./Ultimate.py --spec /storage/repos/svcomp/c/properties/termination.prp --file /storage/repos/svcomp/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.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/RecursiveNonterminating_false-termination_true-valid-memsafety.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 f21f1881350863de740f7b7321104b53617dd8ce ................................................................................................................................................................................................................................................................. 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 21:31:38,143 INFO L170 SettingsManager]: Resetting all preferences to default values... [2019-01-01 21:31:38,145 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2019-01-01 21:31:38,158 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-01-01 21:31:38,159 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-01-01 21:31:38,160 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-01-01 21:31:38,164 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-01-01 21:31:38,167 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2019-01-01 21:31:38,169 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-01-01 21:31:38,172 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-01-01 21:31:38,175 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-01-01 21:31:38,175 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-01-01 21:31:38,176 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-01-01 21:31:38,178 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-01-01 21:31:38,180 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-01-01 21:31:38,181 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-01-01 21:31:38,182 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-01-01 21:31:38,184 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-01-01 21:31:38,186 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2019-01-01 21:31:38,188 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-01-01 21:31:38,189 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-01-01 21:31:38,190 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-01-01 21:31:38,193 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-01-01 21:31:38,193 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-01-01 21:31:38,194 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-01-01 21:31:38,195 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-01-01 21:31:38,196 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-01-01 21:31:38,197 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-01-01 21:31:38,198 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2019-01-01 21:31:38,199 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-01-01 21:31:38,199 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2019-01-01 21:31:38,202 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-01-01 21:31:38,202 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-01-01 21:31:38,202 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2019-01-01 21:31:38,203 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2019-01-01 21:31:38,204 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2019-01-01 21:31:38,204 INFO L98 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-01-01 21:31:38,239 INFO L110 SettingsManager]: Loading preferences was successful [2019-01-01 21:31:38,240 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2019-01-01 21:31:38,242 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-01-01 21:31:38,242 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2019-01-01 21:31:38,242 INFO L133 SettingsManager]: * Use SBE=true [2019-01-01 21:31:38,242 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-01-01 21:31:38,243 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-01-01 21:31:38,244 INFO L133 SettingsManager]: * Use old map elimination=false [2019-01-01 21:31:38,244 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2019-01-01 21:31:38,244 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2019-01-01 21:31:38,244 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-01-01 21:31:38,244 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-01-01 21:31:38,245 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-01-01 21:31:38,245 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2019-01-01 21:31:38,245 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2019-01-01 21:31:38,245 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-01-01 21:31:38,245 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-01-01 21:31:38,246 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-01-01 21:31:38,246 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2019-01-01 21:31:38,246 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-01-01 21:31:38,246 INFO L133 SettingsManager]: * Use constant arrays=true [2019-01-01 21:31:38,246 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-01-01 21:31:38,246 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-01-01 21:31:38,248 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-01-01 21:31:38,248 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-01-01 21:31:38,249 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-01-01 21:31:38,249 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2019-01-01 21:31:38,249 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-01-01 21:31:38,250 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-01-01 21:31:38,250 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 -> f21f1881350863de740f7b7321104b53617dd8ce [2019-01-01 21:31:38,311 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-01-01 21:31:38,329 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-01-01 21:31:38,339 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-01-01 21:31:38,341 INFO L271 PluginConnector]: Initializing CDTParser... [2019-01-01 21:31:38,341 INFO L276 PluginConnector]: CDTParser initialized [2019-01-01 21:31:38,342 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/svcomp/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.c [2019-01-01 21:31:38,401 INFO L221 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e9597b8/59ca19a2d6ff465fa562326176bf42d1/FLAGd1020036f [2019-01-01 21:31:38,812 INFO L307 CDTParser]: Found 1 translation units. [2019-01-01 21:31:38,813 INFO L161 CDTParser]: Scanning /storage/repos/svcomp/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.c [2019-01-01 21:31:38,820 INFO L355 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e9597b8/59ca19a2d6ff465fa562326176bf42d1/FLAGd1020036f [2019-01-01 21:31:39,166 INFO L363 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/e6e9597b8/59ca19a2d6ff465fa562326176bf42d1 [2019-01-01 21:31:39,170 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-01-01 21:31:39,171 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-01-01 21:31:39,172 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-01-01 21:31:39,172 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-01-01 21:31:39,176 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2019-01-01 21:31:39,177 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,180 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ea98bd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39, skipping insertion in model container [2019-01-01 21:31:39,180 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,189 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-01-01 21:31:39,205 INFO L176 MainTranslator]: Built tables and reachable declarations [2019-01-01 21:31:39,444 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:31:39,450 INFO L191 MainTranslator]: Completed pre-run [2019-01-01 21:31:39,472 INFO L204 PostProcessor]: Analyzing one entry point: main [2019-01-01 21:31:39,490 INFO L195 MainTranslator]: Completed translation [2019-01-01 21:31:39,491 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39 WrapperNode [2019-01-01 21:31:39,491 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-01-01 21:31:39,492 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-01-01 21:31:39,492 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-01-01 21:31:39,492 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2019-01-01 21:31:39,504 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,510 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,535 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-01-01 21:31:39,535 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-01-01 21:31:39,535 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-01-01 21:31:39,536 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2019-01-01 21:31:39,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,548 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,548 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,549 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,556 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (1/1) ... [2019-01-01 