./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.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_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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 222b9e0025989dbea1cdc61cba66ae29f96b0141 ................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:09:19,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:09:19,824 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:09:19,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:09:19,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:09:19,896 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:09:19,898 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:09:19,912 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:09:19,915 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:09:19,916 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:09:19,918 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:09:19,920 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:09:19,920 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:09:19,922 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:09:19,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:09:19,926 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:09:19,927 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:09:19,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:09:19,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:09:19,934 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:09:19,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:09:19,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:09:19,944 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:09:19,945 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:09:19,948 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:09:19,949 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:09:19,949 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:09:19,950 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:09:19,951 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:09:19,952 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:09:19,953 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:09:19,954 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:09:19,955 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:09:19,956 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:09:19,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:09:19,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:09:19,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:09:19,960 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:09:19,960 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:09:19,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:09:19,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:09:19,963 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:09:19,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:09:19,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:09:19,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:09:19,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:09:19,992 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:09:19,993 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:09:19,993 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:09:19,993 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:09:19,993 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:09:19,994 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:09:19,994 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:09:19,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:09:19,994 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:09:19,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:09:19,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:09:19,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:09:19,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:09:19,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:09:19,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:09:19,996 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:09:19,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:09:19,997 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:09:19,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:09:19,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:09:19,997 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:09:19,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:09:19,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:09:19,998 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:09:19,998 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:09:20,000 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:09:20,000 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_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 222b9e0025989dbea1cdc61cba66ae29f96b0141 [2020-11-28 03:09:20,253 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:09:20,278 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:09:20,281 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:09:20,283 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:09:20,284 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:09:20,285 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2020-11-28 03:09:20,369 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/data/cf104506a/7f04e87510524236b861c5637690cf9f/FLAG23d793197 [2020-11-28 03:09:20,896 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:09:20,897 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/sv-benchmarks/c/termination-crafted-lit/Avery-FLOPS2006-Table1.c [2020-11-28 03:09:20,903 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/data/cf104506a/7f04e87510524236b861c5637690cf9f/FLAG23d793197 [2020-11-28 03:09:21,280 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/data/cf104506a/7f04e87510524236b861c5637690cf9f [2020-11-28 03:09:21,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:09:21,287 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:09:21,291 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:21,291 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:09:21,295 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:09:21,296 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45f94392 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21, skipping insertion in model container [2020-11-28 03:09:21,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,306 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:09:21,322 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:09:21,515 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:21,527 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:09:21,556 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:09:21,569 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:09:21,571 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21 WrapperNode [2020-11-28 03:09:21,571 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:09:21,572 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:21,572 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:09:21,573 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:09:21,582 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,605 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:09:21,606 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:09:21,606 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:09:21,606 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:09:21,615 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,615 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,616 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,616 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,623 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,624 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... [2020-11-28 03:09:21,625 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:09:21,626 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:09:21,626 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:09:21,626 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:09:21,628 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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 [2020-11-28 03:09:21,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:09:21,708 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:09:21,900 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:09:21,901 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:09:21,903 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:21 BoogieIcfgContainer [2020-11-28 03:09:21,903 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:09:21,904 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:09:21,904 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:09:21,909 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:09:21,910 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:21,911 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:09:21" (1/3) ... [2020-11-28 03:09:21,913 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70f79fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:09:21, skipping insertion in model