./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 e334a37fa3ef1f2b757af8cdc97575f5cde09f8b ......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 20:03:33,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-29 20:03:33,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-29 20:03:33,377 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-29 20:03:33,378 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-29 20:03:33,385 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-29 20:03:33,389 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-29 20:03:33,394 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-29 20:03:33,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-29 20:03:33,405 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-29 20:03:33,407 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-29 20:03:33,409 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-29 20:03:33,410 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-29 20:03:33,414 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-29 20:03:33,416 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-29 20:03:33,419 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-29 20:03:33,420 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-29 20:03:33,424 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-29 20:03:33,429 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-29 20:03:33,438 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-29 20:03:33,441 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-29 20:03:33,443 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-29 20:03:33,446 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-29 20:03:33,447 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-29 20:03:33,459 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-29 20:03:33,459 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-29 20:03:33,460 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-29 20:03:33,463 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-29 20:03:33,463 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-29 20:03:33,465 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-29 20:03:33,466 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-29 20:03:33,467 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-29 20:03:33,470 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-29 20:03:33,471 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-29 20:03:33,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-29 20:03:33,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-29 20:03:33,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-29 20:03:33,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-29 20:03:33,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-29 20:03:33,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-29 20:03:33,478 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-29 20:03:33,481 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-29 20:03:33,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-29 20:03:33,527 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-29 20:03:33,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-29 20:03:33,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-29 20:03:33,530 INFO L138 SettingsManager]: * Use SBE=true [2020-11-29 20:03:33,530 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-29 20:03:33,531 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-29 20:03:33,531 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-29 20:03:33,531 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-29 20:03:33,531 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-29 20:03:33,533 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-29 20:03:33,533 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-29 20:03:33,533 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-29 20:03:33,534 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-29 20:03:33,534 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-29 20:03:33,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-29 20:03:33,535 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-29 20:03:33,535 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-29 20:03:33,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-29 20:03:33,536 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-29 20:03:33,536 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-29 20:03:33,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-29 20:03:33,537 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-29 20:03:33,537 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-29 20:03:33,537 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-29 20:03:33,538 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-29 20:03:33,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-29 20:03:33,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-29 20:03:33,539 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-29 20:03:33,540 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-29 20:03:33,541 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e334a37fa3ef1f2b757af8cdc97575f5cde09f8b [2020-11-29 20:03:33,879 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-29 20:03:33,917 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-29 20:03:33,920 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-29 20:03:33,922 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-29 20:03:33,923 INFO L275 PluginConnector]: CDTParser initialized [2020-11-29 20:03:33,924 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-11-29 20:03:34,012 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/data/63dbda769/0730e98b64164a1786d0f7f2e8fc5943/FLAGc12dd4d2d [2020-11-29 20:03:34,650 INFO L306 CDTParser]: Found 1 translation units. [2020-11-29 20:03:34,651 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/sv-benchmarks/c/termination-crafted-lit/AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-11-29 20:03:34,659 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/data/63dbda769/0730e98b64164a1786d0f7f2e8fc5943/FLAGc12dd4d2d [2020-11-29 20:03:35,024 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/data/63dbda769/0730e98b64164a1786d0f7f2e8fc5943 [2020-11-29 20:03:35,029 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-29 20:03:35,031 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-29 20:03:35,036 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-29 20:03:35,036 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-29 20:03:35,040 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-29 20:03:35,041 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,043 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@692ef6ed and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35, skipping insertion in model container [2020-11-29 20:03:35,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-29 20:03:35,067 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-29 20:03:35,269 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:03:35,285 INFO L203 MainTranslator]: Completed pre-run [2020-11-29 20:03:35,319 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-29 20:03:35,335 INFO L208 MainTranslator]: Completed translation [2020-11-29 20:03:35,336 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35 WrapperNode [2020-11-29 20:03:35,336 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-29 20:03:35,337 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-29 20:03:35,338 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-29 20:03:35,338 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-29 20:03:35,351 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,357 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,377 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-29 20:03:35,379 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-29 20:03:35,380 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-29 20:03:35,380 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-29 20:03:35,390 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,390 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,391 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,392 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,395 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,400 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,401 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... [2020-11-29 20:03:35,403 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-29 20:03:35,405 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-29 20:03:35,406 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-29 20:03:35,406 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-29 20:03:35,407 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 20:03:35,499 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-29 20:03:35,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-29 20:03:35,719 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-29 20:03:35,720 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-29 20:03:35,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:35 BoogieIcfgContainer [2020-11-29 20:03:35,723 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-29 20:03:35,724 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-29 20:03:35,725 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-29 20:03:35,729 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-29 20:03:35,730 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:03:35,731 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 29.11 08:03:35" (1/3) ... [2020-11-29 20:03:35,733 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3db016c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:03:35, skipping insertion in model container [2020-11-29 20:03:35,733 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:03:35,733 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.11 08:03:35" (2/3) ... [2020-11-29 20:03:35,734 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@3db016c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 29.11 08:03:35, skipping insertion in model container [2020-11-29 20:03:35,734 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-29 20:03:35,735 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:35" (3/3) ... [2020-11-29 20:03:35,737 INFO L373 chiAutomizerObserver]: Analyzing ICFG AliasDarteFeautrierGonnord-SAS2010-Fig1.c [2020-11-29 20:03:35,843 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-29 20:03:35,844 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-29 20:03:35,844 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-29 20:03:35,844 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-29 20:03:35,844 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-29 20:03:35,844 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-29 20:03:35,845 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-29 20:03:35,845 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-29 20:03:35,860 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 20:03:35,882 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:35,882 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:35,883 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:35,889 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:03:35,889 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:03:35,889 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-29 20:03:35,890 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states. [2020-11-29 20:03:35,891 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:35,892 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:35,892 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:35,892 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-29 20:03:35,892 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:03:35,901 INFO L794 eck$LassoCheckResult]: Stem: 4#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 5#L18-2true [2020-11-29 20:03:35,903 INFO L796 eck$LassoCheckResult]: Loop: 5#L18-2true assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 11#L19true assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 7#L19-2true main_~y~0 := main_~y~0 - 1; 5#L18-2true [2020-11-29 20:03:35,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:35,913 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-29 20:03:35,925 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:35,927 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1602419842] [2020-11-29 20:03:35,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:36,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,036 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,078 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:36,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:36,083 INFO L82 PathProgramCache]: Analyzing trace with hash 40299, now seen corresponding path program 1 times [2020-11-29 20:03:36,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:36,085 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122560797] [2020-11-29 20:03:36,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:36,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,107 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,120 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,123 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:36,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:36,137 INFO L82 PathProgramCache]: Analyzing trace with hash 963820, now seen corresponding path program 1 times [2020-11-29 20:03:36,138 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:36,139 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [731243618] [2020-11-29 20:03:36,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:36,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:36,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:36,332 WARN L193 SmtUtils]: Spent 152.00 ms on a formula simplification that was a NOOP. DAG size: 12 [2020-11-29 20:03:36,407 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:36,409 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:36,409 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:36,409 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:36,409 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:36,410 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:36,410 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:36,410 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:36,410 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2020-11-29 20:03:36,411 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:36,411 