./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 6b5699aa Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c -s /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/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 75dd2ce3f6219a56f38a72471186bda1e7610d5c ........................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM) --- Real Ultimate output --- This is Ultimate 0.1.24-6b5699a [2019-11-25 08:51:14,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-25 08:51:14,361 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-25 08:51:14,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-25 08:51:14,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-25 08:51:14,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-25 08:51:14,384 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-25 08:51:14,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-25 08:51:14,399 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-25 08:51:14,403 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-25 08:51:14,405 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-25 08:51:14,406 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-25 08:51:14,407 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-25 08:51:14,409 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-25 08:51:14,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-25 08:51:14,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-25 08:51:14,413 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-25 08:51:14,414 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-25 08:51:14,417 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-25 08:51:14,421 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-25 08:51:14,425 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-25 08:51:14,429 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-25 08:51:14,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-25 08:51:14,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-25 08:51:14,435 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-25 08:51:14,435 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-25 08:51:14,435 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-25 08:51:14,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-25 08:51:14,437 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-25 08:51:14,438 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-25 08:51:14,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-25 08:51:14,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-25 08:51:14,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-25 08:51:14,441 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-25 08:51:14,442 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-25 08:51:14,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-25 08:51:14,443 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-25 08:51:14,443 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-25 08:51:14,444 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-25 08:51:14,445 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-25 08:51:14,446 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-25 08:51:14,447 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2019-11-25 08:51:14,477 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-25 08:51:14,487 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-25 08:51:14,488 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-25 08:51:14,488 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * Use SBE=true [2019-11-25 08:51:14,489 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * Use old map elimination=false [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2019-11-25 08:51:14,489 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2019-11-25 08:51:14,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-25 08:51:14,490 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-25 08:51:14,490 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-25 08:51:14,490 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-25 08:51:14,490 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2019-11-25 08:51:14,491 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2019-11-25 08:51:14,491 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2019-11-25 08:51:14,491 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-11-25 08:51:14,491 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2019-11-25 08:51:14,491 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-25 08:51:14,492 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2019-11-25 08:51:14,492 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-25 08:51:14,492 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-25 08:51:14,492 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2019-11-25 08:51:14,492 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-25 08:51:14,493 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-25 08:51:14,493 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2019-11-25 08:51:14,494 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2019-11-25 08:51:14,494 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_93327316-708b-4586-99ec-afa03ad244b7/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 -> 75dd2ce3f6219a56f38a72471186bda1e7610d5c [2019-11-25 08:51:14,657 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-25 08:51:14,669 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-25 08:51:14,673 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-25 08:51:14,674 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-25 08:51:14,676 INFO L275 PluginConnector]: CDTParser initialized [2019-11-25 08:51:14,677 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2019-11-25 08:51:14,737 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/data/bba9027c1/b3830918554c402192433b58fc6c25c5/FLAG1f914188e [2019-11-25 08:51:15,114 INFO L306 CDTParser]: Found 1 translation units. [2019-11-25 08:51:15,115 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/sv-benchmarks/c/termination-crafted-lit/ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2019-11-25 08:51:15,121 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/data/bba9027c1/b3830918554c402192433b58fc6c25c5/FLAG1f914188e [2019-11-25 08:51:15,480 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/data/bba9027c1/b3830918554c402192433b58fc6c25c5 [2019-11-25 08:51:15,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-25 08:51:15,484 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-11-25 08:51:15,484 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:15,485 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-25 08:51:15,492 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-25 08:51:15,493 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3b0b6f8f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15, skipping insertion in model container [2019-11-25 08:51:15,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,504 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-25 08:51:15,520 INFO L179 MainTranslator]: Built tables and reachable declarations [2019-11-25 08:51:15,718 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:15,722 INFO L201 MainTranslator]: Completed pre-run [2019-11-25 08:51:15,742 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-25 