container [2020-11-28 03:09:21,913 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:21,913 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:09:21" (2/3) ... [2020-11-28 03:09:21,914 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@70f79fb8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:09:21, skipping insertion in model container [2020-11-28 03:09:21,914 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:09:21,914 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:21" (3/3) ... [2020-11-28 03:09:21,916 INFO L373 chiAutomizerObserver]: Analyzing ICFG Avery-FLOPS2006-Table1.c [2020-11-28 03:09:22,003 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:09:22,003 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:09:22,004 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:09:22,004 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:09:22,004 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:09:22,004 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:09:22,004 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:09:22,004 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:09:22,016 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:09:22,031 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:09:22,032 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:09:22,032 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:09:22,037 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:09:22,037 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:09:22,037 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:09:22,037 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 8 states. [2020-11-28 03:09:22,038 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 2 [2020-11-28 03:09:22,038 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:09:22,038 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:09:22,038 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:09:22,039 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:09:22,044 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 10#L20true assume main_~y~0 > 0 && main_~x~0 > 0; 6#L21-2true [2020-11-28 03:09:22,045 INFO L796 eck$LassoCheckResult]: Loop: 6#L21-2true assume !!(main_~i~0 > 0);main_~i~0 := main_~i~0 - 1;main_~z~0 := 1 + main_~z~0; 6#L21-2true [2020-11-28 03:09:22,050 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:22,051 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-28 03:09:22,060 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:22,061 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343048620] [2020-11-28 03:09:22,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:22,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,174 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:22,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:22,176 INFO L82 PathProgramCache]: Analyzing trace with hash 44, now seen corresponding path program 1 times [2020-11-28 03:09:22,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:22,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2102848119] [2020-11-28 03:09:22,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:22,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,188 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,193 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,194 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:22,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:22,196 INFO L82 PathProgramCache]: Analyzing trace with hash 30889, now seen corresponding path program 1 times [2020-11-28 03:09:22,197 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:22,197 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [447233847] [2020-11-28 03:09:22,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:22,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,208 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:22,216 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:22,218 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:22,413 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 13 [2020-11-28 03:09:22,426 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:22,427 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:22,427 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:22,427 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:22,427 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:09:22,428 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,428 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:22,428 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:22,428 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2020-11-28 03:09:22,428 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:22,428 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:22,454 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,472 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,485 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,693 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:22,694 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:22,706 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:22,707 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,719 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:09:22,719 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_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:22,764 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:22,764 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,771 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:09:22,771 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_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,811 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:22,812 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:22,846 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:09:22,846 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,881 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:09:22,883 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:22,883 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:22,883 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:22,883 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:22,883 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:09:22,884 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:22,884 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:22,884 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:22,884 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration1_Loop [2020-11-28 03:09:22,884 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:22,884 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:22,886 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,921 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:22,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:23,093 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:23,097 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:23,109 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 [2020-11-28 03:09:23,117 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:23,118 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:23,118 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:23,118 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,134 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:09:23,136 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:09:23,152 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,194 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 [2020-11-28 03:09:23,196 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:23,196 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:09:23,197 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:23,197 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:23,197 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:23,199 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:09:23,199 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:09:23,208 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:09:23,215 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:09:23,215 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_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,260 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:09:23,261 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:09:23,261 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:09:23,261 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0) = 1*ULTIMATE.start_main_~i~0 Supporting invariants [] [2020-11-28 03:09:23,284 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:09:23,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:23,371 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:09:23,372 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:23,386 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:23,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:23,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:23,401 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:09:23,402 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 8 states. Second operand 2 states. [2020-11-28 03:09:23,455 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 