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:36,438 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 20:03:36,461 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 20:03:36,475 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 20:03:36,491 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 20:03:36,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:03:36,713 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:36,714 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:36,730 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:36,730 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 [2020-11-29 20:03:36,741 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:36,742 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 20:03:36,791 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:36,791 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:36,798 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:36,798 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 [2020-11-29 20:03:36,844 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:36,846 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:36,851 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:36,852 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~x~0=0} Honda state: {ULTIMATE.start_main_~x~0=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:36,926 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:36,926 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 [2020-11-29 20:03:36,931 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:36,932 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 20:03:36,980 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:36,980 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 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 20:03:37,038 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:37,039 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,087 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:37,090 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:37,091 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:37,091 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:37,091 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:37,091 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:37,091 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,091 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:37,091 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:37,092 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration1_Loop [2020-11-29 20:03:37,092 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:37,092 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:37,094 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 20:03:37,105 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 20:03:37,110 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:03:37,116 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 20:03:37,128 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 20:03:37,298 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:37,305 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 20:03:37,321 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 20:03:37,324 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:37,325 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:37,325 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:37,325 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:37,336 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:37,336 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,349 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:37,401 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 20:03:37,404 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:37,404 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:37,404 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:37,404 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:37,414 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:37,417 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,427 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:37,477 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 20:03:37,481 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:37,481 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:37,482 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:37,482 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:37,482 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:37,485 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:37,485 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,488 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:37,543 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 20:03:37,545 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:37,545 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:37,546 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:37,546 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:37,546 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:37,548 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:37,548 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,554 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:37,606 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 20:03:37,608 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:37,609 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:37,609 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:37,609 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:37,609 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:37,613 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:37,613 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,617 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:37,621 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:37,622 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:37,636 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:37,637 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:37,637 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:37,638 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:37,686 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:37,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:37,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:37,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:37,748 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:37,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:37,767 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:37,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:37,799 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 20:03:37,812 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 20:03:37,814 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states. Second operand 3 states. [2020-11-29 20:03:37,905 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states.. Second operand 3 states. Result 37 states and 54 transitions. Complement of second has 8 states. [2020-11-29 20:03:37,906 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 20:03:37,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-29 20:03:37,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 26 transitions. [2020-11-29 20:03:37,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-29 20:03:37,910 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:37,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-29 20:03:37,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:37,911 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 26 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-29 20:03:37,911 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:37,912 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 37 states and 54 transitions. [2020-11-29 20:03:37,916 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:37,920 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 37 states to 14 states and 20 transitions. [2020-11-29 20:03:37,922 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-29 20:03:37,922 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-29 20:03:37,923 INFO L73 IsDeterministic]: Start isDeterministic. Operand 14 states and 20 transitions. [2020-11-29 20:03:37,923 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:37,923 INFO L691 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-11-29 20:03:37,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states and 20 transitions. [2020-11-29 20:03:37,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2020-11-29 20:03:37,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-11-29 20:03:37,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 20 transitions. [2020-11-29 20:03:37,950 INFO L714 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-11-29 20:03:37,950 INFO L594 BuchiCegarLoop]: Abstraction has 14 states and 20 transitions. [2020-11-29 20:03:37,950 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-29 20:03:37,950 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 14 states and 20 transitions. [2020-11-29 20:03:37,951 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:37,951 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:37,951 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:37,952 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-29 20:03:37,952 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:03:37,952 INFO L794 eck$LassoCheckResult]: Stem: 92#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 93#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 91#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 98#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2020-11-29 20:03:37,952 INFO L796 eck$LassoCheckResult]: Loop: 99#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 99#L20-2 [2020-11-29 20:03:37,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:37,953 INFO L82 PathProgramCache]: Analyzing trace with hash 963347, now seen corresponding path program 1 times [2020-11-29 20:03:37,953 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:37,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1951619841] [2020-11-29 20:03:37,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:37,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,961 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,967 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,968 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:37,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:37,969 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-11-29 20:03:37,969 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:37,970 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1208239814] [2020-11-29 20:03:37,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:37,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,978 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,979 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:37,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:37,980 INFO L82 PathProgramCache]: Analyzing trace with hash 29863779, now seen corresponding path program 2 times [2020-11-29 20:03:37,980 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:37,980 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098881247] [2020-11-29 20:03:37,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:37,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,989 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:37,996 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:37,998 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:38,019 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:38,020 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:38,020 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:38,020 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:38,020 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:38,020 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,020 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:38,020 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:38,020 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2020-11-29 20:03:38,020 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:38,020 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:38,022 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 20:03:38,027 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 20:03:38,033 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 20:03:38,039 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 20:03:38,190 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:38,191 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:38,199 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:38,199 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,207 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:38,208 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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 [2020-11-29 20:03:38,241 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:38,241 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:38,253 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:38,254 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/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) [2020-11-29 20:03:38,303 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:38,303 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,309 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:38,309 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=-5} Honda state: {ULTIMATE.start_main_#t~nondet2=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 17 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 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,346 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:38,346 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 18 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 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,376 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:38,376 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:38,525 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:38,527 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:38,527 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:38,527 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:38,527 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:38,527 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:38,527 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,527 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:38,527 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:38,528 