./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_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_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c -s /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/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 75dd2ce3f6219a56f38a72471186bda1e7610d5c .................................................................................................................................................................................................................................................................................................................................. 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 06:07:01,922 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-10-27 06:07:01,924 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-10-27 06:07:01,934 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-10-27 06:07:01,935 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-10-27 06:07:01,935 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-10-27 06:07:01,936 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-10-27 06:07:01,937 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-10-27 06:07:01,938 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-10-27 06:07:01,939 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-10-27 06:07:01,940 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-10-27 06:07:01,940 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-10-27 06:07:01,943 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-10-27 06:07:01,944 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-10-27 06:07:01,945 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-10-27 06:07:01,945 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-10-27 06:07:01,946 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-10-27 06:07:01,947 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-10-27 06:07:01,956 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-10-27 06:07:01,957 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-10-27 06:07:01,958 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-10-27 06:07:01,959 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-10-27 06:07:01,963 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-10-27 06:07:01,964 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-10-27 06:07:01,964 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-10-27 06:07:01,965 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-10-27 06:07:01,965 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-10-27 06:07:01,966 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-10-27 06:07:01,969 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-10-27 06:07:01,970 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-10-27 06:07:01,971 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-10-27 06:07:01,972 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-10-27 06:07:01,972 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-10-27 06:07:01,972 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-10-27 06:07:01,973 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-10-27 06:07:01,973 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-10-27 06:07:01,974 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-10-27 06:07:01,990 INFO L110 SettingsManager]: Loading preferences was successful [2018-10-27 06:07:01,992 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-10-27 06:07:01,993 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-10-27 06:07:01,994 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-10-27 06:07:01,994 INFO L133 SettingsManager]: * Use SBE=true [2018-10-27 06:07:01,995 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-10-27 06:07:01,995 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-10-27 06:07:01,996 INFO L133 SettingsManager]: * Use old map elimination=false [2018-10-27 06:07:01,996 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-10-27 06:07:01,996 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-10-27 06:07:01,996 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-10-27 06:07:01,996 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-10-27 06:07:01,997 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-10-27 06:07:01,998 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-10-27 06:07:01,998 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-10-27 06:07:01,998 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-10-27 06:07:01,998 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-10-27 06:07:01,998 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-10-27 06:07:01,998 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-10-27 06:07:01,998 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-10-27 06:07:01,999 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-10-27 06:07:01,999 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_e39113fd-f691-4d40-9a42-fff24366bf3d/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 -> 75dd2ce3f6219a56f38a72471186bda1e7610d5c [2018-10-27 06:07:02,028 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-10-27 06:07:02,038 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-10-27 06:07:02,041 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-10-27 06:07:02,042 INFO L271 PluginConnector]: Initializing CDTParser... [2018-10-27 06:07:02,043 INFO L276 PluginConnector]: CDTParser initialized [2018-10-27 06:07:02,043 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2018-10-27 06:07:02,088 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/data/a66032bca/856f388c6ec04b89b3e1670d79cb6fd8/FLAGed14e3850 [2018-10-27 06:07:02,493 INFO L298 CDTParser]: Found 1 translation units. [2018-10-27 06:07:02,493 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2018-10-27 06:07:02,498 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/data/a66032bca/856f388c6ec04b89b3e1670d79cb6fd8/FLAGed14e3850 [2018-10-27 06:07:02,511 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/data/a66032bca/856f388c6ec04b89b3e1670d79cb6fd8 [2018-10-27 06:07:02,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-10-27 06:07:02,516 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-10-27 06:07:02,517 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-10-27 06:07:02,517 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-10-27 06:07:02,520 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-10-27 06:07:02,521 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,524 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@124d7993 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02, skipping insertion in model container [2018-10-27 06:07:02,524 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,543 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-10-27 06:07:02,561 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-10-27 06:07:02,694 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:07:02,697 INFO L189 MainTranslator]: Completed pre-run [2018-10-27 06:07:02,709 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-10-27 06:07:02,719 INFO L193 MainTranslator]: Completed translation [2018-10-27 06:07:02,719 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02 WrapperNode [2018-10-27 06:07:02,719 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-10-27 06:07:02,720 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-10-27 06:07:02,720 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-10-27 06:07:02,721 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-10-27 06:07:02,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,734 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,749 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-10-27 06:07:02,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-10-27 06:07:02,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-10-27 06:07:02,750 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-10-27 06:07:02,759 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,759 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,759 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,759 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,761 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,765 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,766 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... [2018-10-27 06:07:02,767 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-10-27 06:07:02,767 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-10-27 06:07:02,767 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-10-27 06:07:02,767 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-10-27 06:07:02,768 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/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 06:07:02,908 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-10-27 06:07:02,908 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-10-27 06:07:03,050 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-10-27 06:07:03,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:03 BoogieIcfgContainer [2018-10-27 06:07:03,051 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-10-27 06:07:03,051 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-10-27 06:07:03,051 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-10-27 06:07:03,055 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-10-27 06:07:03,056 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:07:03,056 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 27.10 06:07:02" (1/3) ... [2018-10-27 06:07:03,057 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d9c7498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:07:03, skipping insertion in model container [2018-10-27 06:07:03,058 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:07:03,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 06:07:02" (2/3) ... [2018-10-27 06:07:03,058 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d9c7498 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 27.10 06:07:03, skipping insertion in model container [2018-10-27 06:07:03,058 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-10-27 06:07:03,058 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:03" (3/3) ... [2018-10-27 06:07:03,060 INFO L375 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2018-10-27 06:07:03,115 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-10-27 06:07:03,116 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-10-27 06:07:03,116 INFO L375 BuchiCegarLoop]: Hoare is false [2018-10-27 06:07:03,116 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-10-27 06:07:03,116 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-10-27 06:07:03,116 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-10-27 06:07:03,117 INFO L379 BuchiCegarLoop]: Difference is false [2018-10-27 06:07:03,117 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-10-27 06:07:03,117 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-10-27 06:07:03,130 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:07:03,148 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:07:03,148 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:07:03,149 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:07:03,155 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:07:03,155 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:07:03,155 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-10-27 06:07:03,155 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2018-10-27 06:07:03,156 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:07:03,156 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:07:03,156 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:07:03,157 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:07:03,157 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:07:03,168 INFO L793 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 3#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 9#L18true assume !(main_~k~0 >= 0);main_~i~0 := -1; 4#L23-2true [2018-10-27 06:07:03,168 INFO L795 eck$LassoCheckResult]: Loop: 4#L23-2true assume true; 7#L23true assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L23-2true [2018-10-27 06:07:03,174 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,176 INFO L82 PathProgramCache]: Analyzing trace with hash 29860, now seen corresponding path program 1 times [2018-10-27 06:07:03,178 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,178 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,231 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:03,231 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,269 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,269 INFO L82 PathProgramCache]: Analyzing trace with hash 1319, now seen corresponding path program 1 times [2018-10-27 06:07:03,269 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,270 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,271 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:03,271 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,283 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,284 INFO L82 PathProgramCache]: Analyzing trace with hash 28695818, now seen corresponding path program 1 times [2018-10-27 06:07:03,284 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,284 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,285 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:03,285 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-10-27 06:07:03,376 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-10-27 06:07:03,378 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-10-27 06:07:03,378 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-10-27 06:07:03,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-10-27 06:07:03,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-10-27 06:07:03,478 INFO L87 Difference]: Start difference. First operand 9 states. Second operand 3 states. [2018-10-27 06:07:03,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-10-27 06:07:03,517 INFO L93 Difference]: Finished difference Result 11 states and 12 transitions. [2018-10-27 06:07:03,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-10-27 06:07:03,519 