./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 e04fb08f Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8 --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 fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-e04fb08 [2022-11-16 12:19:11,366 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-16 12:19:11,369 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-16 12:19:11,409 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-16 12:19:11,409 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-16 12:19:11,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-16 12:19:11,415 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-16 12:19:11,420 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-16 12:19:11,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-16 12:19:11,430 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-16 12:19:11,431 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-16 12:19:11,434 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-16 12:19:11,435 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-16 12:19:11,437 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-16 12:19:11,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-16 12:19:11,439 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-16 12:19:11,441 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-16 12:19:11,442 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-16 12:19:11,444 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-16 12:19:11,447 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-16 12:19:11,452 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-16 12:19:11,454 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-16 12:19:11,455 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-16 12:19:11,457 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-16 12:19:11,464 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-16 12:19:11,468 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-16 12:19:11,469 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-16 12:19:11,470 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-16 12:19:11,471 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-16 12:19:11,472 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-16 12:19:11,472 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-16 12:19:11,473 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-16 12:19:11,474 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-16 12:19:11,475 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-16 12:19:11,476 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-16 12:19:11,476 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-16 12:19:11,477 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-16 12:19:11,477 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-16 12:19:11,477 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-16 12:19:11,478 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-16 12:19:11,479 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-16 12:19:11,480 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/config/svcomp-Termination-64bit-Automizer_Default.epf [2022-11-16 12:19:11,500 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-16 12:19:11,501 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-16 12:19:11,501 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-16 12:19:11,501 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-16 12:19:11,502 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-11-16 12:19:11,503 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-11-16 12:19:11,503 INFO L138 SettingsManager]: * Use SBE=true [2022-11-16 12:19:11,503 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2022-11-16 12:19:11,503 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2022-11-16 12:19:11,504 INFO L138 SettingsManager]: * Use old map elimination=false [2022-11-16 12:19:11,504 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2022-11-16 12:19:11,504 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2022-11-16 12:19:11,504 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2022-11-16 12:19:11,504 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-16 12:19:11,505 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-11-16 12:19:11,505 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-16 12:19:11,505 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-16 12:19:11,505 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2022-11-16 12:19:11,505 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2022-11-16 12:19:11,506 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2022-11-16 12:19:11,506 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-16 12:19:11,506 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2022-11-16 12:19:11,506 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-16 12:19:11,506 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2022-11-16 12:19:11,507 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-16 12:19:11,507 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-11-16 12:19:11,507 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-16 12:19:11,507 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-11-16 12:19:11,508 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2022-11-16 12:19:11,509 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fc6cfc9bc139db752e72885619d5342f9725bf67cec8b7ca9da9022c75c17b44 [2022-11-16 12:19:11,782 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-16 12:19:11,807 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-16 12:19:11,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-16 12:19:11,811 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-16 12:19:11,815 INFO L275 PluginConnector]: CDTParser initialized [2022-11-16 12:19:11,822 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/../../sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2022-11-16 12:19:11,897 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/data/486b849eb/ffcbbf0faebc40368aa1c145cdf5b75b/FLAG1178ff7d7 [2022-11-16 12:19:12,413 INFO L306 CDTParser]: Found 1 translation units. [2022-11-16 12:19:12,414 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/sv-benchmarks/c/termination-crafted/RecursiveNonterminating-1.c [2022-11-16 12:19:12,429 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/data/486b849eb/ffcbbf0faebc40368aa1c145cdf5b75b/FLAG1178ff7d7 [2022-11-16 12:19:12,797 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/data/486b849eb/ffcbbf0faebc40368aa1c145cdf5b75b [2022-11-16 12:19:12,800 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-16 12:19:12,802 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-16 12:19:12,806 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:12,807 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-16 12:19:12,810 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-16 12:19:12,811 