./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version cad46833 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/GCD-1.c -s /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/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 0.1.24-cad4683 [2019-10-22 09:03:04,680 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-22 09:03:04,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-22 09:03:04,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-22 09:03:04,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-22 09:03:04,693 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-22 09:03:04,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-22 09:03:04,696 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-22 09:03:04,697 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-22 09:03:04,697 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-22 09:03:04,698 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-22 09:03:04,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-22 09:03:04,699 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-22 09:03:04,700 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-22 09:03:04,700 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-22 09:03:04,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-22 09:03:04,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-22 09:03:04,707 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-22 09:03:04,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-22 09:03:04,710 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-22 09:03:04,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-22 09:03:04,713 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-22 09:03:04,714 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-22 09:03:04,715 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-22 09:03:04,718 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-22 09:03:04,718 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-22 09:03:04,718 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-22 09:03:04,719 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-22 09:03:04,719 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-22 09:03:04,720 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-22 09:03:04,720 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-22 09:03:04,721 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-22 09:03:04,726 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-22 09:03:04,727 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-22 09:03:04,728 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-22 09:03:04,728 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-22 09:03:04,729 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-22 09:03:04,729 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-22 09:03:04,729 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-22 09:03:04,730 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-22 09:03:04,736 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-22 09:03:04,736 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-10-22 09:03:04,754 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-22 09:03:04,755 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-22 09:03:04,757 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-10-22 09:03:04,758 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-10-22 09:03:04,758 INFO L138 SettingsManager]: * Use SBE=true [2019-10-22 09:03:04,758 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-10-22 09:03:04,758 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-10-22 09:03:04,759 INFO L138 SettingsManager]: * Use old map elimination=false [2019-10-22 09:03:04,759 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-10-22 09:03:04,759 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-10-22 09:03:04,759 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-10-22 09:03:04,759 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-22 09:03:04,759 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-22 09:03:04,760 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-10-22 09:03:04,761 INFO L138 SettingsManager]: * Use constant arrays=true [2019-10-22 09:03:04,761 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-10-22 09:03:04,761 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-22 09:03:04,761 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-22 09:03:04,761 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-10-22 09:03:04,761 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-22 09:03:04,761 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-10-22 09:03:04,762 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-10-22 09:03:04,764 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-10-22 09:03:04,764 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/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 [2019-10-22 09:03:04,792 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-22 09:03:04,802 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-22 09:03:04,805 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-22 09:03:04,806 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-22 09:03:04,807 INFO L275 PluginConnector]: CDTParser initialized [2019-10-22 09:03:04,807 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/../../sv-benchmarks/c/termination-restricted-15/GCD-1.c [2019-10-22 09:03:04,852 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/data/b262b47eb/f923216cb15648d387dbc333bf0b54e8/FLAG9a5d6c412 [2019-10-22 09:03:05,255 INFO L306 CDTParser]: Found 1 translation units. [2019-10-22 09:03:05,256 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/sv-benchmarks/c/termination-restricted-15/GCD-1.c [2019-10-22 09:03:05,261 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/data/b262b47eb/f923216cb15648d387dbc333bf0b54e8/FLAG9a5d6c412 [2019-10-22 09:03:05,273 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/data/b262b47eb/f923216cb15648d387dbc333bf0b54e8 [2019-10-22 09:03:05,275 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-22 09:03:05,276 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-10-22 09:03:05,277 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-22 09:03:05,277 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-22 09:03:05,280 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-22 09:03:05,281 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,283 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29bfbe8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05, skipping insertion in model container [2019-10-22 09:03:05,284 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,290 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-22 09:03:05,304 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-22 09:03:05,428 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:03:05,432 INFO L188 MainTranslator]: Completed pre-run [2019-10-22 09:03:05,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-22 09:03:05,515 INFO L192 MainTranslator]: Completed translation [2019-10-22 09:03:05,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05 WrapperNode [2019-10-22 09:03:05,515 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-22 09:03:05,516 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-10-22 09:03:05,516 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-10-22 09:03:05,516 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-10-22 09:03:05,526 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,531 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,548 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-10-22 09:03:05,548 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-22 09:03:05,548 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-22 09:03:05,548 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-22 09:03:05,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,558 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,560 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,564 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,565 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... [2019-10-22 09:03:05,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-22 09:03:05,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-22 