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration2_Loop [2020-11-29 20:03:38,528 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:38,528 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:38,529 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 20:03:38,535 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 20:03:38,540 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 20:03:38,544 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 20:03:38,746 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 9 [2020-11-29 20:03:38,806 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:38,806 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 19 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 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,810 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 20:03:38,814 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:38,814 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:38,814 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:38,814 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:38,819 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:38,819 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:03:38,825 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 20 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 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,856 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 20:03:38,858 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:38,858 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:38,858 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:38,858 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:38,863 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:38,863 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-29 20:03:38,888 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 21 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 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,925 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 20:03:38,927 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:38,928 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:38,928 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:38,928 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 20:03:38,928 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:38,930 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 20:03:38,930 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:03:38,937 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 22 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 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,964 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 20:03:38,966 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:38,966 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:38,966 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:38,966 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:38,967 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:38,969 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:38,969 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:03:38,972 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:38,977 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:38,978 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 23 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 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:38,981 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:38,981 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:38,981 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:38,981 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] [2020-11-29 20:03:39,006 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:39,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:39,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:39,054 INFO L263 TraceCheckSpWp]: Trace formula consists of 15 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:39,054 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:39,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:39,062 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:39,063 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:39,063 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 20:03:39,064 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 [2020-11-29 20:03:39,064 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8 Second operand 2 states. [2020-11-29 20:03:39,100 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 14 states and 20 transitions. cyclomatic complexity: 8. Second operand 2 states. Result 25 states and 39 transitions. Complement of second has 6 states. [2020-11-29 20:03:39,103 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 [2020-11-29 20:03:39,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 20:03:39,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 20 transitions. [2020-11-29 20:03:39,104 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-29 20:03:39,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:39,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-29 20:03:39,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:39,105 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 20 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-29 20:03:39,105 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:39,106 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 25 states and 39 transitions. [2020-11-29 20:03:39,108 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:39,113 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 25 states to 18 states and 26 transitions. [2020-11-29 20:03:39,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-29 20:03:39,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-29 20:03:39,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 26 transitions. [2020-11-29 20:03:39,120 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:39,120 INFO L691 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-29 20:03:39,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states and 26 transitions. [2020-11-29 20:03:39,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-11-29 20:03:39,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-11-29 20:03:39,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 24 transitions. [2020-11-29 20:03:39,126 INFO L714 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2020-11-29 20:03:39,126 INFO L594 BuchiCegarLoop]: Abstraction has 16 states and 24 transitions. [2020-11-29 20:03:39,126 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-29 20:03:39,127 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 16 states and 24 transitions. [2020-11-29 20:03:39,128 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:39,130 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:39,130 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:39,132 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-29 20:03:39,133 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-29 20:03:39,133 INFO L794 eck$LassoCheckResult]: Stem: 162#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 163#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 168#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 177#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 176#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2020-11-29 20:03:39,135 INFO L796 eck$LassoCheckResult]: Loop: 169#L20-3 main_~x~0 := main_~x~0 - 1; 170#L19-2 main_~y~0 := main_~y~0 - 1; 164#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 165#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 173#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 169#L20-3 [2020-11-29 20:03:39,136 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:39,136 INFO L82 PathProgramCache]: Analyzing trace with hash 29863777, now seen corresponding path program 1 times [2020-11-29 20:03:39,136 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:39,137 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [609710515] [2020-11-29 20:03:39,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:39,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,157 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,173 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:39,176 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 1 times [2020-11-29 20:03:39,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:39,177 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153175541] [2020-11-29 20:03:39,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:39,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:39,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:39,213 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267692, now seen corresponding path program 1 times [2020-11-29 20:03:39,213 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:39,213 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457202452] [2020-11-29 20:03:39,213 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:39,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,233 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:39,260 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:39,263 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:39,309 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:39,309 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:39,309 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:39,309 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:39,309 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:39,309 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:39,309 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:39,309 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:39,310 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2020-11-29 20:03:39,310 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:39,310 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:39,312 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 20:03:39,330 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 20:03:39,336 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 20:03:39,345 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 20:03:39,350 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 20:03:39,482 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:39,482 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:39,488 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:39,489 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 25 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 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:39,530 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:39,530 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:39,677 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:39,679 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:39,679 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:39,679 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:39,679 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:39,679 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:39,679 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:39,679 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:39,679 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:39,679 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration3_Loop [2020-11-29 20:03:39,680 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:39,680 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:39,681 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 20:03:39,712 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 20:03:39,760 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 20:03:39,767 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 20:03:39,785 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 20:03:39,934 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:39,935 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:39,939 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 20:03:39,941 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:39,942 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:39,942 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:39,942 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 20:03:39,942 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:39,948 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 20:03:39,948 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:39,957 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:39,963 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:39,963 INFO L444 ModelExtractionUtils]: 2 out of 5 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:39,967 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:39,967 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:39,968 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:39,968 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,006 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:40,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:40,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:40,036 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:40,037 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:40,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:40,050 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:40,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:40,129 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 20:03:40,130 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:40,130 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11 Second operand 5 states. [2020-11-29 20:03:40,175 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 16 states and 24 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 46 states and 68 transitions. Complement of second has 8 states. [2020-11-29 20:03:40,178 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 20:03:40,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-29 20:03:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 23 transitions. [2020-11-29 20:03:40,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 5 letters. [2020-11-29 20:03:40,179 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:40,179 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 10 letters. Loop has 5 letters. [2020-11-29 20:03:40,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:40,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 23 transitions. Stem has 5 letters. Loop has 10 letters. [2020-11-29 20:03:40,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:40,181 