08:51:15,873 INFO L205 MainTranslator]: Completed translation [2019-11-25 08:51:15,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15 WrapperNode [2019-11-25 08:51:15,873 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-25 08:51:15,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:15,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-11-25 08:51:15,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-11-25 08:51:15,882 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,887 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-11-25 08:51:15,907 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-25 08:51:15,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-25 08:51:15,908 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-25 08:51:15,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,918 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,919 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,919 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,920 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,924 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,925 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... [2019-11-25 08:51:15,926 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-25 08:51:15,927 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-25 08:51:15,927 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-25 08:51:15,927 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-25 08:51:15,928 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/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 [2019-11-25 08:51:15,997 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-25 08:51:15,997 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-25 08:51:16,153 INFO L279 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-25 08:51:16,154 INFO L284 CfgBuilder]: Removed 5 assume(true) statements. [2019-11-25 08:51:16,155 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:16 BoogieIcfgContainer [2019-11-25 08:51:16,155 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-25 08:51:16,156 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2019-11-25 08:51:16,156 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2019-11-25 08:51:16,159 INFO L275 PluginConnector]: BuchiAutomizer initialized [2019-11-25 08:51:16,160 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:16,160 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 25.11 08:51:15" (1/3) ... [2019-11-25 08:51:16,161 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427621a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:16, skipping insertion in model container [2019-11-25 08:51:16,161 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:16,161 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 08:51:15" (2/3) ... [2019-11-25 08:51:16,162 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@427621a5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 25.11 08:51:16, skipping insertion in model container [2019-11-25 08:51:16,162 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2019-11-25 08:51:16,162 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:16" (3/3) ... [2019-11-25 08:51:16,164 INFO L371 chiAutomizerObserver]: Analyzing ICFG ChenCookFuhsNimkarOHearn-TACAS2014-Introduction.c [2019-11-25 08:51:16,208 INFO L356 BuchiCegarLoop]: Interprodecural is true [2019-11-25 08:51:16,208 INFO L357 BuchiCegarLoop]: Hoare is false [2019-11-25 08:51:16,208 INFO L358 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2019-11-25 08:51:16,208 INFO L359 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-25 08:51:16,208 INFO L360 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-25 08:51:16,208 INFO L361 BuchiCegarLoop]: Difference is false [2019-11-25 08:51:16,208 INFO L362 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-25 08:51:16,208 INFO L365 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2019-11-25 08:51:16,223 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:51:16,244 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:51:16,244 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:16,245 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:16,251 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:51:16,251 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:16,252 INFO L424 BuchiCegarLoop]: ======== Iteration 1============ [2019-11-25 08:51:16,252 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 7 states. [2019-11-25 08:51:16,253 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:51:16,253 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:16,253 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:16,253 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:51:16,253 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:16,262 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L18true assume !(main_~k~0 >= 0);main_~i~0 := -1; 6#L23-1true [2019-11-25 08:51:16,262 INFO L796 eck$LassoCheckResult]: Loop: 6#L23-1true assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 6#L23-1true [2019-11-25 08:51:16,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,269 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2019-11-25 08:51:16,278 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,278 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [831579176] [2019-11-25 08:51:16,278 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,366 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,367 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 1 times [2019-11-25 08:51:16,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,368 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1254095921] [2019-11-25 08:51:16,368 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,375 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,377 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2019-11-25 08:51:16,377 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,377 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [25986360] [2019-11-25 08:51:16,378 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-25 08:51:16,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-25 08:51:16,429 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [25986360] [2019-11-25 08:51:16,430 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-25 08:51:16,430 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-11-25 08:51:16,432 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111640320] [2019-11-25 08:51:16,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-25 08:51:16,477 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-11-25 08:51:16,478 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-11-25 08:51:16,480 INFO L87 Difference]: Start difference. First operand 7 states. Second operand 3 states. [2019-11-25 08:51:16,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-25 08:51:16,522 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2019-11-25 08:51:16,523 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-11-25 08:51:16,525 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2019-11-25 08:51:16,525 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:51:16,529 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 3 states and 3 transitions. [2019-11-25 