09:03:05,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-22 09:03:05,567 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-22 09:03:05,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/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 [2019-10-22 09:03:05,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-22 09:03:05,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-22 09:03:05,779 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-22 09:03:05,779 INFO L284 CfgBuilder]: Removed 6 assume(true) statements. [2019-10-22 09:03:05,780 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:05 BoogieIcfgContainer [2019-10-22 09:03:05,780 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-22 09:03:05,781 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-10-22 09:03:05,781 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-10-22 09:03:05,785 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-10-22 09:03:05,786 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:03:05,798 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 22.10 09:03:05" (1/3) ... [2019-10-22 09:03:05,799 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@460284c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:03:05, skipping insertion in model container [2019-10-22 09:03:05,799 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:03:05,799 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.10 09:03:05" (2/3) ... [2019-10-22 09:03:05,799 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@460284c1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 22.10 09:03:05, skipping insertion in model container [2019-10-22 09:03:05,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-10-22 09:03:05,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:05" (3/3) ... [2019-10-22 09:03:05,801 INFO L371 chiAutomizerObserver]: Analyzing ICFG GCD-1.c [2019-10-22 09:03:05,914 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-10-22 09:03:05,915 INFO L357 BuchiCegarLoop]: Hoare is false [2019-10-22 09:03:05,915 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-10-22 09:03:05,915 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-22 09:03:05,915 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-22 09:03:05,915 INFO L361 BuchiCegarLoop]: Difference is false [2019-10-22 09:03:05,915 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-22 09:03:05,916 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-10-22 09:03:05,930 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 09:03:05,953 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:03:05,953 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:03:05,954 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:03:05,960 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:03:05,961 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:03:05,961 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-10-22 09:03:05,962 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2019-10-22 09:03:05,963 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2019-10-22 09:03:05,964 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-10-22 09:03:05,964 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-10-22 09:03:05,964 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1] [2019-10-22 09:03:05,964 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-10-22 09:03:05,971 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~tmp~0, main_~xtmp~0;havoc main_~x~0;havoc main_~y~0;havoc main_~tmp~0;havoc main_~xtmp~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 6#L13-2true [2019-10-22 09:03:05,972 INFO L793 eck$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 [2019-10-22 09:03:05,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:05,977 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2019-10-22 09:03:05,984 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:05,985 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [50235570] [2019-10-22 09:03:05,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:05,986 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:05,986 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,064 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:03:06,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:06,066 INFO L82 PathProgramCache]: Analyzing trace with hash 39837, now seen corresponding path program 1 times [2019-10-22 09:03:06,066 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:06,066 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857941988] [2019-10-22 09:03:06,066 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,066 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,067 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,081 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:03:06,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-22 09:03:06,083 INFO L82 PathProgramCache]: Analyzing trace with hash 963358, now seen corresponding path program 1 times [2019-10-22 09:03:06,083 INFO L157 tionRefinementEngine]: Executing refinement strategy CAMEL [2019-10-22 09:03:06,083 INFO L342 tionRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013231464] [2019-10-22 09:03:06,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,084 INFO L116 rtionOrderModulation]: Craig_NestedInterpolation forces the order to NOT_INCREMENTALLY [2019-10-22 09:03:06,084 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-22 09:03:06,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-10-22 09:03:06,097 INFO L168 tionRefinementEngine]: Strategy CAMEL found a feasible trace [2019-10-22 09:03:06,209 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 22.10 09:03:06 BoogieIcfgContainer [2019-10-22 09:03:06,209 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-10-22 09:03:06,209 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-10-22 09:03:06,210 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-10-22 09:03:06,210 INFO L275 PluginConnector]: Witness Printer initialized [2019-10-22 09:03:06,210 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.10 09:03:05" (3/4) ... [2019-10-22 09:03:06,213 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-10-22 09:03:06,250 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_16e92418-7388-4ff9-a7d0-ecf832b508b2/bin/uautomizer/witness.graphml [2019-10-22 09:03:06,251 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-10-22 09:03:06,252 INFO L168 Benchmark]: Toolchain (without parser) took 975.97 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 944.5 MB in the beginning and 1.1 GB in the end (delta: -172.8 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:06,253 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:06,253 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:06,254 INFO L168 Benchmark]: Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:06,254 INFO L168 Benchmark]: Boogie Preprocessor took 18.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-10-22 09:03:06,255 INFO L168 Benchmark]: RCFGBuilder took 213.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:06,255 INFO L168 Benchmark]: BuchiAutomizer took 428.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-10-22 09:03:06,256 INFO L168 Benchmark]: Witness Printer took 41.24 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. [2019-10-22 09:03:06,258 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 962.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 238.99 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 167.8 MB). Free memory was 944.5 MB in the beginning and 1.2 GB in the end (delta: -220.7 MB). Peak memory consumption was 22.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 31.94 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.29 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 213.94 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 428.16 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 41.24 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 0.2s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. 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@676db511=0, tmp=-1, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@332254c=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...