./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/WhileFalse.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_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/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_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/WhileFalse.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/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_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/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 6bafde5168b708b72da7f2587edb5230d20fcc9c2ad1a62f6bbb27f7dfec2f68 .......................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.1-dev-e943c26 [2021-10-21 19:43:54,677 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-10-21 19:43:54,681 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-10-21 19:43:54,721 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-10-21 19:43:54,722 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-10-21 19:43:54,723 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-10-21 19:43:54,725 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-10-21 19:43:54,728 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-10-21 19:43:54,730 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-10-21 19:43:54,731 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-10-21 19:43:54,733 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-10-21 19:43:54,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-10-21 19:43:54,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-10-21 19:43:54,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-10-21 19:43:54,739 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-10-21 19:43:54,741 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-10-21 19:43:54,742 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-10-21 19:43:54,743 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-10-21 19:43:54,746 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-10-21 19:43:54,749 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-10-21 19:43:54,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-10-21 19:43:54,753 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-10-21 19:43:54,755 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-10-21 19:43:54,756 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-10-21 19:43:54,760 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-10-21 19:43:54,761 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-10-21 19:43:54,762 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-10-21 19:43:54,763 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-10-21 19:43:54,763 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-10-21 19:43:54,765 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-10-21 19:43:54,765 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-10-21 19:43:54,766 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-10-21 19:43:54,767 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-10-21 19:43:54,768 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-10-21 19:43:54,770 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-10-21 19:43:54,770 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-10-21 19:43:54,771 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-10-21 19:43:54,771 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-10-21 19:43:54,772 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-10-21 19:43:54,773 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-10-21 19:43:54,774 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-10-21 19:43:54,775 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/config/svcomp-Termination-64bit-Automizer_Default.epf [2021-10-21 19:43:54,803 INFO L113 SettingsManager]: Loading preferences was successful [2021-10-21 19:43:54,803 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-10-21 19:43:54,803 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-10-21 19:43:54,804 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-10-21 19:43:54,805 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-10-21 19:43:54,805 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-10-21 19:43:54,806 INFO L138 SettingsManager]: * Use SBE=true [2021-10-21 19:43:54,806 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-10-21 19:43:54,806 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-10-21 19:43:54,807 INFO L138 SettingsManager]: * Use old map elimination=false [2021-10-21 19:43:54,807 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-10-21 19:43:54,807 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-10-21 19:43:54,807 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-10-21 19:43:54,808 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-10-21 19:43:54,808 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-10-21 19:43:54,808 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-10-21 19:43:54,809 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-10-21 19:43:54,809 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-10-21 19:43:54,809 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-10-21 19:43:54,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-10-21 19:43:54,810 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-10-21 19:43:54,810 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-10-21 19:43:54,810 INFO L138 SettingsManager]: * Use constant arrays=true [2021-10-21 19:43:54,811 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-10-21 19:43:54,811 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-10-21 19:43:54,811 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-10-21 19:43:54,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-10-21 19:43:54,812 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-10-21 19:43:54,812 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-10-21 19:43:54,813 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-10-21 19:43:54,813 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_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6bafde5168b708b72da7f2587edb5230d20fcc9c2ad1a62f6bbb27f7dfec2f68 [2021-10-21 19:43:55,181 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-10-21 19:43:55,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-10-21 19:43:55,228 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-10-21 19:43:55,231 INFO L271 PluginConnector]: Initializing CDTParser... [2021-10-21 19:43:55,232 INFO L275 PluginConnector]: CDTParser initialized [2021-10-21 19:43:55,233 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/../../sv-benchmarks/c/termination-crafted/WhileFalse.c [2021-10-21 19:43:55,320 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/data/dd3904aa2/9244d719e4c14d31a4b506d21125ca0d/FLAG24470b028 [2021-10-21 19:43:55,830 INFO L306 CDTParser]: Found 1 translation units. [2021-10-21 19:43:55,831 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/sv-benchmarks/c/termination-crafted/WhileFalse.c [2021-10-21 19:43:55,860 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/data/dd3904aa2/9244d719e4c14d31a4b506d21125ca0d/FLAG24470b028 [2021-10-21 19:43:56,235 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/data/dd3904aa2/9244d719e4c14d31a4b506d21125ca0d [2021-10-21 19:43:56,238 