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:12" (1/1) ... [2022-11-16 12:19:12,812 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36481450 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:12, skipping insertion in model container [2022-11-16 12:19:12,813 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 12:19:12" (1/1) ... [2022-11-16 12:19:12,820 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-16 12:19:12,833 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-16 12:19:12,987 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:12,990 INFO L203 MainTranslator]: Completed pre-run [2022-11-16 12:19:13,009 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-16 12:19:13,027 INFO L208 MainTranslator]: Completed translation [2022-11-16 12:19:13,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13 WrapperNode [2022-11-16 12:19:13,027 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-16 12:19:13,028 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:13,028 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-16 12:19:13,029 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-16 12:19:13,035 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,039 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,055 INFO L138 Inliner]: procedures = 5, calls = 4, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 10 [2022-11-16 12:19:13,055 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-16 12:19:13,056 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-16 12:19:13,056 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-16 12:19:13,056 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-16 12:19:13,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,065 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,066 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,066 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,070 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,072 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,072 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,073 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-16 12:19:13,075 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-16 12:19:13,075 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-16 12:19:13,075 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-16 12:19:13,077 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (1/1) ... [2022-11-16 12:19:13,083 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2022-11-16 12:19:13,098 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/z3 [2022-11-16 12:19:13,112 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2022-11-16 12:19:13,126 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2022-11-16 12:19:13,161 INFO L130 BoogieDeclarations]: Found specification of procedure rec [2022-11-16 12:19:13,162 INFO L138 BoogieDeclarations]: Found implementation of procedure rec [2022-11-16 12:19:13,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-16 12:19:13,163 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-16 12:19:13,223 INFO L235 CfgBuilder]: Building ICFG [2022-11-16 12:19:13,225 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-16 12:19:13,317 INFO L276 CfgBuilder]: Performing block encoding [2022-11-16 12:19:13,325 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-16 12:19:13,325 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-11-16 12:19:13,327 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:13 BoogieIcfgContainer [2022-11-16 12:19:13,327 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-16 12:19:13,328 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2022-11-16 12:19:13,328 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2022-11-16 12:19:13,332 INFO L275 PluginConnector]: BuchiAutomizer initialized [2022-11-16 12:19:13,333 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:19:13,333 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 16.11 12:19:12" (1/3) ... [2022-11-16 12:19:13,334 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c9fa56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:19:13, skipping insertion in model container [2022-11-16 12:19:13,334 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:19:13,334 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 12:19:13" (2/3) ... [2022-11-16 12:19:13,335 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@7c9fa56a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 16.11 12:19:13, skipping insertion in model container [2022-11-16 12:19:13,335 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2022-11-16 12:19:13,335 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:13" (3/3) ... [2022-11-16 12:19:13,336 INFO L332 chiAutomizerObserver]: Analyzing ICFG RecursiveNonterminating-1.c [2022-11-16 12:19:13,391 INFO L303 stractBuchiCegarLoop]: Interprodecural is true [2022-11-16 12:19:13,391 INFO L304 stractBuchiCegarLoop]: Hoare is false [2022-11-16 12:19:13,391 INFO L305 stractBuchiCegarLoop]: Compute interpolants for ForwardPredicates [2022-11-16 12:19:13,392 INFO L306 stractBuchiCegarLoop]: Backedges is STRAIGHT_LINE [2022-11-16 12:19:13,392 INFO L307 stractBuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2022-11-16 12:19:13,392 INFO L308 stractBuchiCegarLoop]: Difference is false [2022-11-16 12:19:13,392 INFO L309 stractBuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2022-11-16 12:19:13,392 INFO L313 stractBuchiCegarLoop]: ======== Iteration 0 == of CEGAR loop == BuchiAutomatonCegarLoop ======== [2022-11-16 12:19:13,397 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:19:13,416 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 12:19:13,417 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:19:13,417 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:19:13,423 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-16 12:19:13,423 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:19:13,424 INFO L335 stractBuchiCegarLoop]: ======== Iteration 1 ============ [2022-11-16 12:19:13,424 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 13 states, 9 states have (on average 1.2222222222222223) internal successors, (11), 10 states have internal predecessors, (11), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-11-16 12:19:13,425 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2022-11-16 12:19:13,425 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2022-11-16 12:19:13,426 INFO L119 BuchiIsEmpty]: Starting construction of run [2022-11-16 12:19:13,426 INFO L148 hiAutomatonCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2022-11-16 12:19:13,426 INFO L149 hiAutomatonCegarLoop]: Counterexample loop histogram [1, 1, 1] [2022-11-16 12:19:13,434 INFO L748 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~n~0#1;main_~n~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 9#L18true assume !!