./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 2e94e6aa Calling Ultimate with: java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerTermination.xml -i /storage/repos/svcomp/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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 0.1.24-2e94e6a [2019-01-01 21:33:19,432 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:33:19,434 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:33:19,447 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:33:19,448 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:33:19,449 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:33:19,451 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:33:19,453 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:33:19,455 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:33:19,456 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:33:19,457 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:33:19,458 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:33:19,459 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:33:19,460 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:33:19,462 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:33:19,463 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:33:19,464 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:33:19,466 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:33:19,469 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:33:19,471 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:33:19,472 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:33:19,474 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:33:19,477 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:33:19,478 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:33:19,478 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:33:19,480 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:33:19,481 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:33:19,482 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:33:19,483 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:33:19,484 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:33:19,485 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:33:19,486 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:33:19,486 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:33:19,486 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:33:19,487 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:33:19,489 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:33:19,490 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:33:19,508 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:33:19,508 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:33:19,511 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:33:19,512 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:33:19,512 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:33:19,512 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:33:19,512 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:33:19,512 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:33:19,512 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:33:19,514 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:33:19,514 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:33:19,514 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:33:19,517 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:33:19,517 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:33:19,517 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:33:19,517 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:33:19,519 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:33:19,519 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:33:19,520 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:33:19,520 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:33:19,520 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:33:19,520 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:33:19,520 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:33:19,522 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:33:19,522 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:33:19,522 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:33:19,522 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:33:19,523 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:33:19,525 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:33:19,525 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 75dd2ce3f6219a56f38a72471186bda1e7610d5c [2019-01-01 21:33:19,603 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:33:19,625 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:33:19,631 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:33:19,633 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:33:19,633 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:33:19,634 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2019-01-01 21:33:19,704 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff35a56b/1f30c9eceea443609f6eb63c0d8e747f/FLAGe862604f9 [2019-01-01 21:33:20,192 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:33:20,193 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2019-01-01 21:33:20,202 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff35a56b/1f30c9eceea443609f6eb63c0d8e747f/FLAGe862604f9 [2019-01-01 21:33:20,516 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bff35a56b/1f30c9eceea443609f6eb63c0d8e747f [2019-01-01 21:33:20,521 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:33:20,524 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:33:20,525 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:33:20,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:33:20,531 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:33:20,532 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,536 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@423bec4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20, skipping insertion in model container [2019-01-01 21:33:20,537 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:33:20,572 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:33:20,796 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:33:20,800 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:33:20,817 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:33:20,831 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:33:20,832 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20 WrapperNode [2019-01-01 21:33:20,832 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:33:20,833 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:33:20,833 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:33:20,833 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:33:20,844 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,850 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,877 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:33:20,877 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:33:20,877 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:33:20,878 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:33:20,888 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,888 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,889 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,889 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,891 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,896 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,897 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... [2019-01-01 21:33:20,898 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:33:20,899 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:33:20,899 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:33:20,899 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:33:20,900 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-01-01 21:33:21,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:33:21,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:33:21,228 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:33:21,228 INFO L280 CfgBuilder]: Removed 5 assue(true) statements. [2019-01-01 21:33:21,229 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:21 BoogieIcfgContainer [2019-01-01 21:33:21,229 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:33:21,230 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:33:21,230 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:33:21,234 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:33:21,235 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:21,235 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:33:20" (1/3) ... [2019-01-01 21:33:21,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34442c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:33:21, skipping insertion in model container [2019-01-01 21:33:21,237 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:21,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:33:20" (2/3) ... [2019-01-01 21:33:21,237 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@34442c63 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:33:21, skipping insertion in model container [2019-01-01 21:33:21,237 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:33:21,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:21" (3/3) ... [2019-01-01 21:33:21,240 INFO L375 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction_false-termination_true-no-overflow.c [2019-01-01 21:33:21,308 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:33:21,309 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:33:21,310 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:33:21,310 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:33:21,310 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:33:21,310 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:33:21,310 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:33:21,310 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:33:21,311 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:33:21,329 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-01 21:33:21,354 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:21,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:33:21,355 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:33:21,362 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 21:33:21,362 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:33:21,362 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:33:21,362 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-01-01 21:33:21,364 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:21,364 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:33:21,364 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:33:21,365 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 21:33:21,365 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:33:21,375 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L18true assume !