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-10-21 19:43:56,240 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-10-21 19:43:56,245 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-10-21 19:43:56,245 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-10-21 19:43:56,250 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-10-21 19:43:56,251 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,253 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6705a12b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56, skipping insertion in model container [2021-10-21 19:43:56,253 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,262 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-10-21 19:43:56,285 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-10-21 19:43:56,491 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:43:56,496 INFO L203 MainTranslator]: Completed pre-run [2021-10-21 19:43:56,520 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-10-21 19:43:56,535 INFO L208 MainTranslator]: Completed translation [2021-10-21 19:43:56,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56 WrapperNode [2021-10-21 19:43:56,536 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-10-21 19:43:56,538 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-10-21 19:43:56,538 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-10-21 19:43:56,538 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-10-21 19:43:56,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,555 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,577 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-10-21 19:43:56,578 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-10-21 19:43:56,578 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-10-21 19:43:56,578 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-10-21 19:43:56,586 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,586 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,587 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,587 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,589 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,593 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,593 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,594 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-10-21 19:43:56,596 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-10-21 19:43:56,596 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-10-21 19:43:56,596 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-10-21 19:43:56,598 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (1/1) ... [2021-10-21 19:43:56,604 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-10-21 19:43:56,618 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/z3 [2021-10-21 19:43:56,651 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-10-21 19:43:56,665 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-10-21 19:43:56,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-10-21 19:43:56,701 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-10-21 19:43:56,790 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-10-21 19:43:56,791 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-10-21 19:43:56,792 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:43:56 BoogieIcfgContainer [2021-10-21 19:43:56,793 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-10-21 19:43:56,794 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-10-21 19:43:56,794 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-10-21 19:43:56,798 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-10-21 19:43:56,798 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:43:56,799 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 21.10 07:43:56" (1/3) ... [2021-10-21 19:43:56,800 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e29d3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:43:56, skipping insertion in model container [2021-10-21 19:43:56,800 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:43:56,800 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.10 07:43:56" (2/3) ... [2021-10-21 19:43:56,800 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3e29d3b3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 21.10 07:43:56, skipping insertion in model container [2021-10-21 19:43:56,801 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-10-21 19:43:56,801 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:43:56" (3/3) ... [2021-10-21 19:43:56,802 INFO L389 chiAutomizerObserver]: Analyzing ICFG WhileFalse.c [2021-10-21 19:43:56,846 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-10-21 19:43:56,846 INFO L360 BuchiCegarLoop]: Hoare is false [2021-10-21 19:43:56,847 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-10-21 19:43:56,847 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-10-21 19:43:56,847 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-10-21 19:43:56,847 INFO L364 BuchiCegarLoop]: Difference is false [2021-10-21 19:43:56,847 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-10-21 19:43:56,847 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-10-21 19:43:56,862 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 19:43:56,874 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 19:43:56,875 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:43:56,875 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:43:56,879 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:43:56,879 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:43:56,879 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-10-21 19:43:56,879 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 19:43:56,880 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2021-10-21 19:43:56,880 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-10-21 19:43:56,880 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-10-21 19:43:56,880 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1] [2021-10-21 19:43:56,880 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1] [2021-10-21 19:43:56,885 INFO L791 eck$LassoCheckResult]: Stem: 5#ULTIMATE.startENTRYtrue havoc main_#res; 6#L14-2true [2021-10-21 19:43:56,885 INFO L793 eck$LassoCheckResult]: Loop: 6#L14-2true assume !!