./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c -s /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 c0afa1d46bded0eb2bd485bf4790c0d11468ed7a ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-a4ecdab [2020-11-28 03:07:46,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:07:46,231 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:07:46,304 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:07:46,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:07:46,318 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:07:46,332 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:07:46,335 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:07:46,338 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:07:46,339 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:07:46,341 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:07:46,342 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:07:46,343 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:07:46,344 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:07:46,346 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:07:46,348 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:07:46,349 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:07:46,350 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:07:46,353 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:07:46,367 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:07:46,370 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:07:46,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:07:46,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:07:46,377 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:07:46,388 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:07:46,389 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:07:46,389 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:07:46,392 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:07:46,393 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:07:46,394 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:07:46,395 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:07:46,397 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:07:46,399 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:07:46,401 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:07:46,402 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:07:46,403 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:07:46,404 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:07:46,404 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:07:46,405 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:07:46,406 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:07:46,407 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:07:46,413 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:07:46,477 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:07:46,477 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:07:46,479 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:07:46,479 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:07:46,479 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:07:46,480 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:07:46,480 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:07:46,480 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:07:46,480 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:07:46,480 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:07:46,481 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:07:46,481 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:07:46,481 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:07:46,481 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:07:46,482 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:07:46,482 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:07:46,482 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:07:46,482 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:07:46,482 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:07:46,483 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:07:46,483 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:07:46,483 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:07:46,483 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:07:46,484 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:07:46,484 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:07:46,484 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:07:46,484 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:07:46,485 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:07:46,485 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:07:46,486 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:07:46,486 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c0afa1d46bded0eb2bd485bf4790c0d11468ed7a [2020-11-28 03:07:46,845 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:07:46,899 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:07:46,904 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:07:46,907 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:07:46,908 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:07:46,909 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-11-28 03:07:47,025 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/data/3ff823b2f/c0c8e12c8fd04d1b9251959c68d02dcd/FLAGb884db015 [2020-11-28 03:07:47,525 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:07:47,526 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/sv-benchmarks/c/termination-crafted-lit/LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-11-28 03:07:47,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/data/3ff823b2f/c0c8e12c8fd04d1b9251959c68d02dcd/FLAGb884db015 [2020-11-28 03:07:47,907 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/data/3ff823b2f/c0c8e12c8fd04d1b9251959c68d02dcd [2020-11-28 03:07:47,909 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:07:47,911 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:07:47,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:47,926 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:07:47,930 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:07:47,931 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:47" (1/1) ... [2020-11-28 03:07:47,933 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@532a8b6b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:47, skipping insertion in model container [2020-11-28 03:07:47,934 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:07:47" (1/1) ... [2020-11-28 03:07:47,951 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:07:47,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:07:48,121 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:48,125 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:07:48,175 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:07:48,194 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:07:48,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48 WrapperNode [2020-11-28 03:07:48,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:07:48,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:48,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:07:48,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:07:48,206 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,212 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,231 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:07:48,233 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:07:48,233 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:07:48,233 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:07:48,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,244 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,244 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,247 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,252 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,253 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... [2020-11-28 03:07:48,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:07:48,256 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:07:48,256 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:07:48,256 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:07:48,260 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:48,351 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:07:48,351 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:07:48,531 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:07:48,532 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-11-28 03:07:48,533 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:48 BoogieIcfgContainer [2020-11-28 03:07:48,533 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:07:48,535 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:07:48,535 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:07:48,538 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:07:48,539 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:07:48,539 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:07:47" (1/3) ... [2020-11-28 03:07:48,540 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@462aa3f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:07:48, skipping insertion in model container [2020-11-28 03:07:48,540 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:07:48,541 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:07:48" (2/3) ... [2020-11-28 03:07:48,542 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@462aa3f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:07:48, skipping insertion in model container [2020-11-28 03:07:48,542 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:07:48,542 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:48" (3/3) ... [2020-11-28 03:07:48,544 INFO L373 chiAutomizerObserver]: Analyzing ICFG LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c [2020-11-28 03:07:48,601 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:07:48,601 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:07:48,602 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:07:48,602 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:07:48,602 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:07:48,602 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:07:48,602 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:07:48,603 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:07:48,617 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 03:07:48,639 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:48,639 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:48,639 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:48,646 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:07:48,647 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:07:48,647 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:07:48,647 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 03:07:48,648 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:48,649 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:48,649 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:48,649 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:07:48,649 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:07:48,658 INFO L794 eck$LassoCheckResult]: Stem: 6#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 4#L21true assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 10#L22-2true [2020-11-28 03:07:48,658 INFO L796 eck$LassoCheckResult]: Loop: 10#L22-2true assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 7#L24-2true assume !