./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.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_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/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 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 0.1.23-1dbac8b [2018-11-10 13:14:37,212 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-10 13:14:37,214 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-10 13:14:37,221 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-10 13:14:37,221 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-10 13:14:37,222 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-10 13:14:37,222 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-10 13:14:37,223 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-10 13:14:37,225 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-10 13:14:37,225 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-10 13:14:37,226 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-10 13:14:37,226 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-10 13:14:37,227 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-10 13:14:37,227 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-10 13:14:37,228 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-10 13:14:37,228 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-10 13:14:37,229 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-10 13:14:37,230 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-10 13:14:37,231 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-10 13:14:37,232 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-10 13:14:37,233 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-10 13:14:37,233 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-10 13:14:37,235 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-10 13:14:37,235 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-10 13:14:37,235 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-10 13:14:37,236 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-10 13:14:37,237 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-10 13:14:37,237 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-10 13:14:37,238 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-10 13:14:37,238 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-10 13:14:37,239 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-10 13:14:37,239 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-10 13:14:37,239 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-10 13:14:37,239 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-10 13:14:37,240 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-10 13:14:37,241 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-10 13:14:37,241 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2018-11-10 13:14:37,248 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-10 13:14:37,248 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-10 13:14:37,249 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-10 13:14:37,249 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-10 13:14:37,249 INFO L133 SettingsManager]: * Use SBE=true [2018-11-10 13:14:37,250 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-10 13:14:37,250 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-10 13:14:37,250 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-10 13:14:37,251 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-10 13:14:37,252 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-10 13:14:37,252 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-10 13:14:37,252 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-10 13:14:37,252 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-10 13:14:37,252 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-10 13:14:37,252 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-10 13:14:37,253 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-10 13:14:37,253 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_8c501e9c-f362-42f2-ba5e-c8462a4886a7/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 -> f21f1881350863de740f7b7321104b53617dd8ce [2018-11-10 13:14:37,276 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-10 13:14:37,285 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-10 13:14:37,288 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-10 13:14:37,289 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-10 13:14:37,289 INFO L276 PluginConnector]: CDTParser initialized [2018-11-10 13:14:37,290 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.c [2018-11-10 13:14:37,328 INFO L218 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/data/45f24ef1d/52acaa690a2f4703b9561c2e8670b0e3/FLAGa5f4e7b1e [2018-11-10 13:14:37,721 INFO L298 CDTParser]: Found 1 translation units. [2018-11-10 13:14:37,722 INFO L158 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/sv-benchmarks/c/termination-crafted/RecursiveNonterminating_false-termination_true-valid-memsafety.c [2018-11-10 13:14:37,726 INFO L346 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/data/45f24ef1d/52acaa690a2f4703b9561c2e8670b0e3/FLAGa5f4e7b1e [2018-11-10 13:14:37,734 INFO L354 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/data/45f24ef1d/52acaa690a2f4703b9561c2e8670b0e3 [2018-11-10 13:14:37,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-10 13:14:37,737 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-10 13:14:37,738 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-10 13:14:37,738 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-10 13:14:37,741 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-10 13:14:37,741 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@12305cee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37, skipping insertion in model container [2018-11-10 13:14:37,744 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,749 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-10 13:14:37,759 INFO L174 MainTranslator]: Built tables and reachable declarations [2018-11-10 13:14:37,845 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:14:37,847 INFO L189 MainTranslator]: Completed pre-run [2018-11-10 13:14:37,856 INFO L202 PostProcessor]: Analyzing one entry point: main [2018-11-10 13:14:37,864 INFO L193 MainTranslator]: Completed translation [2018-11-10 13:14:37,864 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37 WrapperNode [2018-11-10 13:14:37,864 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-10 13:14:37,864 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-10 13:14:37,865 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-10 13:14:37,865 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-10 13:14:37,872 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,876 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-10 13:14:37,889 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-10 13:14:37,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-10 13:14:37,890 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-10 13:14:37,897 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,897 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,898 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,898 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,900 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,901 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... [2018-11-10 13:14:37,902 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-10 13:14:37,902 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-10 13:14:37,902 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-10 13:14:37,902 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-10 13:14:37,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/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 [2018-11-10 13:14:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2018-11-10 13:14:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2018-11-10 13:14:37,984 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-10 13:14:37,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-10 