./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-restricted-15/GCD2_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/GCD2_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 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 0.1.24-2e94e6a [2019-01-01 21:39:16,230 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:39:16,232 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:39:16,245 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:39:16,245 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:39:16,246 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:39:16,248 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:39:16,250 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:39:16,252 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:39:16,253 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:39:16,254 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:39:16,254 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:39:16,256 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:39:16,257 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:39:16,258 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:39:16,259 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:39:16,260 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:39:16,262 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:39:16,264 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:39:16,266 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:39:16,268 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:39:16,269 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:39:16,272 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:39:16,272 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:39:16,272 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:39:16,274 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:39:16,275 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:39:16,276 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:39:16,277 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:39:16,278 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:39:16,278 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:39:16,279 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:39:16,280 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:39:16,280 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:39:16,281 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:39:16,282 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:39:16,283 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:39:16,304 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:39:16,304 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:39:16,305 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:39:16,306 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:39:16,306 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:39:16,306 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:39:16,306 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:39:16,306 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:39:16,306 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:39:16,309 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:39:16,309 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:39:16,309 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:39:16,309 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:39:16,310 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:39:16,311 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:39:16,311 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:39:16,311 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:39:16,311 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:39:16,311 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:39:16,312 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:39:16,313 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:39:16,313 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:39:16,314 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:39:16,315 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:39:16,315 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 -> f19bc75dcbe901d738916f7ca817c5a4f2f97f97 [2019-01-01 21:39:16,352 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:39:16,367 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:39:16,371 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:39:16,373 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:39:16,373 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:39:16,375 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-restricted-15/GCD2_false-termination_true-no-overflow.c [2019-01-01 21:39:16,437 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615bbe8bf/76df7f15f91446b98b5b04e4ab53e9be/FLAGe6285d301 [2019-01-01 21:39:16,938 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:39:16,939 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-restricted-15/GCD2_false-termination_true-no-overflow.c [2019-01-01 21:39:16,944 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615bbe8bf/76df7f15f91446b98b5b04e4ab53e9be/FLAGe6285d301 [2019-01-01 21:39:17,290 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/615bbe8bf/76df7f15f91446b98b5b04e4ab53e9be [2019-01-01 21:39:17,293 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:39:17,294 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:39:17,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:39:17,296 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:39:17,299 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:39:17,300 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,303 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@663d00f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17, skipping insertion in model container [2019-01-01 21:39:17,304 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:39:17,328 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:39:17,511 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:39:17,516 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:39:17,536 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:39:17,555 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:39:17,556 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17 WrapperNode [2019-01-01 21:39:17,556 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:39:17,557 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:39:17,557 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:39:17,557 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:39:17,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,573 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,598 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:39:17,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:39:17,599 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:39:17,599 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:39:17,610 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,610 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,612 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,612 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,615 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,621 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (1/1) ... [2019-01-01 21:39:17,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:39:17,625 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:39:17,625 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:39:17,625 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:39:17,626 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (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 21:39:17,791 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:39:17,792 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:39:18,071 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:39:18,072 INFO L280 CfgBuilder]: Removed 6 assue(true) statements. [2019-01-01 21:39:18,072 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:18 BoogieIcfgContainer [2019-01-01 21:39:18,073 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:39:18,073 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:39:18,074 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:39:18,079 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:39:18,080 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:18,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:39:17" (1/3) ... [2019-01-01 21:39:18,081 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41ccda00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:39:18, skipping insertion in model container [2019-01-01 21:39:18,081 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:18,081 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:39:17" (2/3) ... [2019-01-01 21:39:18,082 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@41ccda00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:39:18, skipping insertion in model container [2019-01-01 21:39:18,082 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:39:18,082 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:18" (3/3) ... [2019-01-01 21:39:18,085 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD2_false-termination_true-no-overflow.c [2019-01-01 21:39:18,153 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:39:18,154 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:39:18,154 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:39:18,154 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:39:18,155 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:39:18,156 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:39:18,156 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:39:18,156 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:39:18,156 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:39:18,178 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-01-01 21:39:18,202 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-01-01 21:39:18,202 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:39:18,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:39:18,211 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:39:18,212 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:39:18,212 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:39:18,212 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2019-01-01 21:39:18,214 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2019-01-01 21:39:18,214 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:39:18,214 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:39:18,215 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-01-01 21:39:18,215 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:39:18,224 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 5#L13-2true [2019-01-01 21:39:18,225 INFO L796 eck$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 [2019-01-01 21:39:18,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:18,233 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-01-01 21:39:18,235 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:18,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:18,294 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,295 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:18,295 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:18,344 INFO L82 PathProgramCache]: Analyzing trace with hash 39832, now seen corresponding path program 1 times [2019-01-01 21:39:18,344 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:18,344 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:18,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,347 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:18,347 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:39:18,368 INFO L82 PathProgramCache]: Analyzing trace with hash 963353, now seen corresponding path program 1 times [2019-01-01 21:39:18,368 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:39:18,368 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:39:18,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,370 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:39:18,370 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:39:18,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:39:18,655 WARN L181 SmtUtils]: Spent 259.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2019-01-01 21:39:18,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:39:18 BoogieIcfgContainer [2019-01-01 21:39:18,749 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:39:18,750 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:39:18,750 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:39:18,750 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:39:18,751 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:39:18" (3/4) ... [2019-01-01 21:39:18,755 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 21:39:18,805 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:39:18,806 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:39:18,806 INFO L168 Benchmark]: Toolchain (without parser) took 1512.84 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 951.4 MB in the beginning and 1.1 GB in the end (delta: -144.1 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:39:18,808 INFO L168 Benchmark]: CDTParser took 0.19 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. [2019-01-01 21:39:18,809 INFO L168 Benchmark]: CACSL2BoogieTranslator took 260.83 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. [2019-01-01 21:39:18,809 INFO L168 Benchmark]: Boogie Procedure Inliner took 41.45 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. [2019-01-01 21:39:18,811 INFO L168 Benchmark]: Boogie Preprocessor took 25.74 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. [2019-01-01 21:39:18,811 INFO L168 Benchmark]: RCFGBuilder took 448.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:18,812 INFO L168 Benchmark]: BuchiAutomizer took 675.96 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. [2019-01-01 21:39:18,814 INFO L168 Benchmark]: Witness Printer took 55.93 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. [2019-01-01 21:39:18,818 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 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 260.83 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 41.45 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 25.74 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 448.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 940.6 MB in the beginning and 1.1 GB in the end (delta: -175.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 675.96 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: 20.5 MB). Peak memory consumption was 20.5 MB. Max. memory is 11.5 GB. * Witness Printer took 55.93 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 0.6s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. 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@490e9940=0, tmp=1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5ee5c560=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...