./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.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_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c -s /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 .............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 03:14:49,348 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-28 03:14:49,352 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-28 03:14:49,418 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-28 03:14:49,419 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-28 03:14:49,439 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-28 03:14:49,441 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-28 03:14:49,443 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-28 03:14:49,446 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-28 03:14:49,447 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-28 03:14:49,452 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-28 03:14:49,459 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-28 03:14:49,460 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-28 03:14:49,468 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-28 03:14:49,471 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-28 03:14:49,473 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-28 03:14:49,476 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-28 03:14:49,479 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-28 03:14:49,482 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-28 03:14:49,492 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-28 03:14:49,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-28 03:14:49,500 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-28 03:14:49,502 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-28 03:14:49,503 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-28 03:14:49,507 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-28 03:14:49,510 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-28 03:14:49,511 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-28 03:14:49,512 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-28 03:14:49,514 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-28 03:14:49,515 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-28 03:14:49,516 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-28 03:14:49,517 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-28 03:14:49,518 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-28 03:14:49,521 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-28 03:14:49,522 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-28 03:14:49,523 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-28 03:14:49,524 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-28 03:14:49,524 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-28 03:14:49,524 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-28 03:14:49,525 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-28 03:14:49,526 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-28 03:14:49,529 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/config/svcomp-Termination-64bit-Automizer_Default.epf [2020-11-28 03:14:49,568 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-28 03:14:49,568 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-28 03:14:49,571 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-28 03:14:49,571 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-28 03:14:49,571 INFO L138 SettingsManager]: * Use SBE=true [2020-11-28 03:14:49,572 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2020-11-28 03:14:49,572 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2020-11-28 03:14:49,572 INFO L138 SettingsManager]: * Use old map elimination=false [2020-11-28 03:14:49,572 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2020-11-28 03:14:49,573 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2020-11-28 03:14:49,574 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2020-11-28 03:14:49,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-28 03:14:49,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-11-28 03:14:49,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-28 03:14:49,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-28 03:14:49,575 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2020-11-28 03:14:49,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2020-11-28 03:14:49,575 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2020-11-28 03:14:49,576 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-28 03:14:49,576 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2020-11-28 03:14:49,576 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-28 03:14:49,576 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2020-11-28 03:14:49,577 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-28 03:14:49,577 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-28 03:14:49,577 INFO L138 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2020-11-28 03:14:49,577 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-28 03:14:49,578 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-28 03:14:49,578 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-28 03:14:49,578 INFO L138 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2020-11-28 03:14:49,580 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2020-11-28 03:14:49,581 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 835dc6725bef5f7d15ae0e4368f1a97f9d2b8c09 [2020-11-28 03:14:49,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-28 03:14:49,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-28 03:14:49,855 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-28 03:14:49,857 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-28 03:14:49,858 INFO L275 PluginConnector]: CDTParser initialized [2020-11-28 03:14:49,859 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/../../sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-11-28 03:14:49,931 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/data/982ddd22c/84c5ea069a104311931d0204a2ea7ff1/FLAG499ce0daf [2020-11-28 03:14:50,449 INFO L306 CDTParser]: Found 1 translation units. [2020-11-28 03:14:50,449 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/sv-benchmarks/c/termination-crafted-lit/UrbanMine-ESOP2014-Fig3.c [2020-11-28 03:14:50,459 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/data/982ddd22c/84c5ea069a104311931d0204a2ea7ff1/FLAG499ce0daf [2020-11-28 03:14:50,842 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/data/982ddd22c/84c5ea069a104311931d0204a2ea7ff1 [2020-11-28 03:14:50,845 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-28 03:14:50,846 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-11-28 03:14:50,848 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:50,848 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-28 03:14:50,852 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-28 03:14:50,852 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:50" (1/1) ... [2020-11-28 03:14:50,854 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6a736fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:50, skipping insertion in model container [2020-11-28 03:14:50,854 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 03:14:50" (1/1) ... [2020-11-28 03:14:50,862 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-28 03:14:50,874 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-28 03:14:51,026 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:51,050 INFO L203 MainTranslator]: Completed pre-run [2020-11-28 03:14:51,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-28 03:14:51,085 INFO L208 MainTranslator]: Completed translation [2020-11-28 03:14:51,086 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51 WrapperNode [2020-11-28 03:14:51,086 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-28 03:14:51,089 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:51,089 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-11-28 03:14:51,089 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-11-28 03:14:51,101 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,107 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,130 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-11-28 03:14:51,132 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-28 03:14:51,132 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-28 03:14:51,133 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-28 03:14:51,149 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,150 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,151 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,154 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,158 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,159 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... [2020-11-28 03:14:51,161 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-28 03:14:51,162 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-28 03:14:51,163 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-28 03:14:51,164 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-28 03:14:51,165 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:51,256 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-28 03:14:51,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-28 03:14:51,458 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-28 03:14:51,458 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-11-28 03:14:51,460 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:51 BoogieIcfgContainer [2020-11-28 03:14:51,461 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-28 03:14:51,462 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2020-11-28 