(main_~y~0 < main_~z~0); 5#L24-3true main_~y~0 := main_~x~0 + main_~y~0; 10#L22-2true [2020-11-28 03:07:48,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:48,665 INFO L82 PathProgramCache]: Analyzing trace with hash 996, now seen corresponding path program 1 times [2020-11-28 03:07:48,676 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:48,676 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [531000610] [2020-11-28 03:07:48,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:48,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,770 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,780 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,799 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:48,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:48,801 INFO L82 PathProgramCache]: Analyzing trace with hash 42930, now seen corresponding path program 1 times [2020-11-28 03:07:48,802 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:48,802 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219384733] [2020-11-28 03:07:48,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:48,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,817 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,825 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,828 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:48,846 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:48,847 INFO L82 PathProgramCache]: Analyzing trace with hash 29684975, now seen corresponding path program 1 times [2020-11-28 03:07:48,847 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:48,848 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113266645] [2020-11-28 03:07:48,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:48,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,866 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:48,894 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:48,897 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:49,067 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:49,069 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:49,069 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:49,069 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:49,069 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:49,070 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,070 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:49,070 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:49,070 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2020-11-28 03:07:49,071 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:49,071 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:49,103 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,115 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,125 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,278 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:49,279 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:07:49,290 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:49,291 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,308 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:49,308 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:49,351 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:49,352 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:49,359 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:49,359 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:07:49,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:49,410 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,472 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:49,472 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:49,705 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:49,711 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:49,711 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:49,711 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:49,711 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:49,711 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:49,712 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,712 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:49,712 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:49,712 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration1_Loop [2020-11-28 03:07:49,712 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:49,712 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:49,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,734 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:49,872 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:49,876 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,884 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:49,887 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:49,887 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:49,887 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:49,887 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:49,898 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:49,898 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:49,907 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:49,956 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:49,959 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:49,959 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:49,959 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:49,959 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:49,967 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:49,968 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:49,978 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,017 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:50,019 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:50,019 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:50,019 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:50,019 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:50,020 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:50,023 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:50,023 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:50,031 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 03:07:50,070 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,080 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:50,082 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:50,082 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:50,082 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:50,082 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:50,089 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 03:07:50,089 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 03:07:50,099 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,128 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:50,129 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:50,130 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:50,130 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:50,130 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:50,140 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 03:07:50,140 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 03:07:50,148 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,185 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:50,190 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:50,191 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:50,191 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:50,191 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:50,191 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:50,208 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-28 03:07:50,208 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:50,213 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:50,230 INFO L443 ModelExtractionUtils]: Simplification made 5 calls to the SMT solver. [2020-11-28 03:07:50,230 INFO L444 ModelExtractionUtils]: 4 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:07:50,235 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:50,236 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:50,236 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:50,237 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,268 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:50,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:50,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:50,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 12 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:50,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:50,355 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:07:50,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:50,416 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:50,426 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:50,444 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 4 disjuncts [2020-11-28 03:07:50,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:50,521 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 [2020-11-28 03:07:50,522 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 3 states. [2020-11-28 03:07:50,612 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 3 states. Result 34 states and 47 transitions. Complement of second has 8 states. [2020-11-28 03:07:50,614 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 [2020-11-28 03:07:50,616 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:07:50,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 25 transitions. [2020-11-28 03:07:50,620 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-28 03:07:50,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:50,621 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:07:50,621 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:50,622 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 25 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-28 03:07:50,622 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:50,623 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2020-11-28 03:07:50,634 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:50,638 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 10 states and 14 transitions. [2020-11-28 03:07:50,641 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 03:07:50,641 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 03:07:50,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 10 states and 14 transitions. [2020-11-28 03:07:50,643 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:50,643 INFO L691 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-11-28 03:07:50,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states and 14 transitions. [2020-11-28 03:07:50,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2020-11-28 03:07:50,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2020-11-28 03:07:50,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 14 transitions. [2020-11-28 03:07:50,672 INFO L714 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-11-28 03:07:50,672 INFO L594 BuchiCegarLoop]: Abstraction has 10 states and 14 transitions. [2020-11-28 03:07:50,672 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:07:50,673 