8 states.. Second operand 2 states. Result 28 states and 36 transitions. Complement of second has 6 states. [2020-11-28 03:09:23,456 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:09:23,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:09:23,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-11-28 03:09:23,460 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 1 letters. [2020-11-28 03:09:23,461 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:23,461 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-28 03:09:23,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:23,462 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 2 letters. Loop has 2 letters. [2020-11-28 03:09:23,462 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:23,463 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 28 states and 36 transitions. [2020-11-28 03:09:23,466 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:09:23,470 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 28 states to 6 states and 8 transitions. [2020-11-28 03:09:23,471 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 4 [2020-11-28 03:09:23,471 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 5 [2020-11-28 03:09:23,472 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 8 transitions. [2020-11-28 03:09:23,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:09:23,472 INFO L691 BuchiCegarLoop]: Abstraction has 6 states and 8 transitions. [2020-11-28 03:09:23,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6 states and 8 transitions. [2020-11-28 03:09:23,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6 to 5. [2020-11-28 03:09:23,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:09:23,498 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 7 transitions. [2020-11-28 03:09:23,499 INFO L714 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-28 03:09:23,499 INFO L594 BuchiCegarLoop]: Abstraction has 5 states and 7 transitions. [2020-11-28 03:09:23,499 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:09:23,499 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 5 states and 7 transitions. [2020-11-28 03:09:23,500 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 1 [2020-11-28 03:09:23,500 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:09:23,500 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:09:23,501 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2020-11-28 03:09:23,501 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:09:23,501 INFO L794 eck$LassoCheckResult]: Stem: 69#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_~x~0, main_~y~0, main_~z~0, main_~i~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;havoc main_~i~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := 0;main_~i~0 := main_~x~0; 70#L20 assume main_~y~0 > 0 && main_~x~0 > 0; 72#L21-2 assume !(main_~i~0 > 0); 71#L25-1 [2020-11-28 03:09:23,501 INFO L796 eck$LassoCheckResult]: Loop: 71#L25-1 assume !!(main_~i~0 < main_~y~0);main_~i~0 := 1 + main_~i~0;main_~z~0 := main_~z~0 - 1; 71#L25-1 [2020-11-28 03:09:23,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:23,502 INFO L82 PathProgramCache]: Analyzing trace with hash 30887, now seen corresponding path program 1 times [2020-11-28 03:09:23,502 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:23,502 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1741506303] [2020-11-28 03:09:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:23,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:23,555 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:23,555 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1741506303] [2020-11-28 03:09:23,556 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:09:23,556 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-11-28 03:09:23,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1152999858] [2020-11-28 03:09:23,559 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-28 03:09:23,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:23,560 INFO L82 PathProgramCache]: Analyzing trace with hash 55, now seen corresponding path program 1 times [2020-11-28 03:09:23,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:09:23,560 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466440536] [2020-11-28 03:09:23,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:09:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:23,566 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:23,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:09:23,569 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:09:23,570 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:09:23,600 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:23,600 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:23,601 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:23,601 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:23,601 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:09:23,601 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,601 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:23,601 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:23,601 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2020-11-28 03:09:23,601 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:23,601 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:23,603 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:23,608 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:23,614 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:23,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:23,772 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:23,772 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:23,783 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:23,783 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,792 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:09:23,792 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/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) [2020-11-28 03:09:23,840 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:23,840 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:23,847 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:09:23,847 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_3=1} Honda state: {v_rep~unnamed0~0~true_3=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:23,891 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:09:23,891 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:23,943 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:09:23,943 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,106 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:09:24,108 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:09:24,109 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:09:24,109 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:09:24,109 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:09:24,109 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:09:24,109 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,109 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:09:24,109 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:09:24,109 INFO L133 ssoRankerPreferences]: Filename of dumped script: Avery-FLOPS2006-Table1.c_Iteration2_Loop [2020-11-28 03:09:24,109 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:09:24,109 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:09:24,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:24,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:24,132 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:24,146 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:09:24,293 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:09:24,293 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:24,308 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 [2020-11-28 03:09:24,311 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:24,311 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:24,311 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:24,311 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:24,318 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:09:24,318 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,324 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:24,366 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 [2020-11-28 03:09:24,373 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:24,374 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:24,374 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:24,374 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:24,380 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:09:24,380 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,387 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 15 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 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,428 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 [2020-11-28 03:09:24,431 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:09:24,431 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:09:24,431 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:09:24,431 