./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 678e0110 Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 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 0.1.24-678e011 [2019-11-19 22:54:53,812 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 22:54:53,814 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 22:54:53,830 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 22:54:53,830 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 22:54:53,831 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 22:54:53,833 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 22:54:53,842 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 22:54:53,846 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 22:54:53,850 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 22:54:53,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 22:54:53,853 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 22:54:53,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 22:54:53,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 22:54:53,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 22:54:53,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 22:54:53,859 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 22:54:53,860 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 22:54:53,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 22:54:53,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 22:54:53,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 22:54:53,872 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 22:54:53,875 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 22:54:53,876 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 22:54:53,879 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 22:54:53,879 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 22:54:53,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 22:54:53,881 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 22:54:53,882 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 22:54:53,883 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 22:54:53,883 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 22:54:53,884 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 22:54:53,884 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 22:54:53,885 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 22:54:53,886 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 22:54:53,886 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 22:54:53,887 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 22:54:53,887 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 22:54:53,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 22:54:53,888 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 22:54:53,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 22:54:53,891 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-19 22:54:53,918 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 22:54:53,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 22:54:53,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 22:54:53,930 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 22:54:53,930 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 22:54:53,930 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-19 22:54:53,930 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-19 22:54:53,930 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-19 22:54:53,931 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-19 22:54:53,931 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-19 22:54:53,931 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-19 22:54:53,931 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 22:54:53,932 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 22:54:53,932 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 22:54:53,932 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 22:54:53,932 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-19 22:54:53,932 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-19 22:54:53,933 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-19 22:54:53,933 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-19 22:54:53,933 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-19 22:54:53,934 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 22:54:53,934 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-19 22:54:53,935 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 22:54:53,935 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 22:54:53,935 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-19 22:54:53,936 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 22:54:53,936 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-19 22:54:53,936 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-19 22:54:53,937 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-19 22:54:53,937 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f21f1881350863de740f7b7321104b53617dd8ce [2019-11-19 22:54:54,072 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 22:54:54,081 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 22:54:54,083 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 22:54:54,090 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 22:54:54,091 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 22:54:54,093 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2019-11-19 22:54:54,144 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/data/3449f7b23/40070be4732e481f9d5c22cd9d62273f/FLAG3aa265c5e [2019-11-19 22:54:54,499 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 22:54:54,499 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2019-11-19 22:54:54,505 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/data/3449f7b23/40070be4732e481f9d5c22cd9d62273f/FLAG3aa265c5e [2019-11-19 22:54:54,886 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/data/3449f7b23/40070be4732e481f9d5c22cd9d62273f [2019-11-19 22:54:54,888 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 22:54:54,889 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-19 22:54:54,891 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 22:54:54,891 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 22:54:54,895 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 22:54:54,896 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:54:54" (1/1) ... [2019-11-19 22:54:54,898 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ff2cff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:54, skipping insertion in model container [2019-11-19 22:54:54,899 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 10:54:54" (1/1) ... [2019-11-19 22:54:54,906 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 22:54:54,920 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 22:54:55,104 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:54:55,111 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 22:54:55,127 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 22:54:55,197 INFO L192 MainTranslator]: Completed translation [2019-11-19 22:54:55,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55 WrapperNode [2019-11-19 22:54:55,198 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 22:54:55,199 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-19 22:54:55,199 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-19 22:54:55,199 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-19 22:54:55,208 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,215 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,229 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-19 22:54:55,229 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 22:54:55,229 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 22:54:55,229 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 22:54:55,235 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,235 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,236 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,236 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,237 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,239 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... [2019-11-19 22:54:55,240 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 22:54:55,240 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 