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 10 states and 14 transitions. [2020-11-28 03:07:50,673 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:50,673 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:50,673 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:50,674 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:07:50,674 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:07:50,674 INFO L794 eck$LassoCheckResult]: Stem: 95#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 93#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 94#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 96#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2020-11-28 03:07:50,674 INFO L796 eck$LassoCheckResult]: Loop: 97#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 97#L24-2 [2020-11-28 03:07:50,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:50,675 INFO L82 PathProgramCache]: Analyzing trace with hash 957581, now seen corresponding path program 1 times [2020-11-28 03:07:50,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:50,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365866520] [2020-11-28 03:07:50,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:50,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,701 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,703 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:50,704 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:50,704 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 1 times [2020-11-28 03:07:50,705 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:50,705 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2025919342] [2020-11-28 03:07:50,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:50,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,710 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,714 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,716 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:50,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:50,717 INFO L82 PathProgramCache]: Analyzing trace with hash 29685033, now seen corresponding path program 2 times [2020-11-28 03:07:50,717 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:50,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145612198] [2020-11-28 03:07:50,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,730 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:50,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:50,744 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:50,762 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:50,762 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:50,762 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:50,762 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:50,762 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:50,762 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:50,762 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:50,762 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:50,762 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2020-11-28 03:07:50,763 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:50,763 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:50,765 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:50,769 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:50,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:50,832 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:50,908 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:50,908 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:07:50,948 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:50,948 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:50,973 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:50,973 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: [] Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,043 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:51,044 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:51,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:51,052 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,080 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:51,081 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,119 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:51,119 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:51,305 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:51,307 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:51,307 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:51,307 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:51,308 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:51,308 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:51,308 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,308 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:51,308 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:51,308 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration2_Loop [2020-11-28 03:07:51,308 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:51,308 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:51,310 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,340 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,345 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,359 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,454 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:51,455 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:51,464 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:51,467 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:51,467 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:51,467 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:51,467 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:51,472 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:51,472 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,479 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:51,528 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:51,530 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:51,531 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:51,531 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:51,531 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:51,534 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:51,535 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,542 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:51,586 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:51,590 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:51,590 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:51,590 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:51,590 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:51,591 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:51,593 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:51,593 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:51,597 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:51,603 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:07:51,603 INFO L444 ModelExtractionUtils]: 1 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:51,618 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:51,619 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:51,619 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:51,619 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0, ULTIMATE.start_main_~z~0) = -1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,662 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:51,690 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:51,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:51,703 INFO L263 TraceCheckSpWp]: Trace formula consists of 20 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:51,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:51,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:51,712 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:07:51,713 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:51,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:51,714 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:07:51,714 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6 Second operand 2 states. [2020-11-28 03:07:51,733 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 10 states and 14 transitions. cyclomatic complexity: 6. Second operand 2 states. Result 17 states and 28 transitions. Complement of second has 6 states. [2020-11-28 03:07:51,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:07:51,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:07:51,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:07:51,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 1 letters. [2020-11-28 03:07:51,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:51,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 5 letters. Loop has 1 letters. [2020-11-28 03:07:51,737 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:51,737 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 2 letters. [2020-11-28 03:07:51,738 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:51,738 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 17 states and 28 transitions. [2020-11-28 03:07:51,739 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:51,740 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 17 states to 13 states and 19 transitions. [2020-11-28 03:07:51,741 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 03:07:51,741 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 9 [2020-11-28 03:07:51,741 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 19 transitions. [2020-11-28 03:07:51,741 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:51,742 INFO L691 BuchiCegarLoop]: Abstraction has 13 states and 19 transitions. [2020-11-28 03:07:51,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states and 19 transitions. [2020-11-28 03:07:51,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 12. [2020-11-28 03:07:51,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-11-28 03:07:51,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 18 transitions. [2020-11-28 03:07:51,744 INFO L714 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-28 03:07:51,744 INFO L594 BuchiCegarLoop]: Abstraction has 12 states and 18 transitions. [2020-11-28 03:07:51,744 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:07:51,745 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 12 states and 18 transitions. [2020-11-28 03:07:51,745 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:51,746 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:51,746 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:51,748 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1] [2020-11-28 03:07:51,748 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:07:51,748 INFO L794 eck$LassoCheckResult]: Stem: 158#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 156#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 157#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 161#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 163#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2020-11-28 03:07:51,748 INFO L796 eck$LassoCheckResult]: Loop: 152#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 153#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 159#L24-2 assume !