03:14:51,462 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2020-11-28 03:14:51,467 INFO L275 PluginConnector]: BuchiAutomizer initialized [2020-11-28 03:14:51,469 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:14:51,469 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 03:14:50" (1/3) ... [2020-11-28 03:14:51,470 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6db0183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:14:51, skipping insertion in model container [2020-11-28 03:14:51,471 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:14:51,471 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 03:14:51" (2/3) ... [2020-11-28 03:14:51,471 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6db0183d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 03:14:51, skipping insertion in model container [2020-11-28 03:14:51,472 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2020-11-28 03:14:51,472 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:51" (3/3) ... [2020-11-28 03:14:51,476 INFO L373 chiAutomizerObserver]: Analyzing ICFG UrbanMine-ESOP2014-Fig3.c [2020-11-28 03:14:51,542 INFO L359 BuchiCegarLoop]: Interprodecural is true [2020-11-28 03:14:51,542 INFO L360 BuchiCegarLoop]: Hoare is false [2020-11-28 03:14:51,542 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2020-11-28 03:14:51,542 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-28 03:14:51,542 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-28 03:14:51,543 INFO L364 BuchiCegarLoop]: Difference is false [2020-11-28 03:14:51,543 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-28 03:14:51,543 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2020-11-28 03:14:51,555 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 03:14:51,573 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:51,574 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:51,574 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:51,581 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:14:51,581 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:51,581 INFO L427 BuchiCegarLoop]: ======== Iteration 1============ [2020-11-28 03:14:51,581 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 9 states. [2020-11-28 03:14:51,582 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2020-11-28 03:14:51,583 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:51,583 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:51,583 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1] [2020-11-28 03:14:51,583 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:51,590 INFO L794 eck$LassoCheckResult]: Stem: 3#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 10#L27-2true [2020-11-28 03:14:51,591 INFO L796 eck$LassoCheckResult]: Loop: 10#L27-2true assume !!(0 != main_~x~0 && main_~y~0 > 0); 7#L19true assume !(main_~x~0 > 0); 5#L27true assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 10#L27-2true [2020-11-28 03:14:51,597 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:51,597 INFO L82 PathProgramCache]: Analyzing trace with hash 32, now seen corresponding path program 1 times [2020-11-28 03:14:51,605 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:51,606 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726556714] [2020-11-28 03:14:51,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:51,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,684 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,692 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,707 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:51,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:51,709 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 1 times [2020-11-28 03:14:51,709 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:51,710 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2072895386] [2020-11-28 03:14:51,710 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,720 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,725 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,727 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:51,729 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:51,729 INFO L82 PathProgramCache]: Analyzing trace with hash 963597, now seen corresponding path program 1 times [2020-11-28 03:14:51,730 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:51,730 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1310976357] [2020-11-28 03:14:51,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:51,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,740 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:51,746 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:51,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:51,870 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:51,871 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:51,871 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:51,871 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:51,872 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:51,872 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:51,872 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:51,872 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:51,872 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-11-28 03:14:51,872 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:51,873 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:51,911 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:51,957 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 03:14:51,983 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 03:14:52,018 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 03:14:52,024 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 03:14:52,188 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:52,189 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,210 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:52,210 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:52,220 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:52,221 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:52,269 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:52,269 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,274 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:52,274 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:52,316 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:52,317 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,324 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:52,324 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:52,348 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:52,348 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,351 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:52,351 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:52,375 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:52,375 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,416 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:52,416 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:52,464 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:52,467 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:52,467 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:52,467 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:52,467 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:52,467 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:52,467 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,468 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:52,468 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:52,468 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration1_Loop [2020-11-28 03:14:52,468 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:52,468 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:52,470 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 03:14:52,481 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 03:14:52,488 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 03:14:52,496 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 03:14:52,504 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 03:14:52,619 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:52,623 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:52,629 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 03:14:52,631 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:52,631 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:52,632 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:52,632 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,640 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:52,641 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:52,655 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:52,696 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 03:14:52,698 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:52,698 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:52,698 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:52,699 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:52,699 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:52,700 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:52,701 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:52,703 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:52,753 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 03:14:52,755 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:52,755 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:52,755 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:52,756 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:52,760 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:52,760 