(0 != ~unnamed0~0~false); 6#L14-2true [2021-10-21 19:43:56,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:43:56,890 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2021-10-21 19:43:56,899 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:43:56,900 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598231513] [2021-10-21 19:43:56,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:43:56,901 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:43:56,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:43:56,966 INFO L354 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-10-21 19:43:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-10-21 19:43:56,981 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-10-21 19:43:56,984 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-10-21 19:43:56,984 INFO L82 PathProgramCache]: Analyzing trace with hash 41, now seen corresponding path program 1 times [2021-10-21 19:43:56,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-10-21 19:43:56,985 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1885147183] [2021-10-21 19:43:56,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-10-21 19:43:56,985 INFO L128 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-10-21 19:43:56,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-10-21 19:43:57,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-10-21 19:43:57,005 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-10-21 19:43:57,006 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1885147183] [2021-10-21 19:43:57,007 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1885147183] provided 1 perfect and 0 imperfect interpolant sequences [2021-10-21 19:43:57,007 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-10-21 19:43:57,007 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2021-10-21 19:43:57,008 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [861616020] [2021-10-21 19:43:57,012 INFO L808 eck$LassoCheckResult]: loop already infeasible [2021-10-21 19:43:57,014 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-10-21 19:43:57,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-10-21 19:43:57,032 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-10-21 19:43:57,034 INFO L87 Difference]: Start difference. First 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) Second operand has 2 states, 1 states have (on average 1.0) internal successors, (1), 1 states have internal predecessors, (1), 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 19:43:57,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-10-21 19:43:57,040 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2021-10-21 19:43:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-10-21 19:43:57,042 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 5 transitions. [2021-10-21 19:43:57,043 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:43:57,046 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2021-10-21 19:43:57,047 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-10-21 19:43:57,047 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-10-21 19:43:57,048 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-10-21 19:43:57,048 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-10-21 19:43:57,049 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:43:57,049 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:43:57,049 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-10-21 19:43:57,059 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-10-21 19:43:57,059 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-10-21 19:43:57,059 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-10-21 19:43:57,059 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-10-21 19:43:57,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 21.10 07:43:57 BoogieIcfgContainer [2021-10-21 19:43:57,065 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-10-21 19:43:57,066 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-10-21 19:43:57,066 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-10-21 19:43:57,066 INFO L275 PluginConnector]: Witness Printer initialized [2021-10-21 19:43:57,067 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.10 07:43:56" (3/4) ... [2021-10-21 19:43:57,070 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-10-21 19:43:57,070 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-10-21 19:43:57,072 INFO L168 Benchmark]: Toolchain (without parser) took 830.95 ms. Allocated memory is still 92.3 MB. Free memory was 71.1 MB in the beginning and 69.6 MB in the end (delta: 1.5 MB). Peak memory consumption was 1.9 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:57,073 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:57,074 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.92 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 70.1 MB in the end (delta: 648.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:57,075 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:57,076 INFO L168 Benchmark]: Boogie Preprocessor took 17.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 68.0 MB in the end (delta: 666.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:57,076 INFO L168 Benchmark]: RCFGBuilder took 197.25 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 61.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:57,077 INFO L168 Benchmark]: BuchiAutomizer took 271.34 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 69.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. [2021-10-21 19:43:57,078 INFO L168 Benchmark]: Witness Printer took 4.38 ms. Allocated memory is still 92.3 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-10-21 19:43:57,081 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 92.3 MB. Free memory is still 68.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 291.92 ms. Allocated memory is still 92.3 MB. Free memory was 70.8 MB in the beginning and 70.1 MB in the end (delta: 648.4 kB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 38.95 ms. Allocated memory is still 92.3 MB. Free memory was 70.1 MB in the beginning and 68.9 MB in the end (delta: 1.2 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 17.10 ms. Allocated memory is still 92.3 MB. Free memory was 68.6 MB in the beginning and 68.0 MB in the end (delta: 666.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 197.25 ms. Allocated memory is still 92.3 MB. Free memory was 67.8 MB in the beginning and 61.3 MB in the end (delta: 6.5 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 271.34 ms. Allocated memory is still 92.3 MB. Free memory was 61.3 MB in the beginning and 69.6 MB in the end (delta: -8.4 MB). Peak memory consumption was 18.5 MB. Max. memory is 16.1 GB. * Witness Printer took 4.38 ms. Allocated memory is still 92.3 MB. Free memory is still 69.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 1 terminating modules (1 trivial, 0 deterministic, 0 nondeterministic). 1 modules have a trivial ranking function, the largest among these consists of 2 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 0.2s and 2 iterations. TraceHistogramMax:1. Analysis of lassos took 0.1s. Construction of modules took 0.0s. Büchi inclusion checks took 0.0s. Highest rank in rank-based complementation 0. Minimization of det autom 1. Minimization of nondet autom 0. Automata minimization No data available. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 0 states and ocurred in iteration 1. Nontrivial modules had stage [0, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 5 SDtfs, 0 SDslu, 0 SDs, 0 SdLazy, 0 SolverSat, 0 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0ms Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT0 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: LassoTerminationAnalysisBenchmarks: not availableLassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 0 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 0 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-10-21 19:43:57,134 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8ac2aa61-6b4b-4298-bcce-df2ba9b3cd13/bin/uautomizer-j4sWxH34Be/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...