./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version a4ecdabc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash 85f2e4e7c23d8b1ce231f007b62f4b33450b6456 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-29 19:41:10,649 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 19:41:10,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 19:41:10,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 19:41:10,729 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 19:41:10,736 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 19:41:10,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 19:41:10,748 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 19:41:10,755 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 19:41:10,757 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 19:41:10,759 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 19:41:10,762 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 19:41:10,764 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 19:41:10,769 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 19:41:10,771 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 19:41:10,774 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 19:41:10,777 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 19:41:10,788 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 19:41:10,791 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 19:41:10,799 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 19:41:10,806 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 19:41:10,808 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 19:41:10,810 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 19:41:10,812 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 19:41:10,816 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 19:41:10,818 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 19:41:10,819 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 19:41:10,822 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 19:41:10,823 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 19:41:10,824 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 19:41:10,825 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 19:41:10,827 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 19:41:10,830 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 19:41:10,831 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 19:41:10,833 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 19:41:10,833 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 19:41:10,835 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 19:41:10,835 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 19:41:10,835 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 19:41:10,836 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 19:41:10,837 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 19:41:10,841 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 19:41:10,888 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 19:41:10,890 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 19:41:10,892 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 19:41:10,894 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 19:41:10,894 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 19:41:10,895 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 19:41:10,895 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 19:41:10,895 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 19:41:10,895 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 19:41:10,896 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 19:41:10,897 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 19:41:10,898 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 19:41:10,898 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 19:41:10,898 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 19:41:10,898 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 19:41:10,899 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 19:41:10,899 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 19:41:10,899 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 19:41:10,899 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 19:41:10,900 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 19:41:10,900 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 19:41:10,900 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 19:41:10,900 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 19:41:10,901 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 19:41:10,901 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 19:41:10,901 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 19:41:10,902 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 19:41:10,902 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 19:41:10,902 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 19:41:10,905 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 19:41:10,905 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-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 85f2e4e7c23d8b1ce231f007b62f4b33450b6456 [2020-11-29 19:41:11,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 19:41:11,224 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 19:41:11,229 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 19:41:11,232 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 19:41:11,233 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 19:41:11,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/../../sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c [2020-11-29 19:41:11,325 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/data/db6f7c17c/2ab4e024749f4a9c9e2cdddba7971de8/FLAGd98dc126f [2020-11-29 19:41:11,840 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 19:41:11,841 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/sv-benchmarks/c/termination-crafted/Lobnya-Boolean-Reordered-2.c [2020-11-29 19:41:11,853 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/data/db6f7c17c/2ab4e024749f4a9c9e2cdddba7971de8/FLAGd98dc126f [2020-11-29 19:41:12,192 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/data/db6f7c17c/2ab4e024749f4a9c9e2cdddba7971de8 [2020-11-29 19:41:12,195 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 19:41:12,197 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 19:41:12,199 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:12,199 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 19:41:12,203 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 19:41:12,204 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,207 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d925773 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12, skipping insertion in model container [2020-11-29 19:41:12,207 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,216 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 19:41:12,230 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 19:41:12,418 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:12,439 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 19:41:12,454 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 19:41:12,468 INFO L208 MainTranslator]: Completed translation [2020-11-29 19:41:12,469 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12 WrapperNode [2020-11-29 19:41:12,469 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 19:41:12,471 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:12,471 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 19:41:12,471 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 19:41:12,483 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,491 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,523 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 19:41:12,525 