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:52,765 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:52,810 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,812 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:52,813 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:52,813 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:52,813 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:14:52,813 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:52,816 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:14:52,816 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:52,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:52,865 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 03:14:52,867 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:52,867 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:52,867 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:52,867 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:52,867 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:52,870 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:52,870 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,872 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:52,906 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:14:52,906 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:52,919 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:52,920 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:52,920 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:52,921 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] [2020-11-28 03:14:52,948 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:52,979 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:52,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:52,989 INFO L263 TraceCheckSpWp]: Trace formula consists of 6 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:52,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:53,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:53,005 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:53,005 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:53,026 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 03:14:53,049 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 03:14:53,050 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 9 states. Second operand 4 states. [2020-11-28 03:14:53,121 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 9 states.. Second operand 4 states. Result 33 states and 49 transitions. Complement of second has 8 states. [2020-11-28 03:14:53,124 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 03:14:53,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:53,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 17 transitions. [2020-11-28 03:14:53,127 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 3 letters. [2020-11-28 03:14:53,128 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:53,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:14:53,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:53,129 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 5 states and 17 transitions. Stem has 1 letters. Loop has 6 letters. [2020-11-28 03:14:53,129 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:53,130 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 33 states and 49 transitions. [2020-11-28 03:14:53,137 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-28 03:14:53,142 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 33 states to 16 states and 25 transitions. [2020-11-28 03:14:53,143 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 10 [2020-11-28 03:14:53,144 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 11 [2020-11-28 03:14:53,145 INFO L73 IsDeterministic]: Start isDeterministic. Operand 16 states and 25 transitions. [2020-11-28 03:14:53,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:53,145 INFO L691 BuchiCegarLoop]: Abstraction has 16 states and 25 transitions. [2020-11-28 03:14:53,161 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states and 25 transitions. [2020-11-28 03:14:53,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 15. [2020-11-28 03:14:53,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:14:53,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 23 transitions. [2020-11-28 03:14:53,172 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-28 03:14:53,172 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 23 transitions. [2020-11-28 03:14:53,173 INFO L427 BuchiCegarLoop]: ======== Iteration 2============ [2020-11-28 03:14:53,173 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 23 transitions. [2020-11-28 03:14:53,175 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-28 03:14:53,175 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:53,178 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:53,179 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1] [2020-11-28 03:14:53,179 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:53,179 INFO L794 eck$LassoCheckResult]: Stem: 82#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 83#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2020-11-28 03:14:53,180 INFO L796 eck$LassoCheckResult]: Loop: 94#L19 assume main_~x~0 > 0; 95#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 96#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 94#L19 [2020-11-28 03:14:53,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,180 INFO L82 PathProgramCache]: Analyzing trace with hash 1002, now seen corresponding path program 1 times [2020-11-28 03:14:53,182 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,182 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869666047] [2020-11-28 03:14:53,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,197 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,202 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:53,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,203 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 1 times [2020-11-28 03:14:53,203 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,203 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171483364] [2020-11-28 03:14:53,203 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,220 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,226 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,227 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:53,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:53,228 INFO L82 PathProgramCache]: Analyzing trace with hash 29863643, now seen corresponding path program 1 times [2020-11-28 03:14:53,228 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:53,228 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527786507] [2020-11-28 03:14:53,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:53,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,238 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:53,258 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:53,259 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:53,340 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:53,340 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:53,340 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:53,340 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:53,341 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:53,341 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,341 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:53,341 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:53,341 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-11-28 03:14:53,341 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:53,341 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:53,343 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 03:14:53,348 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 03:14:53,358 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 03:14:53,364 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 03:14:53,386 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 03:14:53,469 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:53,470 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:53,478 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:53,478 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,483 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:53,483 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {v_rep~unnamed0~0~false_3=0} Honda state: {v_rep~unnamed0~0~false_3=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:53,523 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:53,523 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:53,528 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:53,528 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:53,557 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:53,557 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:53,560 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:53,560 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,583 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:53,583 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,611 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:53,611 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:53,674 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:53,675 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:53,675 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:53,675 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:53,675 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:53,676 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:53,676 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,676 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:53,676 