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 11 states and 12 transitions. [2018-10-27 06:07:03,520 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:07:03,523 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 11 states to 5 states and 5 transitions. [2018-10-27 06:07:03,524 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2018-10-27 06:07:03,524 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2018-10-27 06:07:03,524 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 5 transitions. [2018-10-27 06:07:03,524 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-10-27 06:07:03,525 INFO L705 BuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-27 06:07:03,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5 states and 5 transitions. [2018-10-27 06:07:03,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5 to 5. [2018-10-27 06:07:03,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2018-10-27 06:07:03,541 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 5 transitions. [2018-10-27 06:07:03,542 INFO L728 BuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-27 06:07:03,542 INFO L608 BuchiCegarLoop]: Abstraction has 5 states and 5 transitions. [2018-10-27 06:07:03,542 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-10-27 06:07:03,543 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 5 transitions. [2018-10-27 06:07:03,543 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2018-10-27 06:07:03,543 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-10-27 06:07:03,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-10-27 06:07:03,543 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-10-27 06:07:03,543 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2018-10-27 06:07:03,544 INFO L793 eck$LassoCheckResult]: Stem: 35#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 31#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 32#L18 assume main_~k~0 >= 0; 33#L23-2 [2018-10-27 06:07:03,544 INFO L795 eck$LassoCheckResult]: Loop: 33#L23-2 assume true; 34#L23 assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 33#L23-2 [2018-10-27 06:07:03,544 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,544 INFO L82 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2018-10-27 06:07:03,544 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,544 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,546 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:03,546 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,550 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,550 INFO L82 PathProgramCache]: Analyzing trace with hash 1319, now seen corresponding path program 2 times [2018-10-27 06:07:03,550 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,550 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,551 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-10-27 06:07:03,551 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,555 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-10-27 06:07:03,555 INFO L82 PathProgramCache]: Analyzing trace with hash 28693896, now seen corresponding path program 1 times [2018-10-27 06:07:03,555 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-10-27 06:07:03,555 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-10-27 06:07:03,557 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,557 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2018-10-27 06:07:03,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-10-27 06:07:03,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-10-27 06:07:03,611 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 27.10 06:07:03 BoogieIcfgContainer [2018-10-27 06:07:03,611 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-10-27 06:07:03,612 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-10-27 06:07:03,612 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-10-27 06:07:03,612 INFO L276 PluginConnector]: Witness Printer initialized [2018-10-27 06:07:03,612 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 06:07:03" (3/4) ... [2018-10-27 06:07:03,615 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-10-27 06:07:03,647 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_e39113fd-f691-4d40-9a42-fff24366bf3d/bin-2019/uautomizer/witness.graphml [2018-10-27 06:07:03,647 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-10-27 06:07:03,647 INFO L168 Benchmark]: Toolchain (without parser) took 1132.64 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 959.8 MB in the beginning and 1.1 GB in the end (delta: -157.5 MB). Peak memory consumption was 3.9 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:03,649 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:03,649 INFO L168 Benchmark]: CACSL2BoogieTranslator took 203.18 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:03,650 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.62 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-10-27 06:07:03,650 INFO L168 Benchmark]: Boogie Preprocessor took 16.92 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:03,651 INFO L168 Benchmark]: RCFGBuilder took 283.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -204.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:03,651 INFO L168 Benchmark]: BuchiAutomizer took 560.18 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. [2018-10-27 06:07:03,652 INFO L168 Benchmark]: Witness Printer took 35.30 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. [2018-10-27 06:07:03,655 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 985.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 203.18 ms. Allocated memory is still 1.0 GB. Free memory was 959.8 MB in the beginning and 949.0 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 29.62 ms. Allocated memory is still 1.0 GB. Free memory is still 949.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 16.92 ms. Allocated memory is still 1.0 GB. Free memory was 949.0 MB in the beginning and 946.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 283.73 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 161.5 MB). Free memory was 946.4 MB in the beginning and 1.2 GB in the end (delta: -204.3 MB). Peak memory consumption was 21.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 560.18 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: 33.4 MB). Peak memory consumption was 33.4 MB. Max. memory is 11.5 GB. * Witness Printer took 35.30 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 Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.5s and 2 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 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 5 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 11 SDtfs, 0 SDslu, 5 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 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: 23]: 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 {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@3bbab7c2=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@69a7ffd1=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@7faa7055=0, i=0, k=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...