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 19:41:12,526 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 19:41:12,526 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 19:41:12,537 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,537 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,538 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,539 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,552 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,558 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,559 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... [2020-11-29 19:41:12,561 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 19:41:12,562 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 19:41:12,563 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 19:41:12,563 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 19:41:12,565 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:12,676 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 19:41:12,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 19:41:12,888 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 19:41:12,888 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-29 19:41:12,891 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:12 BoogieIcfgContainer [2020-11-29 19:41:12,891 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 19:41:12,892 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 19:41:12,892 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 19:41:12,899 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 19:41:12,900 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:12,901 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 07:41:12" (1/3) ... [2020-11-29 19:41:12,902 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74413335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:41:12, skipping insertion in model container [2020-11-29 19:41:12,903 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:12,903 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 07:41:12" (2/3) ... [2020-11-29 19:41:12,904 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@74413335 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 07:41:12, skipping insertion in model container [2020-11-29 19:41:12,904 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 19:41:12,904 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:12" (3/3) ... [2020-11-29 19:41:12,906 INFO L373 chiAutomizerObserver]: Analyzing ICFG Lobnya-Boolean-Reordered-2.c [2020-11-29 19:41:13,003 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 19:41:13,004 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 19:41:13,004 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 19:41:13,004 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 19:41:13,004 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 19:41:13,005 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 19:41:13,005 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 19:41:13,005 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 19:41:13,021 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:41:13,043 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:41:13,044 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:13,044 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:13,052 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:41:13,052 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:41:13,052 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 19:41:13,052 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-29 19:41:13,054 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:41:13,054 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:13,055 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:13,055 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-29 19:41:13,055 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:41:13,065 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~b~0;havoc main_~x~0;havoc main_~b~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~b~0 := main_#t~nondet1;havoc main_#t~nondet1; 8#L18true assume !!(main_~x~0 >= -2147483647); 10#L22-2true [2020-11-29 19:41:13,065 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(0 != main_~b~0);main_~b~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 4#L22true assume main_~x~0 >= 0;main_~b~0 := 1; 10#L22-2true [2020-11-29 19:41:13,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:13,072 INFO L82 PathProgramCache]: Analyzing trace with hash 998, now seen corresponding path program 1 times [2020-11-29 19:41:13,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:13,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1560872947] [2020-11-29 19:41:13,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:13,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,162 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:13,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:13,189 INFO L82 PathProgramCache]: Analyzing trace with hash 1444, now seen corresponding path program 1 times [2020-11-29 19:41:13,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:13,190 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440065117] [2020-11-29 19:41:13,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:13,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,210 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,212 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:13,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:13,215 INFO L82 PathProgramCache]: Analyzing trace with hash 959561, now seen corresponding path program 1 times [2020-11-29 19:41:13,216 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:13,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89031269] [2020-11-29 19:41:13,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:13,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,227 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:13,234 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:13,237 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:13,406 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:41:13,407 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:41:13,407 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:41:13,407 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:41:13,408 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 19:41:13,408 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,408 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:41:13,408 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:41:13,409 INFO L133 ssoRankerPreferences]: Filename of dumped script: Lobnya-Boolean-Reordered-2.c_Iteration1_Loop [2020-11-29 19:41:13,418 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:41:13,418 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:41:13,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:13,480 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:13,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:13,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:13,548 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:13,725 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:41:13,727 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,739 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:41:13,739 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:41:13,749 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:41:13,750 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_1=0} Honda state: {v_rep~unnamed0~0~false_1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,775 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:41:13,776 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 19:41:13,780 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:41:13,781 