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:53,676 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration2_Loop [2020-11-28 03:14:53,676 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:53,676 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:53,677 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 03:14:53,688 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 03:14:53,692 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 03:14:53,697 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 03:14:53,716 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 03:14:53,813 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:53,813 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:53,820 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 03:14:53,822 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:53,822 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:53,822 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:53,822 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:53,828 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:53,829 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,834 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:53,875 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 03:14:53,877 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:53,877 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:53,877 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:53,877 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:53,880 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:53,881 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,889 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:53,944 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2020-11-28 03:14:53,946 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:53,946 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:53,946 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:53,946 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:53,946 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:53,947 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:53,947 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,953 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:53,990 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 03:14:53,991 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:53,992 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:53,992 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:53,992 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:53,992 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:53,993 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:53,993 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:53,996 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:54,000 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:14:54,000 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,003 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:54,003 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:54,003 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:54,003 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 23 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,038 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:54,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,067 INFO L263 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:54,068 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:54,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,075 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:54,076 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:54,125 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 03:14:54,126 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 03:14:54,126 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11 Second operand 4 states. [2020-11-28 03:14:54,165 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 23 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 42 states and 70 transitions. Complement of second has 7 states. [2020-11-28 03:14:54,169 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 03:14:54,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:54,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:14:54,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 3 letters. [2020-11-28 03:14:54,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:54,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:14:54,170 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:54,170 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 2 letters. Loop has 6 letters. [2020-11-28 03:14:54,171 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:54,171 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 70 transitions. [2020-11-28 03:14:54,173 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-28 03:14:54,175 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 56 transitions. [2020-11-28 03:14:54,175 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 14 [2020-11-28 03:14:54,175 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:14:54,175 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 56 transitions. [2020-11-28 03:14:54,175 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:54,176 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 56 transitions. [2020-11-28 03:14:54,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 56 transitions. [2020-11-28 03:14:54,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2020-11-28 03:14:54,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-11-28 03:14:54,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 52 transitions. [2020-11-28 03:14:54,182 INFO L714 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-28 03:14:54,182 INFO L594 BuchiCegarLoop]: Abstraction has 32 states and 52 transitions. [2020-11-28 03:14:54,182 INFO L427 BuchiCegarLoop]: ======== Iteration 3============ [2020-11-28 03:14:54,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 52 transitions. [2020-11-28 03:14:54,183 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 7 [2020-11-28 03:14:54,184 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:54,184 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:54,184 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:14:54,184 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:54,185 INFO L794 eck$LassoCheckResult]: Stem: 178#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 179#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 189#L19 assume main_~x~0 > 0; 185#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 192#L27-2 [2020-11-28 03:14:54,185 INFO L796 eck$LassoCheckResult]: Loop: 192#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 209#L19 assume !(main_~x~0 > 0); 208#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 192#L27-2 [2020-11-28 03:14:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 1 times [2020-11-28 03:14:54,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263199401] [2020-11-28 03:14:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:54,192 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:54,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:54,196 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:54,198 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:54,198 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,199 INFO L82 PathProgramCache]: Analyzing trace with hash 40076, now seen corresponding path program 2 times [2020-11-28 03:14:54,199 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,199 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [798277513] [2020-11-28 03:14:54,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:54,204 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:54,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:54,207 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:54,208 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:54,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,209 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869056, now seen corresponding path program 1 times [2020-11-28 03:14:54,209 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:54,209 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652225569] [2020-11-28 03:14:54,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:54,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-28 03:14:54,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [652225569] [2020-11-28 03:14:54,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-28 03:14:54,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-28 03:14:54,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606611012] [2020-11-28 03:14:54,305 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:54,306 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:54,306 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:54,306 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:54,306 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:54,306 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,306 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:54,306 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:54,306 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-11-28 03:14:54,306 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:54,307 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:54,309 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 03:14:54,373 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 03:14:54,377 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 03:14:54,382 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 03:14:54,398 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 03:14:54,481 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:54,481 