(main_~n~0#1 <= 2147483646); 12#L19true call rec(main_~n~0#1, 1 + main_~n~0#1);< 10#recENTRYtrue [2022-11-16 12:19:13,434 INFO L750 eck$LassoCheckResult]: Loop: 10#recENTRYtrue ~x := #in~x;~y := #in~y; 3#L11true assume ~x <= 23 && ~x >= -42; 5#L12true call rec(2 * ~y - 2, 1 + ~x);< 10#recENTRYtrue [2022-11-16 12:19:13,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:13,441 INFO L85 PathProgramCache]: Analyzing trace with hash 1202731, now seen corresponding path program 1 times [2022-11-16 12:19:13,449 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:13,450 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056999163] [2022-11-16 12:19:13,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:13,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:13,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,535 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:19:13,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,556 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:19:13,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:13,559 INFO L85 PathProgramCache]: Analyzing trace with hash 29906, now seen corresponding path program 1 times [2022-11-16 12:19:13,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:13,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313802852] [2022-11-16 12:19:13,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:13,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:19:13,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,576 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:19:13,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-16 12:19:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash 1470820968, now seen corresponding path program 1 times [2022-11-16 12:19:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-11-16 12:19:13,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [553883086] [2022-11-16 12:19:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-16 12:19:13,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-16 12:19:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,590 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:19:13,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,600 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-11-16 12:19:13,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,844 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-11-16 12:19:13,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-11-16 12:19:13,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 16.11 12:19:13 BoogieIcfgContainer [2022-11-16 12:19:13,870 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2022-11-16 12:19:13,871 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-11-16 12:19:13,871 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-11-16 12:19:13,871 INFO L275 PluginConnector]: Witness Printer initialized [2022-11-16 12:19:13,872 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.11 12:19:13" (3/4) ... [2022-11-16 12:19:13,874 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2022-11-16 12:19:13,905 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/witness.graphml [2022-11-16 12:19:13,906 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-11-16 12:19:13,907 INFO L158 Benchmark]: Toolchain (without parser) took 1105.11ms. Allocated memory is still 117.4MB. Free memory was 81.7MB in the beginning and 58.7MB in the end (delta: 23.0MB). Peak memory consumption was 22.4MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,908 INFO L158 Benchmark]: CDTParser took 6.28ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 98.2MB in the end (delta: -8.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,909 INFO L158 Benchmark]: CACSL2BoogieTranslator took 221.34ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 94.4MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,910 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.14ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-11-16 12:19:13,910 INFO L158 Benchmark]: Boogie Preprocessor took 17.85ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 92.3MB in the end (delta: 594.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,911 INFO L158 Benchmark]: RCFGBuilder took 252.18ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 83.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,912 INFO L158 Benchmark]: BuchiAutomizer took 542.46ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 60.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,912 INFO L158 Benchmark]: Witness Printer took 35.01ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 58.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-11-16 12:19:13,916 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 6.28ms. Allocated memory is still 117.4MB. Free memory was 89.3MB in the beginning and 98.2MB in the end (delta: -8.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 221.34ms. Allocated memory is still 117.4MB. Free memory was 81.4MB in the beginning and 94.4MB in the end (delta: -13.0MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 27.14ms. Allocated memory is still 117.4MB. Free memory was 94.4MB in the beginning and 93.3MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 17.85ms. Allocated memory is still 117.4MB. Free memory was 92.8MB in the beginning and 92.3MB in the end (delta: 594.0kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 252.18ms. Allocated memory is still 117.4MB. Free memory was 92.3MB in the beginning and 83.4MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 542.46ms. Allocated memory is still 117.4MB. Free memory was 83.4MB in the beginning and 60.2MB in the end (delta: 23.2MB). Peak memory consumption was 23.1MB. Max. memory is 16.1GB. * Witness Printer took 35.01ms. Allocated memory is still 117.4MB. Free memory was 60.2MB in the beginning and 58.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * 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 0.4s. 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: 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 InitialAbstractionConstructionTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - LassoShapedNonTerminationArgument [Line: 10]: Nontermination argument in form of an infinite program execution. Nontermination argument in form of an infinite program execution. Stem: [L17] int n = __VERIFIER_nondet_int(); [L18] COND FALSE !(!(n<=2147483646)) VAL [n=0] [L19] CALL rec(n, n + 1) VAL [\old(x)=0, \old(y)=1] Loop: [L11] COND TRUE x <= 23 && x >= -42 [L12] CALL rec(2*y-2, x + 1) End of lasso representation. - 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)) VAL [n=0] [L19] CALL rec(n, n + 1) VAL [\old(x)=0, \old(y)=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! [2022-11-16 12:19:13,941 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b236e807-692d-48a1-8811-1b167752c351/bin/uautomizer-tPACEb0tL8/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(TERM)