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_1=1} Honda state: {v_rep~unnamed0~0~true_1=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:41:13,839 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:41:13,839 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 19:41:13,847 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,895 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 19:41:13,895 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:41:13,930 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 19:41:13,930 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:13,998 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 19:41:14,002 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 19:41:14,003 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 19:41:14,003 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 19:41:14,003 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 19:41:14,003 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 19:41:14,003 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:14,003 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 19:41:14,003 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 19:41:14,003 INFO L133 ssoRankerPreferences]: Filename of dumped script: Lobnya-Boolean-Reordered-2.c_Iteration1_Loop [2020-11-29 19:41:14,004 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 19:41:14,004 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 19:41:14,006 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:14,062 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:14,086 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:14,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:14,191 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 19:41:14,389 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 19:41:14,395 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:41:14,408 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:41:14,411 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:41:14,412 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:41:14,412 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:41:14,412 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:41:14,425 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:41:14,425 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:14,438 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 19:41:14,491 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:14,493 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:41:14,493 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:41:14,493 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:41:14,494 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:41:14,503 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 19:41:14,503 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 19:41:14,512 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:14,551 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-29 19:41:14,553 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 19:41:14,553 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 19:41:14,554 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 19:41:14,554 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 19:41:14,554 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 19:41:14,555 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 19:41:14,555 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 19:41:14,558 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 19:41:14,565 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 19:41:14,565 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4cddda20-2156-4235-9fa6-4e0e94fc29da/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 19:41:14,569 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 19:41:14,569 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 19:41:14,570 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 19:41:14,570 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-29 19:41:14,596 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 19:41:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:14,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:14,698 INFO L263 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 19:41:14,699 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:14,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:14,716 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 19:41:14,717 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 19:41:14,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:14,772 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-29 19:41:14,774 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 3 states. [2020-11-29 19:41:14,846 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 3 states. Result 32 states and 39 transitions. Complement of second has 7 states. [2020-11-29 19:41:14,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 19:41:14,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 19:41:14,851 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 22 transitions. [2020-11-29 19:41:14,853 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-29 19:41:14,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:41:14,854 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 19:41:14,854 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:41:14,855 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 22 transitions. Stem has 2 letters. Loop has 4 letters. [2020-11-29 19:41:14,855 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 19:41:14,856 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 39 transitions. [2020-11-29 19:41:14,866 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:41:14,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 9 states and 12 transitions. [2020-11-29 19:41:14,872 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 5 [2020-11-29 19:41:14,872 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 6 [2020-11-29 19:41:14,873 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 12 transitions. [2020-11-29 19:41:14,873 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 19:41:14,873 INFO L691 BuchiCegarLoop]: Abstraction has 9 states and 12 transitions. [2020-11-29 19:41:14,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9 states and 12 transitions. [2020-11-29 19:41:14,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9 to 8. [2020-11-29 19:41:14,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2020-11-29 19:41:14,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 11 transitions. [2020-11-29 19:41:14,907 INFO L714 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:41:14,907 INFO L594 BuchiCegarLoop]: Abstraction has 8 states and 11 transitions. [2020-11-29 19:41:14,908 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 19:41:14,908 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states and 11 transitions. [2020-11-29 19:41:14,908 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 2 [2020-11-29 19:41:14,909 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 19:41:14,909 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 19:41:14,910 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-29 19:41:14,910 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1] [2020-11-29 19:41:14,910 INFO L794 eck$LassoCheckResult]: Stem: 79#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~b~0;havoc main_~x~0;havoc main_~b~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~b~0 := main_#t~nondet1;havoc main_#t~nondet1; 80#L18 assume !!(main_~x~0 >= -2147483647); 86#L22-2 assume !!(0 != main_~b~0);main_~b~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 81#L22 [2020-11-29 19:41:14,910 INFO L796 eck$LassoCheckResult]: Loop: 81#L22 assume !(main_~x~0 >= 0);main_~b~0 := 0; 82#L22-2 assume !!