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:54,487 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:54,487 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 24 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,491 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:54,491 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:54,529 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:54,529 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 25 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,533 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:54,533 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,566 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:54,566 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:54,569 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:54,569 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,605 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:54,605 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 27 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,630 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:54,630 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 28 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,655 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:54,658 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:54,658 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:54,658 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:54,658 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:54,658 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:54,658 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,658 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:54,658 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:54,658 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration3_Loop [2020-11-28 03:14:54,658 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:54,658 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:54,660 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 03:14:54,671 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 03:14:54,676 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 03:14:54,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:54,690 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 03:14:54,782 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:54,782 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:54,787 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 03:14:54,788 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:54,788 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:54,789 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:54,789 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:54,789 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:54,789 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:54,790 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 29 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,791 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,814 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 03:14:54,816 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:54,816 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:54,816 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:54,816 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:14:54,816 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:54,817 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:14:54,817 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:54,821 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:54,861 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 03:14:54,862 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:54,862 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:54,862 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:54,863 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:54,866 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:54,866 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 31 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,872 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,903 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 03:14:54,904 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:54,905 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:54,905 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:54,905 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:54,905 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:54,906 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:54,906 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:54,908 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:54,912 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:14:54,912 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:54,915 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:54,915 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:54,915 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:54,915 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 33 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:54,947 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:54,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:54,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,983 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:54,983 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:54,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:54,990 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:54,991 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:55,000 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 03:14:55,001 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 03:14:55,001 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26 Second operand 4 states. [2020-11-28 03:14:55,047 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 52 transitions. cyclomatic complexity: 26. Second operand 4 states. Result 43 states and 69 transitions. Complement of second has 7 states. [2020-11-28 03:14:55,051 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 03:14:55,051 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:55,052 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:14:55,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:14:55,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:14:55,052 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,052 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:14:55,053 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,053 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 69 transitions. [2020-11-28 03:14:55,055 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:14:55,056 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 43 states and 69 transitions. [2020-11-28 03:14:55,056 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 18 [2020-11-28 03:14:55,056 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 19 [2020-11-28 03:14:55,057 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 69 transitions. [2020-11-28 03:14:55,057 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:55,057 INFO L691 BuchiCegarLoop]: Abstraction has 43 states and 69 transitions. [2020-11-28 03:14:55,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 69 transitions. [2020-11-28 03:14:55,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 42. [2020-11-28 03:14:55,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-11-28 03:14:55,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 67 transitions. [2020-11-28 03:14:55,065 INFO L714 BuchiCegarLoop]: Abstraction has 42 states and 67 transitions. [2020-11-28 03:14:55,065 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-28 03:14:55,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-28 03:14:55,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-11-28 03:14:55,071 INFO L87 Difference]: Start difference. First operand 42 states and 67 transitions. Second operand 4 states. [2020-11-28 03:14:55,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-28 03:14:55,107 INFO L93 Difference]: Finished difference Result 42 states and 62 transitions. [2020-11-28 03:14:55,108 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-28 03:14:55,109 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 62 transitions. [2020-11-28 03:14:55,110 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 10 [2020-11-28 03:14:55,112 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 36 states and 53 transitions. [2020-11-28 03:14:55,112 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 17 [2020-11-28 03:14:55,112 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 17 [2020-11-28 03:14:55,112 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 53 transitions. [2020-11-28 03:14:55,112 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:55,112 INFO L691 BuchiCegarLoop]: Abstraction has 36 states and 53 transitions. [2020-11-28 03:14:55,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 53 transitions. [2020-11-28 03:14:55,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 28. [2020-11-28 03:14:55,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-11-28 03:14:55,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 43 transitions. [2020-11-28 03:14:55,124 INFO L714 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-11-28 03:14:55,124 INFO L594 BuchiCegarLoop]: Abstraction has 28 states and 43 transitions. [2020-11-28 03:14:55,124 INFO L427 BuchiCegarLoop]: ======== Iteration 4============ [2020-11-28 03:14:55,124 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 28 states and 43 transitions. [2020-11-28 03:14:55,125 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:14:55,125 