21:31:39,558 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-01-01 21:31:39,558 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-01-01 21:31:39,559 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-01-01 21:31:39,559 INFO L276 PluginConnector]: RCFGBuilder initialized [2019-01-01 21:31:39,560 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (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 21:31:39,696 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-01-01 21:31:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-01-01 21:31:39,697 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-01-01 21:31:39,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-01-01 21:31:39,873 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-01-01 21:31:39,873 INFO L280 CfgBuilder]: Removed 4 assue(true) statements. [2019-01-01 21:31:39,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:31:39 BoogieIcfgContainer [2019-01-01 21:31:39,874 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-01-01 21:31:39,876 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-01-01 21:31:39,877 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-01-01 21:31:39,880 INFO L276 PluginConnector]: BuchiAutomizer initialized [2019-01-01 21:31:39,881 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:31:39,881 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.01 09:31:39" (1/3) ... [2019-01-01 21:31:39,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e154f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:31:39, skipping insertion in model container [2019-01-01 21:31:39,882 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:31:39,882 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.01 09:31:39" (2/3) ... [2019-01-01 21:31:39,882 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7e154f91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.01 09:31:39, skipping insertion in model container [2019-01-01 21:31:39,883 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-01-01 21:31:39,883 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:31:39" (3/3) ... [2019-01-01 21:31:39,884 INFO L375 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating_false-termination_true-valid-memsafety.c [2019-01-01 21:31:39,944 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2019-01-01 21:31:39,945 INFO L374 BuchiCegarLoop]: Interprodecural is true [2019-01-01 21:31:39,945 INFO L375 BuchiCegarLoop]: Hoare is false [2019-01-01 21:31:39,945 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-01-01 21:31:39,945 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-01-01 21:31:39,945 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-01-01 21:31:39,945 INFO L379 BuchiCegarLoop]: Difference is false [2019-01-01 21:31:39,946 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-01-01 21:31:39,946 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-01-01 21:31:39,963 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-01-01 21:31:39,990 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:31:39,990 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:31:39,990 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:31:39,999 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-01 21:31:39,999 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:31:39,999 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2019-01-01 21:31:39,999 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-01-01 21:31:40,001 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-01-01 21:31:40,001 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-01-01 21:31:40,001 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-01-01 21:31:40,002 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-01-01 21:31:40,002 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-01-01 21:31:40,011 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L18true assume !!(main_~n~0 <= 2147483646); 11#L19true call rec(main_~n~0, 1 + main_~n~0);< 3#recENTRYtrue [2019-01-01 21:31:40,012 INFO L796 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~x := #in~x;~y := #in~y; 10#L11true assume ~x <= 23 && ~x >= -42; 5#L12true call rec(2 * ~y - 2, 1 + ~x);< 3#recENTRYtrue [2019-01-01 21:31:40,019 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:31:40,019 INFO L82 PathProgramCache]: Analyzing trace with hash 39889, now seen corresponding path program 1 times [2019-01-01 21:31:40,022 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:31:40,023 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:31:40,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:31:40,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,141 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:31:40,141 INFO L82 PathProgramCache]: Analyzing trace with hash 29905, now seen corresponding path program 1 times [2019-01-01 21:31:40,141 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:31:40,142 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:31:40,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:31:40,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-01-01 21:31:40,160 INFO L82 PathProgramCache]: Analyzing trace with hash 1188333313, now seen corresponding path program 1 times [2019-01-01 21:31:40,160 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-01-01 21:31:40,160 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-01-01 21:31:40,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,162 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-01-01 21:31:40,162 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-01-01 21:31:40,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-01-01 21:31:40,391 WARN L181 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 23 [2019-01-01 21:31:40,694 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.01 09:31:40 BoogieIcfgContainer [2019-01-01 21:31:40,694 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-01-01 21:31:40,695 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-01-01 21:31:40,695 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-01-01 21:31:40,695 INFO L276 PluginConnector]: Witness Printer initialized [2019-01-01 21:31:40,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.01 09:31:39" (3/4) ... [2019-01-01 21:31:40,698 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2019-01-01 21:31:40,738 INFO L145 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-01-01 21:31:40,738 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-01-01 21:31:40,739 INFO L168 Benchmark]: Toolchain (without parser) took 1568.67 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 947.3 MB in the beginning and 1.1 GB in the end (delta: -145.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:31:40,740 INFO L168 Benchmark]: CDTParser took 0.18 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 21:31:40,741 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.55 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2019-01-01 21:31:40,742 INFO L168 Benchmark]: Boogie Procedure Inliner took 43.02 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:31:40,742 INFO L168 Benchmark]: Boogie Preprocessor took 22.86 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-01-01 21:31:40,744 INFO L168 Benchmark]: RCFGBuilder took 315.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. [2019-01-01 21:31:40,745 INFO L168 Benchmark]: BuchiAutomizer took 817.84 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: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. [2019-01-01 21:31:40,745 INFO L168 Benchmark]: Witness Printer took 43.71 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 21:31:40,751 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 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 319.55 ms. Allocated memory is still 1.0 GB. Free memory was 947.3 MB in the beginning and 936.6 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 43.02 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 22.86 ms. Allocated memory is still 1.0 GB. Free memory is still 936.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 315.31 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 142.6 MB). Free memory was 936.6 MB in the beginning and 1.1 GB in the end (delta: -191.0 MB). Peak memory consumption was 24.6 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 817.84 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: 35.1 MB). Peak memory consumption was 35.1 MB. Max. memory is 11.5 GB. * Witness Printer took 43.71 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 0.7s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.6s. 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: 10]: 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 {x=0, y=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5df17306=0, \result=0, \old(x)=0, NULL=0, n=0, \old(y)=1} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 10]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) [L19] CALL rec(n, n + 1) Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...