./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version e943c265 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/Loop-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be --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 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b ................................................................................................................................................................................................................................................................................ 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 0.2.1-dev-e943c26 [2021-10-21 19:49:31,744 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:49:31,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:49:31,785 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:49:31,786 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:49:31,790 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:49:31,792 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:49:31,796 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:49:31,799 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:49:31,804 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:49:31,805 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:49:31,806 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:49:31,807 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:49:31,807 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:49:31,809 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:49:31,810 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:49:31,811 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:49:31,812 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:49:31,815 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:49:31,817 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:49:31,819 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:49:31,820 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:49:31,822 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:49:31,823 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:49:31,826 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:49:31,827 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:49:31,827 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:49:31,828 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:49:31,829 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:49:31,830 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:49:31,830 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:49:31,831 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:49:31,832 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:49:31,833 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:49:31,834 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:49:31,835 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:49:31,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:49:31,836 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:49:31,836 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:49:31,837 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:49:31,838 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:49:31,839 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:49:31,866 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:49:31,867 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:49:31,867 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:49:31,867 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:49:31,869 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:49:31,869 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:49:31,869 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:49:31,869 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:49:31,869 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:49:31,869 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:49:31,870 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:49:31,870 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:49:31,870 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:49:31,870 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:49:31,870 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:49:31,871 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:49:31,872 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:49:31,872 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:49:31,872 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:49:31,872 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:49:31,872 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:49:31,873 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:49:31,873 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:49:31,873 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:49:31,874 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:49:31,874 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_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 42637c171db16e9b30ddb9b81ced3fc8afebc727d3cebc25aef685f9a2d7301b [2021-10-21 19:49:32,156 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:49:32,176 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:49:32,178 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:49:32,180 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:49:32,180 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:49:32,181 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-restricted-15/Loop-2.c [2021-10-21 19:49:32,256 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/data/f4a1e5ec8/fa4c0090e96f4099b4f053d8648c44a3/FLAGb209d18ee [2021-10-21 19:49:32,678 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:49:32,679 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/sv-benchmarks/c/termination-restricted-15/Loop-2.c [2021-10-21 19:49:32,690 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/data/f4a1e5ec8/fa4c0090e96f4099b4f053d8648c44a3/FLAGb209d18ee [2021-10-21 19:49:32,707 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/data/f4a1e5ec8/fa4c0090e96f4099b4f053d8648c44a3 [2021-10-21 19:49:32,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:49:32,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:49:32,712 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:49:32,712 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:49:32,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:49:32,716 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64bf30a0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32, skipping insertion in model container [2021-10-21 19:49:32,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,725 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:49:32,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:49:32,893 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:49:32,897 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:49:32,930 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:49:32,944 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:49:32,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32 WrapperNode [2021-10-21 19:49:32,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:49:32,946 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:49:32,946 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:49:32,946 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:49:32,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,959 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,975 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:49:32,975 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:49:32,976 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:49:32,976 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:49:32,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,986 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,986 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,988 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,992 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:32,993 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:49:32,994 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:49:32,994 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:49:32,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:49:32,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (1/1) ... [2021-10-21 19:49:33,004 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:49:33,015 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:49:33,029 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:49:33,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:49:33,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:49:33,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:49:33,212 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:49:33,213 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:49:33,217 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:49:33 BoogieIcfgContainer [2021-10-21 19:49:33,218 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:49:33,219 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:49:33,219 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:49:33,223 