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:09:24,432 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:09:24,433 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:09:24,434 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:09:24,437 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:09:24,442 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:09:24,442 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_dc174f3a-d7e7-404d-b2fd-689c6b91f1af/bin/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:09:24,452 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:09:24,452 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:09:24,453 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:09:24,453 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~i~0, ULTIMATE.start_main_~y~0) = -1*ULTIMATE.start_main_~i~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:09:24,489 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:09:24,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:09:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:24,529 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:09:24,529 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:24,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:09:24,537 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:09:24,538 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:09:24,538 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:09:24,538 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:09:24,539 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4 Second operand 2 states. [2020-11-28 03:09:24,544 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 5 states and 7 transitions. cyclomatic complexity: 4. Second operand 2 states. Result 6 states and 8 transitions. Complement of second has 2 states. [2020-11-28 03:09:24,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 2 states 1 stem states 0 non-accepting loop states 1 accepting loop states [2020-11-28 03:09:24,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:09:24,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 5 transitions. [2020-11-28 03:09:24,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 1 letters. [2020-11-28 03:09:24,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:24,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-28 03:09:24,546 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:24,546 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 2 states and 5 transitions. Stem has 3 letters. Loop has 2 letters. [2020-11-28 03:09:24,547 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:09:24,547 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 6 states and 8 transitions. [2020-11-28 03:09:24,547 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:09:24,548 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 6 states to 0 states and 0 transitions. [2020-11-28 03:09:24,548 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:09:24,548 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:09:24,548 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:09:24,548 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:09:24,548 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:24,548 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:24,548 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:09:24,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:09:24,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:09:24,552 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 4 states. [2020-11-28 03:09:24,555 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:09:24,555 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2020-11-28 03:09:24,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2020-11-28 03:09:24,556 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2020-11-28 03:09:24,556 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:09:24,556 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2020-11-28 03:09:24,556 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:09:24,557 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:09:24,557 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:09:24,557 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:09:24,557 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:24,557 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:24,557 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:09:24,557 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:09:24,558 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:09:24,558 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:09:24,558 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:09:24,563 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:09:24 BoogieIcfgContainer [2020-11-28 03:09:24,564 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:09:24,564 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:09:24,564 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:09:24,565 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:09:24,565 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:09:21" (3/4) ... [2020-11-28 03:09:24,568 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:09:24,568 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:09:24,570 INFO L168 Benchmark]: Toolchain (without parser) took 3282.05 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 57.4 MB in the beginning and 66.7 MB in the end (delta: -9.3 MB). Peak memory consumption was 12.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:24,570 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 86.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:24,571 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.68 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 88.7 MB in the end (delta: -31.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:24,572 INFO L168 Benchmark]: Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 109.1 MB. Free memory was 88.7 MB in the beginning and 87.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:24,572 INFO L168 Benchmark]: Boogie Preprocessor took 19.44 ms. Allocated memory is still 109.1 MB. Free memory was 87.2 MB in the beginning and 86.3 MB in the end (delta: 956.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:24,573 INFO L168 Benchmark]: RCFGBuilder took 277.28 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 77.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:24,574 INFO L168 Benchmark]: BuchiAutomizer took 2659.42 ms. Allocated memory is still 109.1 MB. Free memory was 77.3 MB in the beginning and 67.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:09:24,574 INFO L168 Benchmark]: Witness Printer took 3.94 ms. Allocated memory is still 109.1 MB. Free memory is still 66.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:09:24,577 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 86.0 MB. Free memory is still 47.8 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.68 ms. Allocated memory was 86.0 MB in the beginning and 109.1 MB in the end (delta: 23.1 MB). Free memory was 57.2 MB in the beginning and 88.7 MB in the end (delta: -31.5 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 32.88 ms. Allocated memory is still 109.1 MB. Free memory was 88.7 MB in the beginning and 87.2 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 19.44 ms. Allocated memory is still 109.1 MB. Free memory was 87.2 MB in the beginning and 86.3 MB in the end (delta: 956.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 277.28 ms. Allocated memory is still 109.1 MB. Free memory was 86.3 MB in the beginning and 77.3 MB in the end (delta: 8.9 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 2659.42 ms. Allocated memory is still 109.1 MB. Free memory was 77.3 MB in the beginning and 67.4 MB in the end (delta: 10.0 MB). Peak memory consumption was 11.1 MB. Max. memory is 16.1 GB. * Witness Printer took 3.94 ms. Allocated memory is still 109.1 MB. Free memory is still 66.7 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 3 terminating modules (1 trivial, 2 deterministic, 0 nondeterministic). One deterministic module has affine ranking function i and consists of 4 locations. One deterministic module has affine ranking function -1 * i + y and consists of 2 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.5s and 3 iterations. TraceHistogramMax:1. Analysis of lassos took 2.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.2s. Highest rank in rank-based complementation 3. Minimization of det autom 3. Minimization of nondet autom 0. 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 5 states and ocurred in iteration 1. Nontrivial modules had stage [2, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 13 SDtfs, 13 SDslu, 3 SDs, 0 SdLazy, 9 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital15 mio100 ax179 hnf100 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq160 hnf93 smp100 dnf100 smp100 tf113 neg100 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 54ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 4 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 2 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...