08:51:16,530 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 3 [2019-11-25 08:51:16,531 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 3 [2019-11-25 08:51:16,531 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 3 transitions. [2019-11-25 08:51:16,531 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2019-11-25 08:51:16,531 INFO L688 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-11-25 08:51:16,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3 states and 3 transitions. [2019-11-25 08:51:16,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3 to 3. [2019-11-25 08:51:16,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2019-11-25 08:51:16,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 3 transitions. [2019-11-25 08:51:16,559 INFO L711 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-11-25 08:51:16,559 INFO L591 BuchiCegarLoop]: Abstraction has 3 states and 3 transitions. [2019-11-25 08:51:16,560 INFO L424 BuchiCegarLoop]: ======== Iteration 2============ [2019-11-25 08:51:16,560 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 3 states and 3 transitions. [2019-11-25 08:51:16,560 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2019-11-25 08:51:16,561 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2019-11-25 08:51:16,561 INFO L119 BuchiIsEmpty]: Starting construction of run [2019-11-25 08:51:16,561 INFO L849 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2019-11-25 08:51:16,561 INFO L850 BuchiCegarLoop]: Counterexample loop histogram [1] [2019-11-25 08:51:16,562 INFO L794 eck$LassoCheckResult]: Stem: 26#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~k~0, main_~i~0;havoc main_~k~0;havoc main_~i~0;main_~k~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~i~0 := main_#t~nondet1;havoc main_#t~nondet1; 27#L18 assume main_~k~0 >= 0; 28#L23-1 [2019-11-25 08:51:16,562 INFO L796 eck$LassoCheckResult]: Loop: 28#L23-1 assume !!(main_~i~0 >= 0);main_~i~0 := main_#t~nondet2;havoc main_#t~nondet2; 28#L23-1 [2019-11-25 08:51:16,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,562 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2019-11-25 08:51:16,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,563 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1523250547] [2019-11-25 08:51:16,563 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,571 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,572 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,572 INFO L82 PathProgramCache]: Analyzing trace with hash 46, now seen corresponding path program 2 times [2019-11-25 08:51:16,572 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,573 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [61232218] [2019-11-25 08:51:16,573 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,579 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-25 08:51:16,580 INFO L82 PathProgramCache]: Analyzing trace with hash 30891, now seen corresponding path program 1 times [2019-11-25 08:51:16,581 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-25 08:51:16,581 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [811875337] [2019-11-25 08:51:16,581 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-25 08:51:16,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-25 08:51:16,594 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-25 08:51:16,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 25.11 08:51:16 BoogieIcfgContainer [2019-11-25 08:51:16,688 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2019-11-25 08:51:16,688 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-25 08:51:16,688 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-25 08:51:16,689 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-25 08:51:16,689 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 08:51:16" (3/4) ... [2019-11-25 08:51:16,696 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2019-11-25 08:51:16,770 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_93327316-708b-4586-99ec-afa03ad244b7/bin/uautomizer/witness.graphml [2019-11-25 08:51:16,770 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-25 08:51:16,774 INFO L168 Benchmark]: Toolchain (without parser) took 1289.09 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 950.1 MB in the beginning and 1.1 GB in the end (delta: -180.3 MB). Peak memory consumption was 7.9 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,775 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 1.0 GB. Free memory is still 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,776 INFO L168 Benchmark]: CACSL2BoogieTranslator took 389.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -229.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,777 INFO L168 Benchmark]: Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,778 INFO L168 Benchmark]: Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-25 08:51:16,782 INFO L168 Benchmark]: RCFGBuilder took 228.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,792 INFO L168 Benchmark]: BuchiAutomizer took 532.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. [2019-11-25 08:51:16,793 INFO L168 Benchmark]: Witness Printer took 83.08 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. [2019-11-25 08:51:16,796 INFO L335 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 967.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 389.43 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 188.2 MB). Free memory was 950.1 MB in the beginning and 1.2 GB in the end (delta: -229.7 MB). Peak memory consumption was 23.2 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 33.06 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 18.88 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 228.52 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 532.26 ms. Allocated memory is still 1.2 GB. Free memory was 1.2 GB in the beginning and 1.1 GB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 11.5 GB. * Witness Printer took 83.08 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic) and one nonterminating remainder module.1 modules have a trivial ranking function, the largest among these consists of 3 locations. The remainder module has 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.4s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.3s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 3 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 8 SDtfs, 0 SDslu, 3 SDs, 0 SdLazy, 4 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc1 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 23]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite execution State at position 0 is {} State at position 1 is {org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@60db29d1=0, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@2857c05e=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@6893adc9=0, i=0, k=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 14]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L15] int k, i; [L16] k = __VERIFIER_nondet_int() [L17] i = __VERIFIER_nondet_int() [L18] COND TRUE k >= 0 Loop: [L23] COND TRUE i >= 0 [L24] i = __VERIFIER_nondet_int() End of lasso representation. RESULT: Ultimate proved your program to be incorrect! Received shutdown request...