFO L168 Benchmark]: Witness Printer took 44.56 ms. Allocated memory is still 1.1 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-14 02:22:29,321 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 978.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 228.28 ms. Allocated memory is still 1.0 GB. Free memory was 951.4 MB in the beginning and 940.6 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 42.63 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 31.41 ms. Allocated memory is still 1.0 GB. Free memory is still 940.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 469.12 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -151.2 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 643.59 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 21.4 MB). Peak memory consumption was 21.4 MB. Max. memory is 11.5 GB. * Witness Printer took 44.56 ms. Allocated memory is still 1.1 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 0.5s 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@3faa215b=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@1dc17ea8=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...