(main_~k~0 >= 0);main_~i~0 := -1; 6#L23-1true [2019-01-01 21:33:21,376 INFO L796 eck$LassoCheckResult]: Loop: 6#L23-1true assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L23-1true [2019-01-01 21:33:21,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,384 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-01-01 21:33:21,387 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,388 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,451 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:21,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,506 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-01-01 21:33:21,506 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,506 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,509 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:21,509 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,519 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2019-01-01 21:33:21,519 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,519 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,522 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:21,522 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-01-01 21:33:21,623 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-01-01 21:33:21,627 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-01-01 21:33:21,627 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-01-01 21:33:21,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-01-01 21:33:21,820 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-01-01 21:33:21,822 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-01-01 21:33:21,862 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-01-01 21:33:21,863 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-01-01 21:33:21,866 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-01-01 21:33:21,869 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-01-01 21:33:21,870 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:21,877 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 3 states and 3 transitions. [2019-01-01 21:33:21,881 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-01-01 21:33:21,882 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-01-01 21:33:21,883 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2019-01-01 21:33:21,883 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-01-01 21:33:21,883 INFO L705 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-01-01 21:33:21,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2019-01-01 21:33:21,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2019-01-01 21:33:21,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-01-01 21:33:21,914 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-01-01 21:33:21,915 INFO L728 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-01-01 21:33:21,916 INFO L608 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-01-01 21:33:21,916 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2019-01-01 21:33:21,916 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2019-01-01 21:33:21,917 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-01-01 21:33:21,917 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:33:21,917 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:33:21,917 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-01-01 21:33:21,917 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-01-01 21:33:21,918 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 27#L18 assume main_~k~0 >= 0; 28#L23-1 [2019-01-01 21:33:21,918 INFO L796 eck$LassoCheckResult]: Loop: 28#L23-1 assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 28#L23-1 [2019-01-01 21:33:21,918 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,918 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-01-01 21:33:21,918 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,919 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,920 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,921 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:21,921 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,928 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,928 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-01-01 21:33:21,928 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,928 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,930 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,930 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:33:21,934 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,944 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:33:21,947 INFO L82 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2019-01-01 21:33:21,947 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:33:21,947 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:33:21,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,949 INFO L101 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2019-01-01 21:33:21,949 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:33:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:21,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:33:22,093 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:33:22 BoogieIcfgContainer [2019-01-01 21:33:22,093 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:33:22,093 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:33:22,093 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:33:22,094 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:33:22,095 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:33:21" (3/4) ... [2019-01-01 21:33:22,100 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 21:33:22,147 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:33:22,147 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:33:22,148 INFO L168 Benchmark]: Toolchain (without parser) took 1625.78 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 946.0 MB in the beginning and 1.1 GB in the end (delta: -125.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:33:22,149 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 1.0 GB. Free memory is still 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:33:22,150 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.15 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:33:22,151 INFO L168 Benchmark]: Boogie Procedure Inliner took 44.20 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:33:22,151 INFO L168 Benchmark]: Boogie Preprocessor took 21.31 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:33:22,152 INFO L168 Benchmark]: RCFGBuilder took 330.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2019-01-01 21:33:22,153 INFO L168 Benchmark]: BuchiAutomizer took 862.95 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: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. [2019-01-01 21:33:22,154 INFO L168 Benchmark]: Witness Printer took 53.75 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:33:22,158 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 972.8 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 307.15 ms. Allocated memory is still 1.0 GB. Free memory was 946.0 MB in the beginning and 935.3 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 44.20 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.31 ms. Allocated memory is still 1.0 GB. Free memory is still 935.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 330.39 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 124.3 MB). Free memory was 935.3 MB in the beginning and 1.1 GB in the end (delta: -170.8 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 862.95 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: 34.6 MB). Peak memory consumption was 34.6 MB. Max. memory is 11.5 GB. * Witness Printer took 53.75 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 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.7s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.5s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 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 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 3 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@22ad6845=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@14ce771f=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@dde409b=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...