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:55,125 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:55,126 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2020-11-28 03:14:55,126 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:55,126 INFO L794 eck$LassoCheckResult]: Stem: 384#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 385#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 410#L19 assume main_~x~0 > 0; 395#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2020-11-28 03:14:55,126 INFO L796 eck$LassoCheckResult]: Loop: 393#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 390#L19 assume main_~x~0 > 0; 391#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 393#L27-2 [2020-11-28 03:14:55,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,126 INFO L82 PathProgramCache]: Analyzing trace with hash 963341, now seen corresponding path program 2 times [2020-11-28 03:14:55,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1688860625] [2020-11-28 03:14:55,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,131 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,143 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,144 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,145 INFO L82 PathProgramCache]: Analyzing trace with hash 39820, now seen corresponding path program 1 times [2020-11-28 03:14:55,145 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,145 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2106991015] [2020-11-28 03:14:55,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,149 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,151 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,153 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,154 INFO L82 PathProgramCache]: Analyzing trace with hash -1365869312, now seen corresponding path program 3 times [2020-11-28 03:14:55,155 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,155 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1795422079] [2020-11-28 03:14:55,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,169 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,185 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,187 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,228 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:55,229 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:55,229 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:55,229 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:55,229 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:55,229 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,229 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:55,229 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:55,229 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-11-28 03:14:55,229 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:55,229 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:55,231 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 03:14:55,236 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 03:14:55,243 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 03:14:55,251 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 03:14:55,254 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 03:14:55,328 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:55,328 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:55,337 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:55,337 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 34 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,341 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:55,341 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:55,387 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:55,387 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 03:14:55,391 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:55,392 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Honda state: {ULTIMATE.start_main_~y~0=4, ULTIMATE.start_main_#t~nondet3=4} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:55,429 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:55,429 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 36 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:55,468 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:55,468 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 37 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,491 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:55,493 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:55,493 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:55,493 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:55,493 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:55,493 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:55,493 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,493 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:55,493 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:55,493 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration4_Loop [2020-11-28 03:14:55,493 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:55,493 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:55,494 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 03:14:55,501 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:55,503 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 03:14:55,509 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 03:14:55,512 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2020-11-28 03:14:55,648 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:55,648 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:55,651 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 03:14:55,653 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:55,653 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:55,653 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:55,653 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:55,653 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:55,654 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:55,654 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 38 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,657 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:55,686 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 03:14:55,687 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:55,687 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:55,687 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:55,687 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:55,690 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:55,690 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. [2020-11-28 03:14:55,696 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:55,742 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 03:14:55,744 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:55,744 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:55,744 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:55,744 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:55,744 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:55,747 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:55,747 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. Waiting until toolchain timeout for monitored process 40 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,750 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:55,754 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:14:55,754 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:55,758 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:55,758 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:55,758 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:55,758 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = 1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 41 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,785 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:55,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:55,803 INFO L263 TraceCheckSpWp]: Trace formula consists of 14 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:55,803 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:55,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:55,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 10 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:55,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:55,837 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 03:14:55,838 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 03:14:55,838 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21 Second operand 4 states. [2020-11-28 03:14:55,866 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 28 states and 43 transitions. cyclomatic complexity: 21. Second operand 4 states. Result 35 states and 52 transitions. Complement of second has 6 states. [2020-11-28 03:14:55,866 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 03:14:55,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:55,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 14 transitions. [2020-11-28 03:14:55,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 3 letters. [2020-11-28 03:14:55,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 7 letters. Loop has 3 letters. [2020-11-28 03:14:55,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,867 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 14 transitions. Stem has 4 letters. Loop has 6 letters. [2020-11-28 03:14:55,867 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:55,868 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 52 transitions. [2020-11-28 03:14:55,869 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:14:55,870 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 52 