22:54:55,240 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 22:54:55,240 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 22:54:55,241 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2019-11-19 22:54:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2019-11-19 22:54:55,297 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2019-11-19 22:54:55,297 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 22:54:55,298 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 22:54:55,443 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 22:54:55,444 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 22:54:55,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:54:55 BoogieIcfgContainer [2019-11-19 22:54:55,445 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 22:54:55,445 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-19 22:54:55,446 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-19 22:54:55,449 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-19 22:54:55,449 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:54:55,450 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 19.11 10:54:54" (1/3) ... [2019-11-19 22:54:55,451 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@383dacdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:54:55, skipping insertion in model container [2019-11-19 22:54:55,451 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:54:55,451 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 10:54:55" (2/3) ... [2019-11-19 22:54:55,453 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@383dacdc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 19.11 10:54:55, skipping insertion in model container [2019-11-19 22:54:55,453 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-19 22:54:55,453 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:54:55" (3/3) ... [2019-11-19 22:54:55,455 INFO L371 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating-1.c [2019-11-19 22:54:55,496 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-19 22:54:55,496 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-19 22:54:55,496 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-19 22:54:55,496 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 22:54:55,497 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 22:54:55,497 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-19 22:54:55,497 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 22:54:55,497 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-19 22:54:55,510 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-19 22:54:55,534 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:54:55,534 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:54:55,534 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:54:55,541 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:54:55,541 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:54:55,541 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-19 22:54:55,541 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states. [2019-11-19 22:54:55,542 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2019-11-19 22:54:55,542 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-19 22:54:55,543 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-19 22:54:55,543 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2019-11-19 22:54:55,543 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2019-11-19 22:54:55,550 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_~n~0;main_~n~0 := main_#t~nondet0;havoc main_#t~nondet0; 8#L18true assume !!(main_~n~0 <= 2147483646); 11#L19true call rec(main_~n~0, 1 + main_~n~0);< 3#recENTRYtrue [2019-11-19 22:54:55,550 INFO L796 eck$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 [2019-11-19 22:54:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:54:55,556 INFO L82 PathProgramCache]: Analyzing trace with hash 39889, now seen corresponding path program 1 times [2019-11-19 22:54:55,562 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:54:55,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [51944147] [2019-11-19 22:54:55,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:54:55,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,645 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:54:55,646 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:54:55,647 INFO L82 PathProgramCache]: Analyzing trace with hash 29905, now seen corresponding path program 1 times [2019-11-19 22:54:55,647 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:54:55,650 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1087774528] [2019-11-19 22:54:55,650 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:54:55,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,662 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:54:55,664 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 22:54:55,664 INFO L82 PathProgramCache]: Analyzing trace with hash 1188333313, now seen corresponding path program 1 times [2019-11-19 22:54:55,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-19 22:54:55,664 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [400052926] [2019-11-19 22:54:55,664 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-19 22:54:55,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 22:54:55,686 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-19 22:54:55,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 19.11 10:54:55 BoogieIcfgContainer [2019-11-19 22:54:55,945 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-19 22:54:55,945 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 22:54:55,945 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 22:54:55,945 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 22:54:55,946 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 10:54:55" (3/4) ... [2019-11-19 22:54:55,949 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-19 22:54:55,980 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_422caa13-c036-4443-821d-a1ddfc03364c/bin/uautomizer/witness.graphml [2019-11-19 22:54:55,980 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 22:54:55,982 INFO L168 Benchmark]: Toolchain (without parser) took 1091.91 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -145.0 MB). There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:54:55,982 INFO L168 Benchmark]: CDTParser took 1.38 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 22:54:55,983 INFO L168 Benchmark]: CACSL2BoogieTranslator took 308.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. [2019-11-19 22:54:55,983 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.81 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. [2019-11-19 22:54:55,984 INFO L168 Benchmark]: Boogie Preprocessor took 10.93 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. [2019-11-19 22:54:55,984 INFO L168 Benchmark]: RCFGBuilder took 204.75 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. [2019-11-19 22:54:55,985 INFO L168 Benchmark]: BuchiAutomizer took 499.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. [2019-11-19 22:54:55,985 INFO L168 Benchmark]: Witness Printer took 34.86 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. [2019-11-19 22:54:55,987 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.38 ms. Allocated memory is still 1.0 GB. Free memory is still 962.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 308.24 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 141.6 MB). Free memory was 944.7 MB in the beginning and 1.1 GB in the end (delta: -192.9 MB). Peak memory consumption was 23.3 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 29.81 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. * Boogie Preprocessor took 10.93 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. * RCFGBuilder took 204.75 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: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 499.37 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 28.2 MB). Peak memory consumption was 28.2 MB. Max. memory is 11.5 GB. * Witness Printer took 34.86 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 0.4s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 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@32d3d123=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...