(main_~y~0 < main_~z~0); 152#L24-3 [2020-11-28 03:07:51,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:51,749 INFO L82 PathProgramCache]: Analyzing trace with hash 29685031, now seen corresponding path program 1 times [2020-11-28 03:07:51,749 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:51,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [151826226] [2020-11-28 03:07:51,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:51,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,759 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,766 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,768 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:51,769 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:51,769 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 2 times [2020-11-28 03:07:51,769 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:51,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [580003440] [2020-11-28 03:07:51,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:51,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,775 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,779 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,780 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:51,781 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:51,782 INFO L82 PathProgramCache]: Analyzing trace with hash -416479046, now seen corresponding path program 1 times [2020-11-28 03:07:51,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:51,782 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1707036772] [2020-11-28 03:07:51,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:51,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,793 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:51,802 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:51,804 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:51,862 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:51,862 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:51,862 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:51,862 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:51,862 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:51,862 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:51,862 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:51,863 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:51,863 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2020-11-28 03:07:51,863 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:51,863 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:51,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,900 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:51,990 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:51,990 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:51,995 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:51,996 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:52,003 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:52,003 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_5=1} Honda state: {v_rep~unnamed0~0~true_5=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:52,045 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:52,045 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:52,100 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:52,100 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,378 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:52,381 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:52,381 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:52,381 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:52,381 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:52,381 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:52,381 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,381 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:52,381 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:52,381 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration3_Loop [2020-11-28 03:07:52,381 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:52,382 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:52,383 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:52,417 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:52,420 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:52,509 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:52,509 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,517 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:52,519 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:52,519 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:52,519 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:52,519 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:52,519 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:52,524 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:52,525 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:52,528 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:52,634 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:52,635 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:52,636 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:52,636 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:52,636 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:52,638 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:52,639 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:52,644 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 26 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,674 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:52,676 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:52,676 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:52,677 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:52,677 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:52,680 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:52,680 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:52,691 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 03:07:52,733 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:52,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:52,743 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:52,743 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:52,743 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:52,743 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:52,743 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:52,747 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-28 03:07:52,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,754 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:52,766 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-28 03:07:52,766 INFO L444 ModelExtractionUtils]: 3 out of 9 variables were initially zero. Simplification set additionally 2 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:52,772 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:52,772 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:52,772 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:52,772 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~y~0 + 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:52,809 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:52,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:52,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:52,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 21 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:52,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:52,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:52,849 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:07:52,850 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:52,855 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:52,961 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:52,968 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:52,981 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:53,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:53,063 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 [2020-11-28 03:07:53,063 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9 Second operand 4 states. [2020-11-28 03:07:53,106 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 12 states and 18 transitions. cyclomatic complexity: 9. Second operand 4 states. Result 30 states and 45 transitions. Complement of second has 8 states. [2020-11-28 03:07:53,113 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 [2020-11-28 03:07:53,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:07:53,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 15 transitions. [2020-11-28 03:07:53,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:07:53,114 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:53,114 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:07:53,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:53,115 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 15 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-28 03:07:53,115 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:53,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 45 transitions. [2020-11-28 03:07:53,117 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:53,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 22 states and 33 transitions. [2020-11-28 03:07:53,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:07:53,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:07:53,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 33 transitions. [2020-11-28 03:07:53,119 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:53,119 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 33 transitions. [2020-11-28 03:07:53,119 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 33 transitions. [2020-11-28 03:07:53,121 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-28 03:07:53,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:07:53,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-11-28 03:07:53,125 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:07:53,125 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:07:53,126 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:07:53,126 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-11-28 03:07:53,127 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:07:53,127 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:53,127 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:53,127 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-11-28 03:07:53,127 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1] [2020-11-28 03:07:53,128 INFO L794 eck$LassoCheckResult]: Stem: 252#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 250#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 251#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 263#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 261#L24-2 assume !