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:49:33,224 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:49:33,225 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:49:32" (1/3) ... [2021-10-21 19:49:33,226 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6031d6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:49:33, skipping insertion in model container [2021-10-21 19:49:33,226 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:49:33,226 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:49:32" (2/3) ... [2021-10-21 19:49:33,227 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6031d6de and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:49:33, skipping insertion in model container [2021-10-21 19:49:33,227 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:49:33,227 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:49:33" (3/3) ... [2021-10-21 19:49:33,229 INFO L389 chiAutomizerObserver]: Analyzing ICFG Loop-2.c [2021-10-21 19:49:33,291 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:49:33,291 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:49:33,291 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:49:33,291 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:49:33,292 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:49:33,292 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:49:33,292 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:49:33,292 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:49:33,305 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:33,324 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 19:49:33,324 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:49:33,325 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:49:33,330 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:49:33,330 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:49:33,331 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:49:33,331 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 6 states, 5 states have (on average 1.4) internal successors, (7), 5 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-10-21 19:49:33,332 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 19:49:33,332 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:49:33,332 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:49:33,333 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:49:33,333 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:49:33,339 INFO L791 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_~a~0, main_~b~0, main_~i~0;havoc main_~a~0;havoc main_~b~0;havoc main_~i~0;main_~a~0 := 5;main_~b~0 := 3;main_~i~0 := 0; 5#L13-2true [2021-10-21 19:49:33,340 INFO L793 eck$LassoCheckResult]: Loop: 5#L13-2true assume !!(main_~i~0 < 10);main_~i~0 := main_~i~0; 5#L13-2true [2021-10-21 19:49:33,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:33,345 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 19:49:33,355 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:33,357 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704380809] [2021-10-21 19:49:33,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:33,359 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:33,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,441 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:49:33,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,464 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:49:33,467 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:33,467 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-21 19:49:33,467 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:33,468 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1227928087] [2021-10-21 19:49:33,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:33,468 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:33,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,481 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:49:33,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,485 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:49:33,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:49:33,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2021-10-21 19:49:33,487 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:49:33,487 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1055596740] [2021-10-21 19:49:33,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:49:33,488 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:49:33,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,496 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:49:33,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:49:33,502 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:49:33,598 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:49:33 BoogieIcfgContainer [2021-10-21 19:49:33,598 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:49:33,599 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:49:33,599 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:49:33,600 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:49:33,600 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:49:33" (3/4) ... [2021-10-21 19:49:33,603 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-10-21 19:49:33,634 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/witness.graphml [2021-10-21 19:49:33,634 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:49:33,636 INFO L168 Benchmark]: Toolchain (without parser) took 924.39 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.7 MB in the beginning and 79.2 MB in the end (delta: -24.5 MB). Peak memory consumption was 13.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,637 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:49:33,638 INFO L168 Benchmark]: CACSL2BoogieTranslator took 232.75 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.4 MB in the beginning and 107.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,639 INFO L168 Benchmark]: Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 130.0 MB. Free memory was 106.4 MB in the beginning and 105.7 MB in the end (delta: 724.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:49:33,640 INFO L168 Benchmark]: Boogie Preprocessor took 18.08 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,641 INFO L168 Benchmark]: RCFGBuilder took 224.07 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 96.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,642 INFO L168 Benchmark]: BuchiAutomizer took 379.35 ms. Allocated memory is still 130.0 MB. Free memory was 96.7 MB in the beginning and 80.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,643 INFO L168 Benchmark]: Witness Printer took 35.20 ms. Allocated memory is still 130.0 MB. Free memory was 80.5 MB in the beginning and 79.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2021-10-21 19:49:33,648 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 90.2 MB. Free memory was 62.6 MB in the beginning and 62.6 MB in the end (delta: 29.7 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 232.75 ms. Allocated memory was 90.2 MB in the beginning and 130.0 MB in the end (delta: 39.8 MB). Free memory was 54.4 MB in the beginning and 107.2 MB in the end (delta: -52.7 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 29.21 ms. Allocated memory is still 130.0 MB. Free memory was 106.4 MB in the beginning and 105.7 MB in the end (delta: 724.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 18.08 ms. Allocated memory is still 130.0 MB. Free memory was 105.7 MB in the beginning and 104.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 224.07 ms. Allocated memory is still 130.0 MB. Free memory was 104.3 MB in the beginning and 96.7 MB in the end (delta: 7.7 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 379.35 ms. Allocated memory is still 130.0 MB. Free memory was 96.7 MB in the beginning and 80.5 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.8 MB. Max. memory is 16.1 GB. * Witness Printer took 35.20 ms. Allocated memory is still 130.0 MB. Free memory was 80.5 MB in the beginning and 79.2 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Trivial decomposition into one nonterminating module. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.3s and 1 iterations. TraceHistogramMax:1. Analysis of lassos took 0.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 0. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had -1 states and ocurred in iteration -1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: No data available LassoAnalysisResults: nont1 unkn0 SFLI0 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 13]: 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 {a=5, \result=0, b=3, i=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 13]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int a; [L7] int b; [L8] int i; [L9] a = 5 [L10] b = 3 [L11] i = 0 Loop: [L13] COND TRUE i < 10 [L13] i = i + 0 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-10-21 19:49:33,699 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1f6feba1-709b-4a00-9824-016c4707d51c/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with exit code 0 Received shutdown request...