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 68 transitions. [2020-11-29 20:03:40,183 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:40,185 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 32 states and 46 transitions. [2020-11-29 20:03:40,185 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 20:03:40,185 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 15 [2020-11-29 20:03:40,185 INFO L73 IsDeterministic]: Start isDeterministic. Operand 32 states and 46 transitions. [2020-11-29 20:03:40,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:40,186 INFO L691 BuchiCegarLoop]: Abstraction has 32 states and 46 transitions. [2020-11-29 20:03:40,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states and 46 transitions. [2020-11-29 20:03:40,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-11-29 20:03:40,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-29 20:03:40,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 44 transitions. [2020-11-29 20:03:40,196 INFO L714 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-29 20:03:40,196 INFO L594 BuchiCegarLoop]: Abstraction has 30 states and 44 transitions. [2020-11-29 20:03:40,196 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-29 20:03:40,196 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 30 states and 44 transitions. [2020-11-29 20:03:40,203 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-29 20:03:40,203 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:40,203 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:40,204 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1] [2020-11-29 20:03:40,204 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1, 1] [2020-11-29 20:03:40,205 INFO L794 eck$LassoCheckResult]: Stem: 285#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 280#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 281#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 295#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 288#L20-3 main_~x~0 := main_~x~0 - 1; 289#L19-2 main_~y~0 := main_~y~0 - 1; 292#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 305#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 304#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 302#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2020-11-29 20:03:40,205 INFO L796 eck$LassoCheckResult]: Loop: 298#L20-3 main_~x~0 := main_~x~0 - 1; 290#L19-2 main_~y~0 := main_~y~0 - 1; 291#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 299#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 294#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 298#L20-3 [2020-11-29 20:03:40,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:40,206 INFO L82 PathProgramCache]: Analyzing trace with hash -363863338, now seen corresponding path program 2 times [2020-11-29 20:03:40,206 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:40,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [455267447] [2020-11-29 20:03:40,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:40,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-11-29 20:03:40,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [455267447] [2020-11-29 20:03:40,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-29 20:03:40,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-29 20:03:40,272 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010040249] [2020-11-29 20:03:40,275 INFO L799 eck$LassoCheckResult]: stem already infeasible [2020-11-29 20:03:40,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:40,275 INFO L82 PathProgramCache]: Analyzing trace with hash 53544460, now seen corresponding path program 2 times [2020-11-29 20:03:40,276 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:40,276 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2037145172] [2020-11-29 20:03:40,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:40,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:40,281 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:40,285 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:40,287 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:40,337 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:40,338 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:40,338 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:40,338 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:40,338 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:40,338 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,338 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:40,338 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:40,338 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2020-11-29 20:03:40,339 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:40,339 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:40,341 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 20:03:40,346 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 20:03:40,356 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 20:03:40,361 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 20:03:40,366 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 20:03:40,490 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:40,490 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 28 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 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,496 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:40,496 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:40,501 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:40,502 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=-5} Honda state: {ULTIMATE.start_main_#t~nondet1=-5} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:40,552 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:40,552 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:40,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:40,606 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,715 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:40,716 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:40,716 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:40,716 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:40,716 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:40,717 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:40,717 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,717 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:40,717 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:40,717 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration4_Loop [2020-11-29 20:03:40,717 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:40,717 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:40,719 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 20:03:40,724 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 20:03:40,736 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 20:03:40,746 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 20:03:40,764 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 20:03:40,913 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:40,913 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:40,922 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 20:03:40,924 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:40,925 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:40,925 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:40,925 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-29 20:03:40,925 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:40,926 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-29 20:03:40,927 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,932 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:40,977 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 20:03:40,979 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:40,979 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:40,979 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:40,979 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:40,980 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:40,981 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:40,981 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:40,984 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:40,987 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 20:03:40,987 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:40,991 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:40,991 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:40,991 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:40,992 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:41,032 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:41,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:41,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:41,072 INFO L263 TraceCheckSpWp]: Trace formula consists of 24 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:41,073 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:41,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:41,085 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:41,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:41,213 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 20:03:41,214 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:41,214 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-11-29 20:03:41,255 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 30 states and 44 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 80 states and 118 transitions. Complement of second has 7 states. [2020-11-29 20:03:41,258 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 20:03:41,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:41,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 28 transitions. [2020-11-29 20:03:41,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 5 letters. [2020-11-29 20:03:41,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:41,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 15 letters. Loop has 5 letters. [2020-11-29 20:03:41,259 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:41,259 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 28 transitions. Stem has 10 letters. Loop has 10 letters. [2020-11-29 20:03:41,260 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:41,260 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 80 states and 118 transitions. [2020-11-29 20:03:41,264 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 20:03:41,271 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 80 states to 54 states and 78 transitions. [2020-11-29 20:03:41,271 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-29 20:03:41,272 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 16 [2020-11-29 20:03:41,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 54 states and 78 transitions. [2020-11-29 20:03:41,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:41,273 INFO L691 BuchiCegarLoop]: Abstraction has 54 states and 78 transitions. [2020-11-29 20:03:41,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states and 78 transitions. [2020-11-29 20:03:41,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 40. [2020-11-29 20:03:41,278 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:03:41,279 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 60 transitions. [2020-11-29 20:03:41,281 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 60 transitions. [2020-11-29 20:03:41,282 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:41,285 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-29 20:03:41,285 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-29 20:03:41,287 INFO L87 Difference]: Start difference. First operand 40 states and 60 transitions. Second operand 4 states. [2020-11-29 20:03:41,322 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:41,322 INFO L93 Difference]: Finished difference Result 38 states and 53 transitions. [2020-11-29 20:03:41,323 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-29 20:03:41,323 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 53 transitions. [2020-11-29 20:03:41,324 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 20:03:41,325 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 31 states and 46 transitions. [2020-11-29 20:03:41,325 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-29 20:03:41,325 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 10 [2020-11-29 20:03:41,325 INFO L73 IsDeterministic]: Start isDeterministic. Operand 31 states and 46 transitions. [2020-11-29 20:03:41,326 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:41,326 INFO L691 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-11-29 20:03:41,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states and 46 transitions. [2020-11-29 20:03:41,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-11-29 20:03:41,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-11-29 20:03:41,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 46 transitions. [2020-11-29 20:03:41,330 INFO L714 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-11-29 20:03:41,330 INFO L594 BuchiCegarLoop]: Abstraction has 31 states and 46 transitions. [2020-11-29 20:03:41,330 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-29 20:03:41,330 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 46 transitions. [2020-11-29 20:03:41,331 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 4 [2020-11-29 20:03:41,331 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:41,331 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:41,332 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1] [2020-11-29 20:03:41,332 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-29 20:03:41,333 INFO L794 eck$LassoCheckResult]: Stem: 542#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 538#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 539#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 551#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 559#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 546#L20-3 main_~x~0 := main_~x~0 - 1; 547#L19-2 main_~y~0 := main_~y~0 - 1; 567#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 565#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 549#L20-2 [2020-11-29 20:03:41,333 INFO L796 eck$LassoCheckResult]: Loop: 549#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 549#L20-2 [2020-11-29 20:03:41,333 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:41,333 INFO L82 PathProgramCache]: Analyzing trace with hash 1840994920, now seen corresponding path program 3 times [2020-11-29 20:03:41,334 