./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF --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 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 06:22:34,620 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 06:22:34,622 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 06:22:34,675 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 06:22:34,676 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 06:22:34,681 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 06:22:34,683 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 06:22:34,687 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 06:22:34,690 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 06:22:34,696 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 06:22:34,697 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 06:22:34,699 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 06:22:34,700 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 06:22:34,703 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 06:22:34,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 06:22:34,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 06:22:34,716 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 06:22:34,717 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 06:22:34,720 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 06:22:34,731 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 06:22:34,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 06:22:34,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 06:22:34,739 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 06:22:34,740 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 06:22:34,750 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 06:22:34,751 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 06:22:34,751 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 06:22:34,754 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 06:22:34,754 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 06:22:34,756 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 06:22:34,757 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 06:22:34,758 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 06:22:34,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 06:22:34,762 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 06:22:34,764 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 06:22:34,764 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 06:22:34,765 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 06:22:34,765 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 06:22:34,766 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 06:22:34,767 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 06:22:34,768 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 06:22:34,769 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-11-20 06:22:34,809 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 06:22:34,809 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 06:22:34,810 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 06:22:34,810 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 06:22:34,812 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 06:22:34,813 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 06:22:34,813 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 06:22:34,813 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-20 06:22:34,813 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-20 06:22:34,814 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-20 06:22:34,815 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-20 06:22:34,815 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-20 06:22:34,815 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-20 06:22:34,815 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-20 06:22:34,816 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-20 06:22:34,817 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 06:22:34,817 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-20 06:22:34,817 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 06:22:34,817 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-20 06:22:34,817 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 06:22:34,818 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 06:22:34,819 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 06:22:34,820 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 06:22:34,820 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 06:22:34,821 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-20 06:22:34,821 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_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 619980f24f1306727466f5c616de82a47a9f9fa9949a068930aef8a7aa603b17 [2021-11-20 06:22:35,188 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 06:22:35,222 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 06:22:35,225 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 06:22:35,226 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 06:22:35,227 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 06:22:35,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2021-11-20 06:22:35,301 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/data/f7f12f5ee/08fcedb682084886a2f99b2ac3cdcd4c/FLAG2d50a43f1 [2021-11-20 06:22:35,790 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 06:22:35,790 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/sv-benchmarks/c/termination-restricted-15/TwoFloatInterv.c [2021-11-20 06:22:35,803 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/data/f7f12f5ee/08fcedb682084886a2f99b2ac3cdcd4c/FLAG2d50a43f1 [2021-11-20 06:22:36,172 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/data/f7f12f5ee/08fcedb682084886a2f99b2ac3cdcd4c [2021-11-20 06:22:36,177 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 06:22:36,179 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 06:22:36,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 06:22:36,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 06:22:36,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 06:22:36,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6c3f366d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36, skipping insertion in model container [2021-11-20 06:22:36,191 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 06:22:36,214 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 06:22:36,430 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:22:36,438 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 06:22:36,453 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 06:22:36,467 INFO L208 MainTranslator]: Completed translation [2021-11-20 06:22:36,467 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36 WrapperNode [2021-11-20 06:22:36,468 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 06:22:36,469 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 06:22:36,469 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 06:22:36,470 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 06:22:36,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,485 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,506 INFO L137 Inliner]: procedures = 4, calls = 2, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 17 [2021-11-20 06:22:36,507 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 06:22:36,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 06:22:36,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 06:22:36,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 06:22:36,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,523 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,529 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,530 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,531 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 06:22:36,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 06:22:36,534 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 06:22:36,534 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 06:22:36,535 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (1/1) ... [2021-11-20 06:22:36,545 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-20 06:22:36,558 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 06:22:36,573 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-20 06:22:36,576 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-20 06:22:36,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 06:22:36,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 06:22:36,686 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 06:22:36,689 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 06:22:36,805 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 06:22:36,814 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 06:22:36,815 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-20 06:22:36,817 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:22:36 BoogieIcfgContainer [2021-11-20 06:22:36,818 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 06:22:36,819 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-20 06:22:36,819 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-20 06:22:36,824 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-20 06:22:36,826 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:22:36,827 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 20.11 06:22:36" (1/3) ... [2021-11-20 06:22:36,829 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@373421dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:22:36, skipping insertion in model container [2021-11-20 