(main_~y~0 < main_~z~0); 247#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 248#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 259#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2020-11-28 03:07:53,128 INFO L796 eck$LassoCheckResult]: Loop: 258#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 258#L24-2 [2020-11-28 03:07:53,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,128 INFO L82 PathProgramCache]: Analyzing trace with hash -416479044, now seen corresponding path program 2 times [2020-11-28 03:07:53,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [276517596] [2020-11-28 03:07:53,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,152 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,170 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:53,174 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,174 INFO L82 PathProgramCache]: Analyzing trace with hash 53, now seen corresponding path program 2 times [2020-11-28 03:07:53,175 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,175 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1391375828] [2020-11-28 03:07:53,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,182 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,194 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,195 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,196 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:53,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,198 INFO L82 PathProgramCache]: Analyzing trace with hash -25948454, now seen corresponding path program 3 times [2020-11-28 03:07:53,198 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:53,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037978594] [2020-11-28 03:07:53,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:53,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:53,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:53,245 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:53,296 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:53,297 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:53,297 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:53,297 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:53,297 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:53,297 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,297 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:53,297 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:53,297 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2020-11-28 03:07:53,297 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:53,297 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:53,298 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,307 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,316 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,321 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,407 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:53,408 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,411 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:53,411 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:53,414 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:53,414 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_7=1} Honda state: {v_rep~unnamed0~0~true_7=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 30 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,447 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:53,447 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,474 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:53,474 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:53,697 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:53,699 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:53,700 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:53,700 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:53,700 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:53,700 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:53,700 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,700 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:53,700 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:53,700 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration4_Loop [2020-11-28 03:07:53,700 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:53,700 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:53,701 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,710 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,715 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,721 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:53,776 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:53,776 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 32 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,781 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:53,783 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:53,783 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:53,783 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:53,783 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:53,783 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:53,785 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:53,785 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:53,790 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:53,800 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:07:53,800 INFO L444 ModelExtractionUtils]: 1 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:53,804 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:53,804 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:53,804 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:53,804 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0, ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~z~0 - 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:53,845 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:53,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:53,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,923 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:53,923 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:53,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:53,935 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:07:53,935 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:53,935 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:53,936 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2020-11-28 03:07:53,936 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-28 03:07:53,970 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-11-28 03:07:53,972 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 [2020-11-28 03:07:53,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:07:53,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-28 03:07:53,972 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-28 03:07:53,973 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:53,973 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:07:54,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:54,016 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:54,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,027 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:07:54,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:54,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:54,028 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 [2020-11-28 03:07:54,028 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-28 03:07:54,111 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 21 states and 30 transitions. Complement of second has 5 states. [2020-11-28 03:07:54,115 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 [2020-11-28 03:07:54,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:07:54,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 8 transitions. [2020-11-28 03:07:54,116 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 8 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-28 03:07:54,116 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:54,116 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:07:54,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,142 INFO L263 TraceCheckSpWp]: Trace formula consists of 31 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:54,143 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:54,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,149 WARN L261 TraceCheckSpWp]: Trace formula consists of 7 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:07:54,149 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:54,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:54,150 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 [2020-11-28 03:07:54,150 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13 Second operand 2 states. [2020-11-28 03:07:54,180 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 13. Second operand 2 states. Result 29 states and 45 transitions. Complement of second has 5 states. [2020-11-28 03:07:54,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2020-11-28 03:07:54,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2020-11-28 03:07:54,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 16 transitions. [2020-11-28 03:07:54,182 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 1 letters. [2020-11-28 03:07:54,182 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:54,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 9 letters. Loop has 1 letters. [2020-11-28 03:07:54,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:54,183 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 16 transitions. Stem has 8 letters. Loop has 2 letters. [2020-11-28 03:07:54,183 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:54,183 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 29 states and 45 transitions. [2020-11-28 03:07:54,185 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:07:54,186 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 29 states to 22 states and 31 transitions. [2020-11-28 03:07:54,186 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 11 [2020-11-28 03:07:54,186 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 12 [2020-11-28 03:07:54,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 22 states and 31 transitions. [2020-11-28 03:07:54,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:54,186 INFO L691 BuchiCegarLoop]: Abstraction has 22 states and 31 transitions. [2020-11-28 03:07:54,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states and 31 transitions. [2020-11-28 03:07:54,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2020-11-28 03:07:54,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:07:54,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 26 transitions. [2020-11-28 03:07:54,189 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:07:54,189 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 26 transitions. [2020-11-28 03:07:54,189 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:07:54,189 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 26 transitions. [2020-11-28 03:07:54,190 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 5 [2020-11-28 03:07:54,190 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:54,190 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:54,191 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-11-28 03:07:54,191 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:07:54,191 INFO L794 eck$LassoCheckResult]: Stem: 453#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 451#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 452#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 456#L24-2 assume !