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:41,334 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138272797] [2020-11-29 20:03:41,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:41,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,375 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,377 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:41,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:41,378 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2020-11-29 20:03:41,378 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:41,378 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130787200] [2020-11-29 20:03:41,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:41,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,382 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,384 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,385 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:41,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:41,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1236267694, now seen corresponding path program 4 times [2020-11-29 20:03:41,385 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:41,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1874177159] [2020-11-29 20:03:41,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:41,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,409 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:41,415 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:41,421 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:41,450 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:41,451 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:41,451 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:41,451 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:41,451 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:41,451 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:41,451 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:41,451 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:41,451 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2020-11-29 20:03:41,451 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:41,451 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:41,453 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 20:03:41,463 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 20:03:41,469 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 20:03:41,474 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 20:03:41,564 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:41,564 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:41,574 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:41,574 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 35 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 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:41,606 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:41,606 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:41,856 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:41,858 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:41,858 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:41,858 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:41,858 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:41,859 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:41,859 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:41,859 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:41,859 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:41,859 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration5_Loop [2020-11-29 20:03:41,859 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:41,859 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:41,861 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 20:03:41,874 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 20:03:41,879 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 20:03:41,884 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 20:03:41,948 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:41,948 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:41,952 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 20:03:41,955 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:41,955 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:41,955 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:41,955 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:41,955 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:41,957 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:41,957 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:41,960 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:41,965 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:41,966 INFO L444 ModelExtractionUtils]: 0 out of 4 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:41,973 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:41,974 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:41,974 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:41,974 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~m~0, ULTIMATE.start_main_~y~0) = 2*ULTIMATE.start_main_~m~0 - 2*ULTIMATE.start_main_~y~0 + 1 Supporting invariants [] Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,005 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:42,047 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,058 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,064 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,064 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 20:03:42,065 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 [2020-11-29 20:03:42,065 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-11-29 20:03:42,094 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2020-11-29 20:03:42,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:42,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 20:03:42,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 20:03:42,096 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2020-11-29 20:03:42,096 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:42,096 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:03:42,121 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,130 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,136 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,136 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,136 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 20:03:42,137 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:03:42,137 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-11-29 20:03:42,154 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 34 states and 50 transitions. Complement of second has 5 states. [2020-11-29 20:03:42,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:42,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 20:03:42,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-29 20:03:42,155 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 9 letters. Loop has 1 letters. [2020-11-29 20:03:42,155 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:42,155 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:03:42,178 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,196 INFO L263 TraceCheckSpWp]: Trace formula consists of 23 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,196 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,208 WARN L261 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,208 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 20:03:42,209 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-29 20:03:42,209 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21 Second operand 2 states. [2020-11-29 20:03:42,222 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 46 transitions. cyclomatic complexity: 21. Second operand 2 states. Result 38 states and 54 transitions. Complement of second has 4 states. [2020-11-29 20:03:42,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:42,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-29 20:03:42,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 12 transitions. [2020-11-29 20:03:42,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 1 letters. [2020-11-29 20:03:42,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:42,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 10 letters. Loop has 1 letters. [2020-11-29 20:03:42,223 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:42,223 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 12 transitions. Stem has 9 letters. Loop has 2 letters. [2020-11-29 20:03:42,224 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:42,224 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 38 states and 54 transitions. [2020-11-29 20:03:42,225 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:42,226 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 38 states to 27 states and 37 transitions. [2020-11-29 20:03:42,226 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:03:42,226 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:03:42,226 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 37 transitions. [2020-11-29 20:03:42,226 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:42,226 INFO L691 BuchiCegarLoop]: Abstraction has 27 states and 37 transitions. [2020-11-29 20:03:42,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states and 37 transitions. [2020-11-29 20:03:42,228 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 22. [2020-11-29 20:03:42,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-11-29 20:03:42,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 29 transitions. [2020-11-29 20:03:42,228 INFO L714 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-29 20:03:42,228 INFO L594 BuchiCegarLoop]: Abstraction has 22 states and 29 transitions. [2020-11-29 20:03:42,229 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-29 20:03:42,229 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 22 states and 29 transitions. [2020-11-29 20:03:42,229 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:42,229 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:42,229 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:42,230 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [3, 2, 2, 2, 2, 2, 1, 1] [2020-11-29 20:03:42,230 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:03:42,230 INFO L794 eck$LassoCheckResult]: Stem: 798#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 799#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 806#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 803#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 804#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 802#L20-3 main_~x~0 := main_~x~0 - 1; 801#L19-2 main_~y~0 := main_~y~0 - 1; 796#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 797#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 807#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 810#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 813#L20-3 main_~x~0 := main_~x~0 - 1; 812#L19-2 main_~y~0 := main_~y~0 - 1; 811#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 808#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2020-11-29 20:03:42,231 INFO L796 eck$LassoCheckResult]: Loop: 800#L19-2 main_~y~0 := main_~y~0 - 1; 794#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 795#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 800#L19-2 [2020-11-29 20:03:42,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,231 INFO L82 PathProgramCache]: Analyzing trace with hash -1970756676, now seen corresponding path program 1 times [2020-11-29 20:03:42,231 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:42,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [818917857] [2020-11-29 20:03:42,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:42,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:42,241 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:42,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:42,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:42,252 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:42,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,253 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 2 times [2020-11-29 20:03:42,253 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:42,253 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2146106058] [2020-11-29 20:03:42,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:42,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:42,256 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:42,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:42,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:42,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:42,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:42,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1390830772, now seen corresponding path program 2 times [2020-11-29 20:03:42,260 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:42,260 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234279832] [2020-11-29 20:03:42,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:42,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:42,319 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 20:03:42,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234279832] [2020-11-29 20:03:42,319 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192929090] [2020-11-29 20:03:42,320 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 38 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:03:42,362 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-11-29 20:03:42,362 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:03:42,363 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 7 conjunts are in the unsatisfiable core [2020-11-29 20:03:42,365 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:42,401 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-11-29 20:03:42,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:03:42,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 4 [2020-11-29 20:03:42,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1341728593] [2020-11-29 20:03:42,435 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:42,435 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:42,435 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:42,435 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:42,435 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:42,435 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,435 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:42,435 