(0 != main_~b~0);main_~b~0 := main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1; 81#L22 [2020-11-29 19:41:14,911 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:14,912 INFO L82 PathProgramCache]: Analyzing trace with hash 30953, now seen corresponding path program 1 times [2020-11-29 19:41:14,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:14,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [605387966] [2020-11-29 19:41:14,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:14,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:14,930 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:14,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 19:41:14,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 19:41:14,953 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 19:41:14,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 19:41:14,954 INFO L82 PathProgramCache]: Analyzing trace with hash 1596, now seen corresponding path program 1 times [2020-11-29 19:41:14,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 19:41:14,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [761489115] [2020-11-29 19:41:14,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 19:41:14,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 19:41:14,999 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-29 19:41:15,000 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [761489115] [2020-11-29 19:41:15,001 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 19:41:15,001 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-11-29 19:41:15,001 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074335597] [2020-11-29 19:41:15,006 INFO L811 eck$LassoCheckResult]: loop already infeasible [2020-11-29 19:41:15,006 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 19:41:15,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-29 19:41:15,013 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-29 19:41:15,015 INFO L87 Difference]: Start difference. First operand 8 states and 11 transitions. cyclomatic complexity: 5 Second operand 3 states. [2020-11-29 19:41:15,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 19:41:15,037 INFO L93 Difference]: Finished difference Result 8 states and 9 transitions. [2020-11-29 19:41:15,038 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-29 19:41:15,038 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 8 states and 9 transitions. [2020-11-29 19:41:15,039 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:41:15,039 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 8 states to 0 states and 0 transitions. [2020-11-29 19:41:15,039 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 19:41:15,040 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 19:41:15,040 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 19:41:15,040 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 19:41:15,040 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:41:15,040 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:41:15,040 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 19:41:15,040 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 19:41:15,040 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 19:41:15,041 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 19:41:15,041 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 19:41:15,051 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 07:41:15 BoogieIcfgContainer [2020-11-29 19:41:15,051 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 19:41:15,052 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 19:41:15,052 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 19:41:15,053 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 19:41:15,053 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 07:41:12" (3/4) ... [2020-11-29 19:41:15,057 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 19:41:15,057 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 19:41:15,060 INFO L168 Benchmark]: Toolchain (without parser) took 2861.17 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 51.0 MB in the beginning and 61.6 MB in the end (delta: -10.6 MB). Peak memory consumption was 11.8 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:15,061 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:15,064 INFO L168 Benchmark]: CACSL2BoogieTranslator took 271.09 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 60.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:15,064 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.28 ms. Allocated memory is still 81.8 MB. Free memory was 60.5 MB in the beginning and 59.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:15,065 INFO L168 Benchmark]: Boogie Preprocessor took 35.38 ms. Allocated memory is still 81.8 MB. Free memory was 59.2 MB in the beginning and 58.5 MB in the end (delta: 694.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:15,072 INFO L168 Benchmark]: RCFGBuilder took 328.88 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 50.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:15,073 INFO L168 Benchmark]: BuchiAutomizer took 2158.93 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 50.1 MB in the beginning and 61.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. [2020-11-29 19:41:15,074 INFO L168 Benchmark]: Witness Printer took 4.86 ms. Allocated memory is still 104.9 MB. Free memory is still 61.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 19:41:15,084 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 81.8 MB. Free memory was 41.0 MB in the beginning and 41.0 MB in the end (delta: 75.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 271.09 ms. Allocated memory is still 81.8 MB. Free memory was 50.7 MB in the beginning and 60.5 MB in the end (delta: -9.9 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 53.28 ms. Allocated memory is still 81.8 MB. Free memory was 60.5 MB in the beginning and 59.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 35.38 ms. Allocated memory is still 81.8 MB. Free memory was 59.2 MB in the beginning and 58.5 MB in the end (delta: 694.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 328.88 ms. Allocated memory is still 81.8 MB. Free memory was 58.1 MB in the beginning and 50.1 MB in the end (delta: 8.0 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2158.93 ms. Allocated memory was 81.8 MB in the beginning and 104.9 MB in the end (delta: 23.1 MB). Free memory was 50.1 MB in the beginning and 61.6 MB in the end (delta: -11.5 MB). Peak memory consumption was 14.9 MB. Max. memory is 16.1 GB. * Witness Printer took 4.86 ms. Allocated memory is still 104.9 MB. Free memory is still 61.6 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 2 terminating modules (1 trivial, 1 deterministic, 0 nondeterministic). One deterministic module has affine ranking function x and consists of 5 locations. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.0s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 1.6s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 1. Automata minimization 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 8 states and ocurred in iteration 1. Nontrivial modules had stage [1, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 18 SDtfs, 13 SDslu, 13 SDs, 0 SdLazy, 10 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI1 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital17 mio100 ax170 hnf100 lsp34 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq170 hnf94 smp100 dnf150 smp100 tf108 neg92 sie116 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 42ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 3 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 1 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.1s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...