(main_~y~0 < main_~z~0); 449#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 450#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 454#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 455#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2020-11-28 03:07:54,191 INFO L796 eck$LassoCheckResult]: Loop: 447#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 448#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 459#L24-2 assume !(main_~y~0 < main_~z~0); 447#L24-3 [2020-11-28 03:07:54,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,192 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 4 times [2020-11-28 03:07:54,192 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,192 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [902601109] [2020-11-28 03:07:54,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:54,201 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:54,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:54,209 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:54,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,210 INFO L82 PathProgramCache]: Analyzing trace with hash 55200, now seen corresponding path program 3 times [2020-11-28 03:07:54,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,211 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1646653033] [2020-11-28 03:07:54,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:54,215 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:54,218 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:54,219 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:54,219 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:54,220 INFO L82 PathProgramCache]: Analyzing trace with hash -1986148987, now seen corresponding path program 5 times [2020-11-28 03:07:54,220 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:54,220 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1779890122] [2020-11-28 03:07:54,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:54,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:54,336 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:54,336 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1779890122] [2020-11-28 03:07:54,337 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1648052682] [2020-11-28 03:07:54,337 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 34 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-11-28 03:07:54,372 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2020-11-28 03:07:54,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-11-28 03:07:54,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 33 conjuncts, 8 conjunts are in the unsatisfiable core [2020-11-28 03:07:54,373 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:54,443 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:54,443 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-11-28 03:07:54,443 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2020-11-28 03:07:54,444 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236303574] [2020-11-28 03:07:54,472 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:54,472 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:54,472 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:54,472 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:54,472 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:54,472 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,472 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:54,472 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:54,472 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2020-11-28 03:07:54,472 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:54,473 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:54,474 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:54,481 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:54,486 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:54,575 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:54,575 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:54,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:54,584 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 35 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,588 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:54,589 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_9=0} Honda state: {v_rep~unnamed0~0~false_9=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,623 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:54,623 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:54,626 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:54,626 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~true_9=1} Honda state: {v_rep~unnamed0~0~true_9=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,651 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:54,651 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 38 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 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,680 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:54,681 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:54,956 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:54,958 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:54,958 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:54,958 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:54,958 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:54,958 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:54,958 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:54,958 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:54,958 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:54,958 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration5_Loop [2020-11-28 03:07:54,958 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:54,958 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:54,959 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:54,963 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:54,966 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:55,052 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:55,052 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:55,055 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,056 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,056 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,057 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,057 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:55,069 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:55,069 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:55,073 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:55,104 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,112 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,112 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,112 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,112 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:55,114 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:55,114 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:55,117 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:55,145 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,146 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,147 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:55,147 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,147 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,147 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:55,148 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:55,149 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:55,153 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. [2020-11-28 03:07:55,177 INFO L489 LassoAnalysis]: Using template '2-nested'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:55,180 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,181 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,181 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,182 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,182 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:55,184 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 03:07:55,184 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 03:07:55,189 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:55,216 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,217 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,217 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,218 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,218 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:55,222 INFO L401 nArgumentSynthesizer]: We have 9 Motzkin's Theorem applications. [2020-11-28 03:07:55,222 INFO L402 nArgumentSynthesizer]: A total of 3 supporting invariants were added. [2020-11-28 03:07:55,229 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:55,293 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:55,296 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:55,297 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:55,297 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:55,297 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:55,297 INFO L205 nArgumentSynthesizer]: 3 template conjuncts. [2020-11-28 03:07:55,301 INFO L401 nArgumentSynthesizer]: We have 3 Motzkin's Theorem applications. [2020-11-28 03:07:55,301 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:55,310 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:55,329 INFO L443 ModelExtractionUtils]: Simplification made 4 calls to the SMT solver. [2020-11-28 03:07:55,329 INFO L444 ModelExtractionUtils]: 2 out of 9 variables were initially zero. Simplification set additionally 3 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:55,335 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:55,335 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:55,335 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:55,336 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function 2-nested ranking function: f0 = 1*ULTIMATE.start_main_~x~0 f1 = 1*ULTIMATE.start_main_~x~0 + 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:55,378 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:55,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:55,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:55,431 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:55,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:55,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:55,442 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:07:55,443 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:55,447 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:55,576 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 19 DAG size of output: 18 [2020-11-28 03:07:55,581 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:55,584 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:55,597 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:55,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:55,698 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 [2020-11-28 03:07:55,698 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 03:07:55,745 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 26 states and 37 transitions. Complement of second has 7 states. [2020-11-28 03:07:55,748 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 [2020-11-28 03:07:55,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:07:55,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 9 transitions. [2020-11-28 03:07:55,748 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 