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:42,435 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2020-11-29 20:03:42,435 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:42,436 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:42,438 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 20:03:42,453 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 20:03:42,459 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 20:03:42,464 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 20:03:42,477 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 20:03:42,542 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:42,543 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 39 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 39 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,548 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:42,548 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:42,552 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:42,553 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_11=1} Honda state: {v_rep~unnamed0~0~true_11=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 40 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 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:42,605 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:42,624 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:42,624 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_11=0} Honda state: {v_rep~unnamed0~0~false_11=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 41 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 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:42,651 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:42,654 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:42,654 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet1=0} Honda state: {ULTIMATE.start_main_#t~nondet1=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 42 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 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:42,680 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 43 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 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,716 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:42,717 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:42,821 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:42,823 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:42,823 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:42,823 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:42,823 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:42,823 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:42,824 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,824 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:42,824 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:42,824 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration6_Loop [2020-11-29 20:03:42,824 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:42,824 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:42,825 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 20:03:42,832 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 20:03:42,838 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 20:03:42,847 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 20:03:42,852 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 20:03:42,933 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:42,933 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:42,944 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 20:03:42,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:42,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:42,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:42,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:42,950 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:42,950 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:42,955 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:43,006 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 20:03:43,008 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:43,008 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:43,008 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:43,008 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:43,008 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:43,010 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:43,010 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,012 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 46 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 46 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,059 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 20:03:43,061 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:43,061 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:43,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:43,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:43,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:43,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:43,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:03:43,065 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:43,069 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:43,069 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:43,072 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:43,073 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:43,073 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:43,073 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,100 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:43,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:43,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:43,185 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:43,186 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:43,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:43,199 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:43,199 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:43,227 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 20:03:43,228 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:43,228 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-29 20:03:43,265 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 22 states and 29 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 63 states and 85 transitions. Complement of second has 7 states. [2020-11-29 20:03:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:43,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:43,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 20:03:43,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 3 letters. [2020-11-29 20:03:43,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:43,269 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 18 letters. Loop has 3 letters. [2020-11-29 20:03:43,269 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:43,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 15 letters. Loop has 6 letters. [2020-11-29 20:03:43,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:43,270 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2020-11-29 20:03:43,272 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:43,273 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 44 states and 59 transitions. [2020-11-29 20:03:43,273 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:03:43,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:03:43,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 59 transitions. [2020-11-29 20:03:43,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:43,273 INFO L691 BuchiCegarLoop]: Abstraction has 44 states and 59 transitions. [2020-11-29 20:03:43,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states and 59 transitions. [2020-11-29 20:03:43,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 33. [2020-11-29 20:03:43,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-29 20:03:43,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-11-29 20:03:43,277 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-11-29 20:03:43,278 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:43,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-29 20:03:43,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2020-11-29 20:03:43,279 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 5 states. [2020-11-29 20:03:43,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:43,331 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2020-11-29 20:03:43,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-29 20:03:43,333 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 54 states and 68 transitions. [2020-11-29 20:03:43,337 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:43,338 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 54 states to 45 states and 58 transitions. [2020-11-29 20:03:43,338 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:03:43,338 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:03:43,338 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 58 transitions. [2020-11-29 20:03:43,338 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:43,338 INFO L691 BuchiCegarLoop]: Abstraction has 45 states and 58 transitions. [2020-11-29 20:03:43,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 58 transitions. [2020-11-29 20:03:43,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 40. [2020-11-29 20:03:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-29 20:03:43,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 53 transitions. [2020-11-29 20:03:43,342 INFO L714 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-11-29 20:03:43,343 INFO L594 BuchiCegarLoop]: Abstraction has 40 states and 53 transitions. [2020-11-29 20:03:43,343 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-29 20:03:43,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 53 transitions. [2020-11-29 20:03:43,343 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:43,343 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:43,343 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:43,344 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [4, 3, 3, 2, 2, 2, 2, 1] [2020-11-29 20:03:43,344 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:03:43,344 INFO L794 eck$LassoCheckResult]: Stem: 1103#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1104#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1112#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1108#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1109#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1133#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1107#L20-3 main_~x~0 := main_~x~0 - 1; 1106#L19-2 main_~y~0 := main_~y~0 - 1; 1101#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1102#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1124#L19-2 main_~y~0 := main_~y~0 - 1; 1127#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1123#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1121#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1117#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1120#L20-3 main_~x~0 := main_~x~0 - 1; 1119#L19-2 main_~y~0 := main_~y~0 - 1; 1118#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1115#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2020-11-29 20:03:43,344 INFO L796 eck$LassoCheckResult]: Loop: 1105#L19-2 main_~y~0 := main_~y~0 - 1; 1099#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1100#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1105#L19-2 [2020-11-29 20:03:43,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:43,345 INFO L82 PathProgramCache]: Analyzing trace with hash 715204654, now seen corresponding path program 3 times [2020-11-29 20:03:43,345 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:43,345 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1214880596] [2020-11-29 20:03:43,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:43,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:43,354 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:43,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:43,363 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:43,371 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:43,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:43,371 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 3 times [2020-11-29 20:03:43,372 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:43,372 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [883361591] [2020-11-29 20:03:43,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:43,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:43,376 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:43,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:43,381 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:43,387 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:43,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:43,389 INFO L82 PathProgramCache]: Analyzing trace with hash -670878974, now seen corresponding path program 4 times [2020-11-29 20:03:43,390 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:43,390 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [726702776] [2020-11-29 20:03:43,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:43,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:43,491 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 20:03:43,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [726702776] [2020-11-29 20:03:43,492 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1381977449] [2020-11-29 20:03:43,492 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 48 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-29 20:03:43,531 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2020-11-29 20:03:43,531 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-29 20:03:43,532 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 9 conjunts are in the unsatisfiable core [2020-11-29 20:03:43,534 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:43,583 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 21 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-11-29 20:03:43,584 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-29 20:03:43,584 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 5 [2020-11-29 20:03:43,584 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200029337] [2020-11-29 20:03:43,608 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:43,609 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:43,609 