transitions. [2020-11-28 03:14:55,870 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 13 [2020-11-28 03:14:55,870 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 14 [2020-11-28 03:14:55,870 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 52 transitions. [2020-11-28 03:14:55,870 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:55,870 INFO L691 BuchiCegarLoop]: Abstraction has 35 states and 52 transitions. [2020-11-28 03:14:55,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 52 transitions. [2020-11-28 03:14:55,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 33. [2020-11-28 03:14:55,880 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-28 03:14:55,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 50 transitions. [2020-11-28 03:14:55,883 INFO L714 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-11-28 03:14:55,883 INFO L594 BuchiCegarLoop]: Abstraction has 33 states and 50 transitions. [2020-11-28 03:14:55,883 INFO L427 BuchiCegarLoop]: ======== Iteration 5============ [2020-11-28 03:14:55,883 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 33 states and 50 transitions. [2020-11-28 03:14:55,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2020-11-28 03:14:55,888 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:55,888 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:55,889 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1] [2020-11-28 03:14:55,889 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:55,889 INFO L794 eck$LassoCheckResult]: Stem: 491#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 492#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 518#L19 assume main_~x~0 > 0; 498#L20 assume 0 != main_#t~nondet2;havoc main_#t~nondet2;main_~x~0 := main_~x~0 - 1;main_~y~0 := main_#t~nondet3;havoc main_#t~nondet3; 521#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2020-11-28 03:14:55,889 INFO L796 eck$LassoCheckResult]: Loop: 502#L19 assume main_~x~0 > 0; 504#L20 assume !(0 != main_#t~nondet2);havoc main_#t~nondet2;main_~y~0 := main_~y~0 - 1; 501#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 502#L19 [2020-11-28 03:14:55,889 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,890 INFO L82 PathProgramCache]: Analyzing trace with hash 29863581, now seen corresponding path program 4 times [2020-11-28 03:14:55,890 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,890 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67510618] [2020-11-28 03:14:55,890 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,898 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,908 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,909 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,912 INFO L82 PathProgramCache]: Analyzing trace with hash 42852, now seen corresponding path program 2 times [2020-11-28 03:14:55,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,912 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330459479] [2020-11-28 03:14:55,912 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,925 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,928 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,929 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:55,934 INFO L82 PathProgramCache]: Analyzing trace with hash 607724360, now seen corresponding path program 1 times [2020-11-28 03:14:55,934 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:55,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659159144] [2020-11-28 03:14:55,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:55,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,940 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:55,944 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:55,946 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:55,971 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:55,972 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:55,972 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:55,972 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:55,972 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:55,972 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:55,972 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:55,972 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:55,972 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-11-28 03:14:55,972 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:55,972 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:55,973 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 03:14:55,979 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 03:14:55,985 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 03:14:55,988 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 03:14:55,991 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 03:14:56,044 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:56,045 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:56,048 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,048 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 42 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:56,051 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:56,051 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet2=0} Honda state: {ULTIMATE.start_main_#t~nondet2=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) [2020-11-28 03:14:56,088 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,088 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 43 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,131 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:56,131 INFO L160 nArgumentSynthesizer]: Using integer mode. Waiting until toolchain timeout for monitored process 44 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:56,190 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:56,192 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:56,192 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:56,192 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:56,192 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:56,192 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:56,192 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:56,192 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:56,192 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:56,192 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration5_Loop [2020-11-28 03:14:56,192 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:56,192 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:56,193 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 03:14:56,196 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 03:14:56,201 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 03:14:56,205 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 03:14:56,208 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 03:14:56,258 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:56,258 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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) Waiting until toolchain timeout for monitored process 45 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:56,266 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 03:14:56,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:56,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:56,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:56,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:56,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:56,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:56,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:56,270 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,292 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 03:14:56,293 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:56,293 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:56,293 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:56,294 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:56,294 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:56,294 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:56,294 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:56,303 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:56,305 INFO L443 ModelExtractionUtils]: Simplification made 2 calls to the SMT solver. [2020-11-28 03:14:56,306 INFO L444 ModelExtractionUtils]: 1 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,308 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:56,308 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:56,308 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:56,308 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~y~0) = 1*ULTIMATE.start_main_~y~0 Supporting invariants [] [2020-11-28 03:14:56,328 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:56,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,346 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,346 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,357 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,358 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,358 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,374 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 03:14:56,375 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 03:14:56,375 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-28 03:14:56,423 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2020-11-28 03:14:56,432 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 03:14:56,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:56,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:14:56,433 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:14:56,433 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:56,433 