./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 1dbac8bc Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer --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 0.1.23-1dbac8b [2018-10-27 06:11:35,289 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:11:35,291 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:11:35,300 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:11:35,300 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:11:35,301 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:11:35,302 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:11:35,303 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:11:35,304 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:11:35,305 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:11:35,305 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:11:35,305 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:11:35,306 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:11:35,307 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:11:35,309 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:11:35,309 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:11:35,310 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:11:35,311 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:11:35,312 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:11:35,313 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:11:35,314 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:11:35,316 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:11:35,317 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:11:35,318 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:11:35,318 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:11:35,319 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:11:35,320 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:11:35,320 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:11:35,321 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:11:35,322 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:11:35,322 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:11:35,322 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:11:35,322 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:11:35,322 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:11:35,323 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:11:35,324 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:11:35,324 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:11:35,336 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:11:35,336 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:11:35,337 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:11:35,337 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:11:35,337 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:11:35,337 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:11:35,337 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:11:35,337 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:11:35,337 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:11:35,338 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:11:35,338 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:11:35,339 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:11:35,339 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:11:35,339 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:11:35,339 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:11:35,339 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:11:35,340 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:11:35,340 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:11:35,341 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:11:35,341 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:11:35,341 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:11:35,341 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:11:35,342 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:11:35,342 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 -> /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer 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 [2018-10-27 06:11:35,370 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:11:35,383 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:11:35,390 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:11:35,391 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:11:35,391 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:11:35,392 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2018-10-27 06:11:35,436 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/data/f04d1f824/64907b1d083d43e1b06aefccbb8ab870/FLAG0fb6ebbba [2018-10-27 06:11:35,804 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:11:35,804 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/sv-benchmarks/c/termination-restricted-15/GCD_false-termination_true-no-overflow.c [2018-10-27 06:11:35,809 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/data/f04d1f824/64907b1d083d43e1b06aefccbb8ab870/FLAG0fb6ebbba [2018-10-27 06:11:35,819 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/data/f04d1f824/64907b1d083d43e1b06aefccbb8ab870 [2018-10-27 06:11:35,824 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:11:35,825 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:11:35,827 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:35,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:11:35,832 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:11:35,833 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:35" (1/1) ... [2018-10-27 06:11:35,835 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38c4bde5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:35, skipping insertion in model container [2018-10-27 06:11:35,835 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:11:35" (1/1) ... [2018-10-27 06:11:35,846 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:11:35,862 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:11:35,984 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:35,986 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:11:35,998 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:11:36,007 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:11:36,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36 WrapperNode [2018-10-27 06:11:36,007 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:11:36,008 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:36,008 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:11:36,008 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:11:36,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,020 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,030 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:11:36,031 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:11:36,031 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:11:36,031 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:11:36,038 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,038 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,038 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,038 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,039 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,042 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... [2018-10-27 06:11:36,044 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:11:36,044 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:11:36,044 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:11:36,044 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:11:36,045 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/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 [2018-10-27 06:11:36,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:11:36,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:11:36,444 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:11:36,444 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:36 BoogieIcfgContainer [2018-10-27 06:11:36,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:11:36,445 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:11:36,445 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:11:36,449 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:11:36,449 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:36,450 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:11:35" (1/3) ... [2018-10-27 06:11:36,451 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4240d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:36, skipping insertion in model container [2018-10-27 06:11:36,451 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:36,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:11:36" (2/3) ... [2018-10-27 06:11:36,452 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@4240d71d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:11:36, skipping insertion in model container [2018-10-27 06:11:36,452 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:11:36,452 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:36" (3/3) ... [2018-10-27 06:11:36,454 INFO L375 chiAutomizerObserver]: Analyzing ICFG GCD_false-termination_true-no-overflow.c [2018-10-27 06:11:36,508 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:11:36,509 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:11:36,509 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:11:36,509 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:11:36,509 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:11:36,509 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:11:36,509 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:11:36,509 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:11:36,509 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:11:36,546 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:11:36,564 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:11:36,564 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:36,565 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:36,572 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:11:36,572 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:36,572 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:11:36,572 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-10-27 06:11:36,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 7 [2018-10-27 06:11:36,573 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:11:36,573 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:11:36,574 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2018-10-27 06:11:36,574 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-10-27 06:11:36,588 INFO L793 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 8#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L13-3true [2018-10-27 06:11:36,595 INFO L795 eck$LassoCheckResult]: Loop: 9#L13-3true assume true; 13#L13-1true assume !!(main_~y~0 != 0);main_~tmp~0 := main_~y~0;main_~xtmp~0 := main_~x~0; 3#L17true assume main_~x~0 <= 0 || main_~y~0 <= 0;main_~y~0 := 0; 4#L23-4true main_~y~0 := main_~xtmp~0;main_~x~0 := main_~tmp~0; 9#L13-3true [2018-10-27 06:11:36,600 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:36,601 INFO L82 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2018-10-27 06:11:36,602 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:36,603 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:36,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,658 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:36,658 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,687 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:36,687 INFO L82 PathProgramCache]: Analyzing trace with hash 1114300, now seen corresponding path program 1 times [2018-10-27 06:11:36,687 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:36,687 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:36,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,689 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:36,689 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,703 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:11:36,703 INFO L82 PathProgramCache]: Analyzing trace with hash 889541502, now seen corresponding path program 1 times [2018-10-27 06:11:36,704 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:11:36,704 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:11:36,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,705 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:11:36,705 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:11:36,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:11:36,857 WARN L179 SmtUtils]: Spent 135.00 ms on a formula simplification that was a NOOP. DAG size: 19 [2018-10-27 06:11:36,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:11:36 BoogieIcfgContainer [2018-10-27 06:11:36,975 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:11:36,975 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:11:36,976 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:11:36,976 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:11:36,976 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:11:36" (3/4) ... [2018-10-27 06:11:36,979 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-10-27 06:11:37,008 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_9c0a889f-2592-43a5-8daf-2bc7aa997244/bin-2019/uautomizer/witness.graphml [2018-10-27 06:11:37,008 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:11:37,009 INFO L168 Benchmark]: Toolchain (without parser) took 1184.44 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 964.5 MB in the beginning and 1.1 GB in the end (delta: -145.1 MB). Peak memory consumption was 6.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,009 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:37,010 INFO L168 Benchmark]: CACSL2BoogieTranslator took 180.28 ms. Allocated memory is still 1.0 GB. Free memory was 964.5 MB in the beginning and 952.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,010 INFO L168 Benchmark]: Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:11:37,010 INFO L168 Benchmark]: Boogie Preprocessor took 12.91 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,011 INFO L168 Benchmark]: RCFGBuilder took 400.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,011 INFO L168 Benchmark]: BuchiAutomizer took 529.77 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,012 INFO L168 Benchmark]: Witness Printer took 32.49 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: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:11:37,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 982.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 180.28 ms. Allocated memory is still 1.0 GB. Free memory was 964.5 MB in the beginning and 952.7 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 22.74 ms. Allocated memory is still 1.0 GB. Free memory is still 952.7 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.91 ms. Allocated memory is still 1.0 GB. Free memory was 952.7 MB in the beginning and 947.3 MB in the end (delta: 5.4 MB). Peak memory consumption was 5.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 400.75 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 152.0 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -192.4 MB). Peak memory consumption was 20.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 529.77 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: 24.7 MB). Peak memory consumption was 24.7 MB. Max. memory is 11.5 GB. * Witness Printer took 32.49 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: 5.4 MB). Peak memory consumption was 5.4 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {xtmp=-1, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7dda0222=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@4c39c8ef=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...