9 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:07:55,749 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:55,749 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:07:55,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:55,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:55,796 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:55,796 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:55,806 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:07:55,807 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:55,820 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:55,913 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:55,918 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:55,932 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:56,038 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:56,039 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 [2020-11-28 03:07:56,039 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 03:07:56,069 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 24 states and 32 transitions. Complement of second has 7 states. [2020-11-28 03:07:56,071 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 [2020-11-28 03:07:56,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:07:56,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 8 transitions. [2020-11-28 03:07:56,071 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 8 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:07:56,072 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:56,072 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:07:56,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:56,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:56,095 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:56,095 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:56,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:56,103 WARN L261 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 6 conjunts are in the unsatisfiable core [2020-11-28 03:07:56,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:56,107 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:56,164 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:56,165 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-11-28 03:07:56,187 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-11-28 03:07:56,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:56,290 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 [2020-11-28 03:07:56,290 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12 Second operand 4 states. [2020-11-28 03:07:56,337 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 26 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 31 states and 43 transitions. Complement of second has 6 states. [2020-11-28 03:07:56,341 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 [2020-11-28 03:07:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:07:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:07:56,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:07:56,342 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:56,342 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 11 letters. Loop has 3 letters. [2020-11-28 03:07:56,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:56,343 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 8 letters. Loop has 6 letters. [2020-11-28 03:07:56,343 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:56,343 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 31 states and 43 transitions. [2020-11-28 03:07:56,345 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 6 [2020-11-28 03:07:56,345 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 31 states to 24 states and 34 transitions. [2020-11-28 03:07:56,345 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 03:07:56,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:07:56,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 34 transitions. [2020-11-28 03:07:56,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:56,346 INFO L691 BuchiCegarLoop]: Abstraction has 24 states and 34 transitions. [2020-11-28 03:07:56,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states and 34 transitions. [2020-11-28 03:07:56,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 19. [2020-11-28 03:07:56,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-11-28 03:07:56,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 27 transitions. [2020-11-28 03:07:56,349 INFO L714 BuchiCegarLoop]: Abstraction has 19 states and 27 transitions. [2020-11-28 03:07:56,349 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:07:56,355 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-28 03:07:56,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-28 03:07:56,358 INFO L87 Difference]: Start difference. First operand 19 states and 27 transitions. Second operand 8 states. [2020-11-28 03:07:56,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:07:56,542 INFO L93 Difference]: Finished difference Result 21 states and 28 transitions. [2020-11-28 03:07:56,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-11-28 03:07:56,543 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 21 states and 28 transitions. [2020-11-28 03:07:56,544 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:07:56,545 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 21 states to 21 states and 28 transitions. [2020-11-28 03:07:56,545 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 8 [2020-11-28 03:07:56,545 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 8 [2020-11-28 03:07:56,545 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 28 transitions. [2020-11-28 03:07:56,545 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:07:56,545 INFO L691 BuchiCegarLoop]: Abstraction has 21 states and 28 transitions. [2020-11-28 03:07:56,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states and 28 transitions. [2020-11-28 03:07:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 18. [2020-11-28 03:07:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-11-28 03:07:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 25 transitions. [2020-11-28 03:07:56,548 INFO L714 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-28 03:07:56,548 INFO L594 BuchiCegarLoop]: Abstraction has 18 states and 25 transitions. [2020-11-28 03:07:56,548 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:07:56,548 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 18 states and 25 transitions. [2020-11-28 03:07:56,549 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:07:56,549 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:07:56,549 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:07:56,549 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1] [2020-11-28 03:07:56,549 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2020-11-28 03:07:56,550 INFO L794 eck$LassoCheckResult]: Stem: 784#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_~x~0, main_~y~0, main_~z~0;havoc main_~x~0;havoc main_~y~0;havoc main_~z~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1;main_~z~0 := main_#t~nondet2;havoc main_#t~nondet2; 782#L21 assume ((main_~x~0 <= 10000 && main_~x~0 >= -10000) && main_~y~0 <= 10000) && main_~z~0 <= 10000; 783#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 787#L24-2 assume !(main_~y~0 < main_~z~0); 795#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 794#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 793#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2020-11-28 03:07:56,550 INFO L796 eck$LassoCheckResult]: Loop: 778#L24-3 main_~y~0 := main_~x~0 + main_~y~0; 779#L22-2 assume !!(main_~y~0 >= 1);main_~x~0 := main_~x~0 - 1; 789#L24-2 assume !!(main_~y~0 < main_~z~0);main_~x~0 := 1 + main_~x~0;main_~z~0 := main_~z~0 - 1; 791#L24-2 assume !(main_~y~0 < main_~z~0); 778#L24-3 [2020-11-28 03:07:56,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:56,550 INFO L82 PathProgramCache]: Analyzing trace with hash -418159556, now seen corresponding path program 6 times [2020-11-28 03:07:56,550 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:56,551 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [386273861] [2020-11-28 03:07:56,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:56,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,559 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,564 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,566 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:56,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:56,567 INFO L82 PathProgramCache]: Analyzing trace with hash 1711282, now seen corresponding path program 1 times [2020-11-28 03:07:56,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:56,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1936794646] [2020-11-28 03:07:56,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:56,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,572 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,576 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,577 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:56,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:56,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1441076371, now seen corresponding path program 7 times [2020-11-28 03:07:56,578 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:07:56,578 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097376913] [2020-11-28 03:07:56,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:07:56,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,588 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:07:56,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:07:56,599 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:07:56,684 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:56,684 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:56,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:56,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:56,685 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:07:56,685 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:56,685 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:56,685 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:56,685 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2020-11-28 03:07:56,685 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:56,685 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:56,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:56,694 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:56,707 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:56,843 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:56,843 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:56,849 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:56,849 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:56,852 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:56,852 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 47 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:56,880 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:56,880 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:56,891 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:07:56,891 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/bin/uautomizer/z3 Starting monitored process 48 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 