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:43,609 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:43,609 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:43,609 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,609 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:43,609 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:43,609 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2020-11-29 20:03:43,609 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:43,609 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:43,610 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 20:03:43,615 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 20:03:43,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-29 20:03:43,629 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 20:03:43,634 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 20:03:43,712 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:43,712 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:43,729 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:43,729 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,739 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:43,739 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_13=1} Honda state: {v_rep~unnamed0~0~true_13=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:43,782 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:43,783 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 51 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 51 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,818 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:43,818 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:43,890 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:43,891 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:43,891 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:43,891 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:43,891 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:43,891 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:43,891 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:43,891 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:43,891 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:43,891 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration7_Loop [2020-11-29 20:03:43,891 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:43,892 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:43,892 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 20:03:43,915 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 20:03:43,920 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 20:03:43,936 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 20:03:43,941 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 20:03:44,001 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:44,002 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 52 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 52 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,010 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 20:03:44,011 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:44,011 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:44,012 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:44,012 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:44,012 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:44,013 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:44,013 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:03:44,014 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:44,016 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-29 20:03:44,016 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 53 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 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,019 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:44,019 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:44,019 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:44,019 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-29 20:03:44,043 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:44,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:44,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:44,073 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:44,075 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:44,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:44,116 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:44,119 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:44,215 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 20:03:44,215 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:44,216 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-11-29 20:03:44,249 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 46 states and 61 transitions. Complement of second has 7 states. [2020-11-29 20:03:44,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:44,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:44,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 20:03:44,253 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-29 20:03:44,254 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:44,254 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:03:44,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:44,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:44,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:44,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:44,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:44,300 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:44,301 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:44,346 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 20:03:44,346 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:44,347 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20 Second operand 4 states. [2020-11-29 20:03:44,398 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 53 transitions. cyclomatic complexity: 20. Second operand 4 states. Result 74 states and 97 transitions. Complement of second has 9 states. [2020-11-29 20:03:44,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:44,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:44,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-11-29 20:03:44,403 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 3 letters. [2020-11-29 20:03:44,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:44,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 22 letters. Loop has 3 letters. [2020-11-29 20:03:44,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:44,404 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 19 letters. Loop has 6 letters. [2020-11-29 20:03:44,404 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:44,404 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 97 transitions. [2020-11-29 20:03:44,405 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:44,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 68 states and 89 transitions. [2020-11-29 20:03:44,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:03:44,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:03:44,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 89 transitions. [2020-11-29 20:03:44,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:44,408 INFO L691 BuchiCegarLoop]: Abstraction has 68 states and 89 transitions. [2020-11-29 20:03:44,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states and 89 transitions. [2020-11-29 20:03:44,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 60. [2020-11-29 20:03:44,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-11-29 20:03:44,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 80 transitions. [2020-11-29 20:03:44,413 INFO L714 BuchiCegarLoop]: Abstraction has 60 states and 80 transitions. [2020-11-29 20:03:44,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-29 20:03:44,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-11-29 20:03:44,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2020-11-29 20:03:44,415 INFO L87 Difference]: Start difference. First operand 60 states and 80 transitions. Second operand 6 states. [2020-11-29 20:03:44,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-29 20:03:44,459 INFO L93 Difference]: Finished difference Result 149 states and 188 transitions. [2020-11-29 20:03:44,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-11-29 20:03:44,460 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 149 states and 188 transitions. [2020-11-29 20:03:44,464 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:44,465 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 149 states to 107 states and 137 transitions. [2020-11-29 20:03:44,465 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 7 [2020-11-29 20:03:44,466 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-29 20:03:44,466 INFO L73 IsDeterministic]: Start isDeterministic. Operand 107 states and 137 transitions. [2020-11-29 20:03:44,466 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-29 20:03:44,466 INFO L691 BuchiCegarLoop]: Abstraction has 107 states and 137 transitions. [2020-11-29 20:03:44,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states and 137 transitions. [2020-11-29 20:03:44,473 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 83. [2020-11-29 20:03:44,473 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-11-29 20:03:44,474 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2020-11-29 20:03:44,475 INFO L714 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2020-11-29 20:03:44,475 INFO L594 BuchiCegarLoop]: Abstraction has 83 states and 111 transitions. [2020-11-29 20:03:44,475 INFO L427 BuchiCegarLoop]: ======== Iteration 8============ [2020-11-29 20:03:44,475 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 83 states and 111 transitions. [2020-11-29 20:03:44,476 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-29 20:03:44,476 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-29 20:03:44,476 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-29 20:03:44,477 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [5, 4, 3, 2, 2, 2, 2, 1] [2020-11-29 20:03:44,478 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-29 20:03:44,478 INFO L794 eck$LassoCheckResult]: Stem: 1705#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~m~0;havoc main_~x~0;havoc main_~y~0;havoc main_~m~0;main_~y~0 := 0;main_~m~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~x~0 := main_~m~0; 1706#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1719#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1715#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1716#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1754#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1753#L20-3 main_~x~0 := main_~x~0 - 1; 1752#L19-2 main_~y~0 := main_~y~0 - 1; 1750#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1751#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1742#L19-2 main_~y~0 := main_~y~0 - 1; 1741#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1738#L19 assume 0 != main_#t~nondet1;havoc main_#t~nondet1; 1735#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1732#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1734#L20-2 assume !!(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := 1 + main_~y~0; 1724#L20-2 assume !(main_~y~0 <= main_~m~0 && 0 != main_#t~nondet2);havoc main_#t~nondet2; 1727#L20-3 main_~x~0 := main_~x~0 - 1; 1726#L19-2 main_~y~0 := main_~y~0 - 1; 1725#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1722#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2020-11-29 20:03:44,478 INFO L796 eck$LassoCheckResult]: Loop: 1713#L19-2 main_~y~0 := main_~y~0 - 1; 1707#L18-2 assume !!(main_~x~0 >= 0 && main_~y~0 >= 0); 1708#L19 assume !(0 != main_#t~nondet1);havoc main_#t~nondet1; 1713#L19-2 [2020-11-29 20:03:44,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:44,479 INFO L82 PathProgramCache]: Analyzing trace with hash 1768639598, now seen corresponding path program 5 times [2020-11-29 20:03:44,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:44,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1822487150] [2020-11-29 20:03:44,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:44,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,500 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,503 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:44,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:44,504 INFO L82 PathProgramCache]: Analyzing trace with hash 58959, now seen corresponding path program 4 times [2020-11-29 20:03:44,504 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:44,504 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [822737788] [2020-11-29 20:03:44,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:44,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,507 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,509 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,509 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:44,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:44,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1116494142, now seen corresponding path program 6 times [2020-11-29 20:03:44,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-29 20:03:44,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625755179] [2020-11-29 20:03:44,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-29 20:03:44,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-29 20:03:44,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-29 20:03:44,533 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-29 20:03:44,589 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:44,589 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:44,589 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:44,589 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:44,589 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-29 20:03:44,589 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,590 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:44,590 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:44,590 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2020-11-29 20:03:44,590 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:44,590 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:44,591 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 20:03:44,597 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 20:03:44,607 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 20:03:44,611 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 20:03:44,616 