13:14:38,076 INFO L341 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-10 13:14:38,076 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:38 BoogieIcfgContainer [2018-11-10 13:14:38,076 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-10 13:14:38,077 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-10 13:14:38,077 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-10 13:14:38,080 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-10 13:14:38,080 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 13:14:38,080 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 10.11 01:14:37" (1/3) ... [2018-11-10 13:14:38,081 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@673c9c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 01:14:38, skipping insertion in model container [2018-11-10 13:14:38,081 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 13:14:38,082 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 01:14:37" (2/3) ... [2018-11-10 13:14:38,082 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@673c9c41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 10.11 01:14:38, skipping insertion in model container [2018-11-10 13:14:38,082 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-10 13:14:38,082 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:38" (3/3) ... [2018-11-10 13:14:38,083 INFO L375 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating_false-termination_true-valid-memsafety.c [2018-11-10 13:14:38,120 INFO L135 ementStrategyFactory]: Using default assertion order modulation [2018-11-10 13:14:38,121 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-10 13:14:38,121 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-10 13:14:38,121 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-10 13:14:38,121 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-10 13:14:38,121 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-10 13:14:38,121 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-10 13:14:38,121 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-10 13:14:38,121 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-10 13:14:38,131 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-10 13:14:38,149 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 13:14:38,150 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 13:14:38,150 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 13:14:38,156 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 13:14:38,156 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 13:14:38,156 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-10 13:14:38,156 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 13 states. [2018-11-10 13:14:38,157 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-10 13:14:38,158 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-10 13:14:38,158 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-10 13:14:38,158 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-10 13:14:38,158 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-10 13:14:38,163 INFO L793 eck$LassoCheckResult]: Stem: 10#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 5#L18true assume !!(main_~n~0 <= 2147483646); 7#L19true call rec(main_~n~0, main_~n~0 + 1);< 3#recENTRYtrue [2018-11-10 13:14:38,163 INFO L795 eck$LassoCheckResult]: Loop: 3#recENTRYtrue ~x := #in~x;~y := #in~y; 13#L11true assume ~x <= 23 && ~x >= -42; 4#L12true call rec(2 * ~y - 2, ~x + 1);< 3#recENTRYtrue [2018-11-10 13:14:38,167 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:38,167 INFO L82 PathProgramCache]: Analyzing trace with hash 1202731, now seen corresponding path program 1 times [2018-11-10 13:14:38,169 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:38,169 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:38,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,199 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:38,199 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,231 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:38,231 INFO L82 PathProgramCache]: Analyzing trace with hash 29906, now seen corresponding path program 1 times [2018-11-10 13:14:38,232 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:38,232 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:38,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,233 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:38,233 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,243 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-10 13:14:38,244 INFO L82 PathProgramCache]: Analyzing trace with hash 1470820968, now seen corresponding path program 1 times [2018-11-10 13:14:38,244 INFO L225 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-10 13:14:38,244 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-10 13:14:38,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,245 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-10 13:14:38,245 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-10 13:14:38,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-10 13:14:38,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 10.11 01:14:38 BoogieIcfgContainer [2018-11-10 13:14:38,447 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-10 13:14:38,448 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-10 13:14:38,448 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-10 13:14:38,448 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-10 13:14:38,448 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.11 01:14:38" (3/4) ... [2018-11-10 13:14:38,451 INFO L141 WitnessPrinter]: Generating witness for non-termination counterexample [2018-11-10 13:14:38,474 INFO L145 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/working_dir_8c501e9c-f362-42f2-ba5e-c8462a4886a7/bin-2019/uautomizer/witness.graphml [2018-11-10 13:14:38,475 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-10 13:14:38,475 INFO L168 Benchmark]: Toolchain (without parser) took 738.59 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 960.2 MB in the beginning and 1.1 GB in the end (delta: -138.6 MB). Peak memory consumption was 6.6 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,476 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:14:38,476 INFO L168 Benchmark]: CACSL2BoogieTranslator took 126.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,477 INFO L168 Benchmark]: Boogie Procedure Inliner took 24.88 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-10 13:14:38,477 INFO L168 Benchmark]: Boogie Preprocessor took 12.53 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 941.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,477 INFO L168 Benchmark]: RCFGBuilder took 174.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,478 INFO L168 Benchmark]: BuchiAutomizer took 370.65 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,478 INFO L168 Benchmark]: Witness Printer took 27.00 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-10 13:14:38,481 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 126.61 ms. Allocated memory is still 1.0 GB. Free memory was 960.2 MB in the beginning and 949.5 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 24.88 ms. Allocated memory is still 1.0 GB. Free memory is still 949.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 12.53 ms. Allocated memory is still 1.0 GB. Free memory was 949.5 MB in the beginning and 941.4 MB in the end (delta: 8.1 MB). Peak memory consumption was 8.1 MB. Max. memory is 11.5 GB. * RCFGBuilder took 174.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.2 MB). Free memory was 941.4 MB in the beginning and 1.1 GB in the end (delta: -193.0 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 370.65 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: 32.2 MB). Peak memory consumption was 32.2 MB. Max. memory is 11.5 GB. * Witness Printer took 27.00 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 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@5080d0ac=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...