48 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:56,919 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:07:56,919 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 49 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:56,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:07:56,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:07:57,612 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:07:57,614 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:07:57,614 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:07:57,614 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:07:57,614 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:07:57,614 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:07:57,615 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:57,615 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:07:57,615 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:07:57,615 INFO L133 ssoRankerPreferences]: Filename of dumped script: LarrazOliverasRodriguez-CarbonellRubio-FMCAD2013-Fig1.c_Iteration6_Loop [2020-11-28 03:07:57,615 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:07:57,615 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:07:57,616 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:57,620 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:57,624 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:07:57,705 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:07:57,705 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) Waiting until toolchain timeout for monitored process 50 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:57,707 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:57,709 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:57,709 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:57,709 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:57,709 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:57,711 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:57,711 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:57,714 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:57,740 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:57,742 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:57,742 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:57,742 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:57,742 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:57,744 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:07:57,744 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:07:57,748 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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 [2020-11-28 03:07:57,777 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:07:57,778 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:07:57,779 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:07:57,779 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:07:57,779 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:07:57,779 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:07:57,781 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:07:57,782 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:07:57,786 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:07:57,795 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:07:57,795 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_b02d5239-8da8-4bf0-a96f-bc4ec4f6cae6/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) [2020-11-28 03:07:57,797 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:07:57,797 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:07:57,798 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:07:57,798 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~z~0) = 1*ULTIMATE.start_main_~z~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:07:57,820 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:07:57,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:07:57,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:57,842 INFO L263 TraceCheckSpWp]: Trace formula consists of 27 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:07:57,842 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:57,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:07:57,848 INFO L263 TraceCheckSpWp]: Trace formula consists of 13 conjuncts, 5 conjunts are in the unsatisfiable core [2020-11-28 03:07:57,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:07:57,879 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:07:57,880 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 [2020-11-28 03:07:57,880 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11 Second operand 5 states. [2020-11-28 03:07:57,907 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 18 states and 25 transitions. cyclomatic complexity: 11. Second operand 5 states. Result 35 states and 50 transitions. Complement of second has 6 states. [2020-11-28 03:07:57,907 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 [2020-11-28 03:07:57,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-11-28 03:07:57,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 15 transitions. [2020-11-28 03:07:57,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 4 letters. [2020-11-28 03:07:57,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:57,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 12 letters. Loop has 4 letters. [2020-11-28 03:07:57,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:57,909 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 15 transitions. Stem has 8 letters. Loop has 8 letters. [2020-11-28 03:07:57,909 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:07:57,909 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 50 transitions. [2020-11-28 03:07:57,910 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:07:57,911 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:07:57,911 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:07:57,911 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:07:57,911 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:07:57,911 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:07:57,911 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:07:57,911 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:07:57,916 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:07:57 BoogieIcfgContainer [2020-11-28 03:07:57,916 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:07:57,917 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:07:57,917 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:07:57,917 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:07:57,917 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:07:48" (3/4) ... [2020-11-28 03:07:57,921 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:07:57,922 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:07:57,923 INFO L168 Benchmark]: Toolchain (without parser) took 10011.45 ms. Allocated memory was 115.3 MB in the beginning and 169.9 MB in the end (delta: 54.5 MB). Free memory was 83.2 MB in the beginning and 78.2 MB in the end (delta: 4.9 MB). Peak memory consumption was 59.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:57,924 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:57,924 INFO L168 Benchmark]: CACSL2BoogieTranslator took 269.65 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 93.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:57,925 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 115.3 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:57,926 INFO L168 Benchmark]: Boogie Preprocessor took 22.00 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 91.3 MB in the end (delta: 951.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:57,926 INFO L168 Benchmark]: RCFGBuilder took 277.99 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:57,927 INFO L168 Benchmark]: BuchiAutomizer took 9381.47 ms. Allocated memory was 115.3 MB in the beginning and 169.9 MB in the end (delta: 54.5 MB). Free memory was 81.7 MB in the beginning and 78.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. [2020-11-28 03:07:57,927 INFO L168 Benchmark]: Witness Printer took 5.11 ms. Allocated memory is still 169.9 MB. Free memory is still 78.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:07:57,933 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 75.5 MB. Free memory was 35.4 MB in the beginning and 35.4 MB in the end (delta: 24.3 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 269.65 ms. Allocated memory is still 115.3 MB. Free memory was 82.9 MB in the beginning and 93.5 MB in the end (delta: -10.6 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 35.40 ms. Allocated memory is still 115.3 MB. Free memory was 93.5 MB in the beginning and 92.2 MB in the end (delta: 1.3 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 22.00 ms. Allocated memory is still 115.3 MB. Free memory was 92.2 MB in the beginning and 91.3 MB in the end (delta: 951.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * RCFGBuilder took 277.99 ms. Allocated memory is still 115.3 MB. Free memory was 91.3 MB in the beginning and 82.3 MB in the end (delta: 9.0 MB). Peak memory consumption was 10.5 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 9381.47 ms. Allocated memory was 115.3 MB in the beginning and 169.9 MB in the end (delta: 54.5 MB). Free memory was 81.7 MB in the beginning and 78.2 MB in the end (delta: 3.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 16.1 GB. * Witness Printer took 5.11 ms. Allocated memory is still 169.9 MB. Free memory is still 78.2 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 7 terminating modules (1 trivial, 4 deterministic, 2 nondeterministic). One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y) and consists of 5 locations. One deterministic module has affine ranking function -1 * y + z and consists of 4 locations. One deterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else y + x) and consists of 5 locations. One deterministic module has affine ranking function z and consists of 4 locations. One nondeterministic module has affine ranking function z + -1 * y and consists of 4 locations. One nondeterministic module has 2-nested ranking function (if x > 0 then 1 else 0), (if x > 0 then x else x + y) and consists of 4 locations. 1 modules have a trivial ranking function, the largest among these consists of 8 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 9.3s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 6.8s. Construction of modules took 0.3s. Büchi inclusion checks took 1.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 17 StatesRemovedByMinimization, 5 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 18 states and ocurred in iteration 3. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/1 HoareTripleCheckerStatistics: 66 SDtfs, 68 SDslu, 8 SDs, 0 SdLazy, 143 SolverSat, 25 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax165 hnf96 lsp53 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq164 hnf93 smp97 dnf100 smp100 tf109 neg100 sie104 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 28ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 3 MotzkinApplications: 9 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 10 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 2.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...