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 20:03:44,701 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:44,701 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 54 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 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,703 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:44,703 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:44,707 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-29 20:03:44,707 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_15=1} Honda state: {v_rep~unnamed0~0~true_15=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 55 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 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,734 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-29 20:03:44,734 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 56 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 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,766 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-29 20:03:44,766 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-29 20:03:44,834 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-29 20:03:44,835 INFO L210 LassoAnalysis]: Preferences: [2020-11-29 20:03:44,835 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-29 20:03:44,835 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-29 20:03:44,835 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-29 20:03:44,836 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-29 20:03:44,836 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,836 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-29 20:03:44,836 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-29 20:03:44,836 INFO L133 ssoRankerPreferences]: Filename of dumped script: AliasDarteFeautrierGonnord-SAS2010-Fig1.c_Iteration8_Loop [2020-11-29 20:03:44,836 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-29 20:03:44,836 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-29 20:03:44,837 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 20:03:44,840 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 20:03:44,848 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 20:03:44,851 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 20:03:44,856 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 20:03:44,933 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-29 20:03:44,934 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:44,951 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 20:03:44,953 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:44,954 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:44,954 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:44,954 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:44,957 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-29 20:03:44,957 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,962 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 58 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 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:44,991 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 20:03:44,993 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-29 20:03:44,993 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-29 20:03:44,993 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-29 20:03:44,993 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-29 20:03:44,993 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-29 20:03:44,994 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-29 20:03:44,994 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-29 20:03:44,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-29 20:03:44,999 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-29 20:03:44,999 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_4df5bb81-99e3-4b31-a521-bc267bdf67d2/bin/uautomizer/z3 Starting monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-29 20:03:45,006 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-29 20:03:45,006 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-29 20:03:45,006 INFO L510 LassoAnalysis]: Proved termination. [2020-11-29 20:03:45,007 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 59 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-29 20:03:45,031 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-29 20:03:45,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:45,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,061 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,062 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,080 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,114 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 20:03:45,114 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:45,114 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-11-29 20:03:45,140 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 101 states and 134 transitions. Complement of second has 7 states. [2020-11-29 20:03:45,140 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:45,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:45,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-29 20:03:45,141 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 20:03:45,141 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:45,141 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:03:45,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:45,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,183 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,205 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 20:03:45,205 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:45,206 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-11-29 20:03:45,288 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 128 states and 166 transitions. Complement of second has 9 states. [2020-11-29 20:03:45,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 5 states 1 stem states 3 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:45,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:45,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 19 transitions. [2020-11-29 20:03:45,289 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 19 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 20:03:45,290 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:45,290 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-29 20:03:45,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-29 20:03:45,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,330 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,331 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-29 20:03:45,344 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-29 20:03:45,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-29 20:03:45,372 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 20:03:45,373 INFO L152 lantAutomatonBouncer]: Defining Buchi interpolant automaton with scrooge nondeterminism in stemwith honda bouncer for stem and without honda bouncer for loop.1 stem predicates 3 loop predicates [2020-11-29 20:03:45,374 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39 Second operand 4 states. [2020-11-29 20:03:45,399 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 83 states and 111 transitions. cyclomatic complexity: 39. Second operand 4 states. Result 139 states and 187 transitions. Complement of second has 8 states. [2020-11-29 20:03:45,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 2 non-accepting loop states 1 accepting loop states [2020-11-29 20:03:45,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-29 20:03:45,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-29 20:03:45,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 3 letters. [2020-11-29 20:03:45,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:45,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 24 letters. Loop has 3 letters. [2020-11-29 20:03:45,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:45,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 21 letters. Loop has 6 letters. [2020-11-29 20:03:45,403 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-29 20:03:45,403 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 139 states and 187 transitions. [2020-11-29 20:03:45,411 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:03:45,411 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 139 states to 0 states and 0 transitions. [2020-11-29 20:03:45,411 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-29 20:03:45,412 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-29 20:03:45,412 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-29 20:03:45,412 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-29 20:03:45,412 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:03:45,412 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:03:45,412 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-29 20:03:45,413 INFO L427 BuchiCegarLoop]: ======== Iteration 9============ [2020-11-29 20:03:45,413 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-29 20:03:45,413 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-29 20:03:45,413 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-29 20:03:45,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 29.11 08:03:45 BoogieIcfgContainer [2020-11-29 20:03:45,419 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-29 20:03:45,419 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-29 20:03:45,419 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-29 20:03:45,420 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-29 20:03:45,420 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.11 08:03:35" (3/4) ... [2020-11-29 20:03:45,423 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-29 20:03:45,423 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-29 20:03:45,424 INFO L168 Benchmark]: Toolchain (without parser) took 10392.56 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 105.8 MB in the beginning and 155.6 MB in the end (delta: -49.8 MB). Peak memory consumption was 10.7 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:45,424 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 45.6 MB in the beginning and 45.6 MB in the end (delta: 42.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:45,425 INFO L168 Benchmark]: CACSL2BoogieTranslator took 300.68 ms. Allocated memory is still 136.3 MB. Free memory was 105.8 MB in the beginning and 112.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:45,425 INFO L168 Benchmark]: Boogie Procedure Inliner took 40.39 ms. Allocated memory is still 136.3 MB. Free memory was 112.9 MB in the beginning and 111.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:45,426 INFO L168 Benchmark]: Boogie Preprocessor took 24.29 ms. Allocated memory is still 136.3 MB. Free memory was 111.5 MB in the beginning and 110.7 MB in the end (delta: 850.8 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:45,426 INFO L168 Benchmark]: RCFGBuilder took 318.15 ms. Allocated memory is still 136.3 MB. Free memory was 110.7 MB in the beginning and 101.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:45,427 INFO L168 Benchmark]: BuchiAutomizer took 9694.42 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 101.8 MB in the beginning and 156.7 MB in the end (delta: -54.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. [2020-11-29 20:03:45,428 INFO L168 Benchmark]: Witness Printer took 3.46 ms. Allocated memory is still 197.1 MB. Free memory was 156.7 MB in the beginning and 155.6 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-29 20:03:45,431 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 88.1 MB. Free memory was 45.6 MB in the beginning and 45.6 MB in the end (delta: 42.5 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 300.68 ms. Allocated memory is still 136.3 MB. Free memory was 105.8 MB in the beginning and 112.9 MB in the end (delta: -7.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 40.39 ms. Allocated memory is still 136.3 MB. Free memory was 112.9 MB in the beginning and 111.5 MB in the end (delta: 1.4 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 24.29 ms. Allocated memory is still 136.3 MB. Free memory was 111.5 MB in the beginning and 110.7 MB in the end (delta: 850.8 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 318.15 ms. Allocated memory is still 136.3 MB. Free memory was 110.7 MB in the beginning and 101.8 MB in the end (delta: 8.8 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9694.42 ms. Allocated memory was 136.3 MB in the beginning and 197.1 MB in the end (delta: 60.8 MB). Free memory was 101.8 MB in the beginning and 156.7 MB in the end (delta: -54.8 MB). Peak memory consumption was 7.4 MB. Max. memory is 16.1 GB. * Witness Printer took 3.46 ms. Allocated memory is still 197.1 MB. Free memory was 156.7 MB in the beginning and 155.6 MB in the end (delta: 1.0 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 11 terminating modules (3 trivial, 6 deterministic, 2 nondeterministic). One deterministic module has affine ranking function 2 * y + 1 and consists of 5 locations. One deterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One deterministic module has affine ranking function x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function y and consists of 5 locations. One nondeterministic module has affine ranking function 2 * m + -2 * y + 1 and consists of 3 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. 3 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.5s and 9 iterations. TraceHistogramMax:5. Analysis of lassos took 7.3s. Construction of modules took 0.3s. Büchi inclusion checks took 1.5s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 10. Automata minimization 0.0s AutomataMinimizationTime, 10 MinimizatonAttempts, 71 StatesRemovedByMinimization, 8 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 83 states and ocurred in iteration 7. Nontrivial modules had stage [5, 1, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 137 SDtfs, 155 SDslu, 81 SDs, 0 SdLazy, 157 SolverSat, 36 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT2 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax168 hnf99 lsp37 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq159 hnf94 smp100 dnf112 smp100 tf111 neg100 sie101 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 36ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 13 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 8 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.5s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...