06:22:36,829 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:22:36,829 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 06:22:36" (2/3) ... [2021-11-20 06:22:36,830 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@373421dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 20.11 06:22:36, skipping insertion in model container [2021-11-20 06:22:36,830 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-20 06:22:36,831 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:22:36" (3/3) ... [2021-11-20 06:22:36,833 INFO L388 chiAutomizerObserver]: Analyzing ICFG TwoFloatInterv.c [2021-11-20 06:22:36,899 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-20 06:22:36,899 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-20 06:22:36,900 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-20 06:22:36,900 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-20 06:22:36,900 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-20 06:22:36,900 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-20 06:22:36,900 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-20 06:22:36,901 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-20 06:22:36,917 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-20 06:22:36,939 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 06:22:36,939 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:22:36,939 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:22:36,945 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:22:36,946 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:22:36,946 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-20 06:22:36,946 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 10 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 9 states have internal predecessors, (14), 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) [2021-11-20 06:22:36,948 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2021-11-20 06:22:36,948 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-20 06:22:36,949 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-20 06:22:36,949 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2021-11-20 06:22:36,950 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2021-11-20 06:22:36,957 INFO L791 eck$LassoCheckResult]: Stem: 8#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 11#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet0#1, main_~i~0#1;havoc main_~i~0#1;main_~i~0#1 := main_#t~nondet0#1;havoc main_#t~nondet0#1; 4#L16-1true [2021-11-20 06:22:36,958 INFO L793 eck$LassoCheckResult]: Loop: 4#L16-1true assume !!(main_~i~0#1 > 0 && main_~i~0#1 < 50); 9#L10true assume !(main_~i~0#1 < 20); 6#L10-2true assume main_~i~0#1 > 10;main_~i~0#1 := 1 + main_~i~0#1; 7#L13-1true assume 30 <= main_~i~0#1 && main_~i~0#1 <= 40;main_~i~0#1 := main_~i~0#1 - 1; 4#L16-1true [2021-11-20 06:22:36,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:36,966 INFO L85 PathProgramCache]: Analyzing trace with hash 963, now seen corresponding path program 1 times [2021-11-20 06:22:36,976 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:36,977 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89726584] [2021-11-20 06:22:36,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:36,979 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:37,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,062 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:22:37,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,087 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:22:37,098 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:37,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1267244, now seen corresponding path program 1 times [2021-11-20 06:22:37,099 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:37,099 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [907119834] [2021-11-20 06:22:37,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:37,100 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:37,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,125 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:22:37,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,146 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:22:37,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 06:22:37,154 INFO L85 PathProgramCache]: Analyzing trace with hash 889694446, now seen corresponding path program 1 times [2021-11-20 06:22:37,154 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 06:22:37,155 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448193187] [2021-11-20 06:22:37,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 06:22:37,155 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 06:22:37,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,171 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 06:22:37,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 06:22:37,188 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-20 06:22:37,426 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 20.11 06:22:37 BoogieIcfgContainer [2021-11-20 06:22:37,427 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-20 06:22:37,427 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 06:22:37,428 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 06:22:37,428 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 06:22:37,429 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 06:22:36" (3/4) ... [2021-11-20 06:22:37,432 INFO L134 WitnessPrinter]: Generating witness for non-termination counterexample [2021-11-20 06:22:37,502 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/witness.graphml [2021-11-20 06:22:37,504 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 06:22:37,506 INFO L158 Benchmark]: Toolchain (without parser) took 1325.78ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 46.6MB in the beginning and 84.5MB in the end (delta: -38.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:22:37,507 INFO L158 Benchmark]: CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:22:37,508 INFO L158 Benchmark]: CACSL2BoogieTranslator took 285.41ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 46.4MB in the beginning and 87.6MB in the end (delta: -41.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. [2021-11-20 06:22:37,511 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.52ms. Allocated memory is still 111.1MB. Free memory was 87.6MB in the beginning and 86.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 06:22:37,514 INFO L158 Benchmark]: Boogie Preprocessor took 23.34ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.7MB in the end (delta: 837.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:22:37,514 INFO L158 Benchmark]: RCFGBuilder took 284.56ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 77.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 06:22:37,516 INFO L158 Benchmark]: BuchiAutomizer took 607.63ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 85.9MB in the end (delta: -9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-20 06:22:37,517 INFO L158 Benchmark]: Witness Printer took 76.93ms. Allocated memory is still 111.1MB. Free memory was 85.9MB in the beginning and 84.5MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 06:22:37,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26ms. Allocated memory is still 86.0MB. Free memory is still 63.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 285.41ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 46.4MB in the beginning and 87.6MB in the end (delta: -41.2MB). Peak memory consumption was 10.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.52ms. Allocated memory is still 111.1MB. Free memory was 87.6MB in the beginning and 86.5MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 23.34ms. Allocated memory is still 111.1MB. Free memory was 86.5MB in the beginning and 85.7MB in the end (delta: 837.2kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 284.56ms. Allocated memory is still 111.1MB. Free memory was 85.7MB in the beginning and 77.3MB in the end (delta: 8.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * BuchiAutomizer took 607.63ms. Allocated memory is still 111.1MB. Free memory was 76.7MB in the beginning and 85.9MB in the end (delta: -9.1MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Witness Printer took 76.93ms. Allocated memory is still 111.1MB. Free memory was 85.9MB in the beginning and 84.5MB in the end (delta: 1.3MB). 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 0.5s 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 - TerminationAnalysisResult: Nontermination possible Buchi Automizer proved that your program is nonterminating for some inputs - FixpointNonTerminationResult [Line: 9]: 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 {i=29, \result=0, org.eclipse.cdt.internal.core.dom.parser.c.CASTFunctionCallExpression@5bf29a51=0} - StatisticsResult: NonterminationArgumentStatistics Fixpoint - NonterminatingLassoResult [Line: 9]: Nonterminating execution Found a nonterminating execution for the following lasso shaped sequence of statements. Stem: [L6] int i; [L7] i = __VERIFIER_nondet_int() Loop: [L9] COND TRUE i > 0 && i < 50 [L10] COND FALSE !(i < 20) [L13] COND TRUE i > 10 [L14] i = i+1 [L16] COND TRUE 30 <= i && i <= 40 [L17] i = i-1 End of lasso representation. RESULT: Ultimate proved your program to be incorrect! [2021-11-20 06:22:37,565 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b5e545dd-d209-4d10-8320-9494ceba079a/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Ended with 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)