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:14:56,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,452 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,464 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,503 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 03:14:56,504 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:14:56,504 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-28 03:14:56,554 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 57 states and 89 transitions. Complement of second has 7 states. [2020-11-28 03:14:56,557 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 03:14:56,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:56,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 11 transitions. [2020-11-28 03:14:56,558 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 11 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:14:56,558 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:56,558 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:14:56,629 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,654 INFO L263 TraceCheckSpWp]: Trace formula consists of 16 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,655 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:56,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:56,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:56,678 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 03:14:56,678 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 2 loop predicates [2020-11-28 03:14:56,679 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24 Second operand 4 states. [2020-11-28 03:14:56,706 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 33 states and 50 transitions. cyclomatic complexity: 24. Second operand 4 states. Result 59 states and 92 transitions. Complement of second has 8 states. [2020-11-28 03:14:56,708 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 03:14:56,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-11-28 03:14:56,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 18 transitions. [2020-11-28 03:14:56,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 3 letters. [2020-11-28 03:14:56,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:56,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 8 letters. Loop has 3 letters. [2020-11-28 03:14:56,709 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:56,709 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 18 transitions. Stem has 5 letters. Loop has 6 letters. [2020-11-28 03:14:56,710 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:56,710 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 92 transitions. [2020-11-28 03:14:56,713 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:14:56,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 17 states and 21 transitions. [2020-11-28 03:14:56,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 6 [2020-11-28 03:14:56,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 7 [2020-11-28 03:14:56,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 21 transitions. [2020-11-28 03:14:56,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2020-11-28 03:14:56,715 INFO L691 BuchiCegarLoop]: Abstraction has 17 states and 21 transitions. [2020-11-28 03:14:56,715 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states and 21 transitions. [2020-11-28 03:14:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2020-11-28 03:14:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-11-28 03:14:56,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 19 transitions. [2020-11-28 03:14:56,716 INFO L714 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-28 03:14:56,716 INFO L594 BuchiCegarLoop]: Abstraction has 15 states and 19 transitions. [2020-11-28 03:14:56,716 INFO L427 BuchiCegarLoop]: ======== Iteration 6============ [2020-11-28 03:14:56,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 15 states and 19 transitions. [2020-11-28 03:14:56,717 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2020-11-28 03:14:56,717 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2020-11-28 03:14:56,717 INFO L119 BuchiIsEmpty]: Starting construction of run [2020-11-28 03:14:56,718 INFO L852 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1] [2020-11-28 03:14:56,718 INFO L853 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2020-11-28 03:14:56,718 INFO L794 eck$LassoCheckResult]: Stem: 812#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~nondet4, main_#t~nondet5, main_~x~0, main_~y~0;havoc main_~x~0;havoc main_~y~0;main_~x~0 := main_#t~nondet0;havoc main_#t~nondet0;main_~y~0 := main_#t~nondet1;havoc main_#t~nondet1; 813#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 818#L19 assume !(main_~x~0 > 0); 819#L27 assume !(0 != main_#t~nondet4);havoc main_#t~nondet4;main_~y~0 := main_~y~0 - 1;main_~x~0 := main_#t~nondet5;havoc main_#t~nondet5; 825#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 823#L19 assume !(main_~x~0 > 0); 814#L27 [2020-11-28 03:14:56,718 INFO L796 eck$LassoCheckResult]: Loop: 814#L27 assume 0 != main_#t~nondet4;havoc main_#t~nondet4;main_~x~0 := 1 + main_~x~0; 815#L27-2 assume !!(0 != main_~x~0 && main_~y~0 > 0); 824#L19 assume !(main_~x~0 > 0); 814#L27 [2020-11-28 03:14:56,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,718 INFO L82 PathProgramCache]: Analyzing trace with hash 926018970, now seen corresponding path program 1 times [2020-11-28 03:14:56,719 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,719 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [792183590] [2020-11-28 03:14:56,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,723 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,727 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,728 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:56,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,729 INFO L82 PathProgramCache]: Analyzing trace with hash 53186, now seen corresponding path program 3 times [2020-11-28 03:14:56,729 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,729 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1485344310] [2020-11-28 03:14:56,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,732 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,735 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:56,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:56,736 INFO L82 PathProgramCache]: Analyzing trace with hash 456216457, now seen corresponding path program 1 times [2020-11-28 03:14:56,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-28 03:14:56,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [140502260] [2020-11-28 03:14:56,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-28 03:14:56,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,742 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-28 03:14:56,747 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-28 03:14:56,748 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-28 03:14:56,771 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:56,771 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:56,771 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:56,771 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:56,771 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2020-11-28 03:14:56,771 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:56,771 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:56,771 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:56,771 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-11-28 03:14:56,772 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:56,772 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:56,776 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 03:14:56,783 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 03:14:56,787 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 03:14:56,790 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 03:14:56,805 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 03:14:56,882 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:56,882 INFO L404 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,884 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,885 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:56,887 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:56,887 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_#t~nondet4=7} Honda state: {ULTIMATE.start_main_#t~nondet4=7} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,910 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,910 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:56,918 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:56,918 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,941 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,941 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:56,944 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:56,944 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_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,971 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,971 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:56,974 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2020-11-28 03:14:56,974 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_main_~y~0=1} Honda state: {ULTIMATE.start_main_~y~0=1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/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 03:14:56,997 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2020-11-28 03:14:56,997 INFO L160 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 53 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,021 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2020-11-28 03:14:57,021 INFO L160 nArgumentSynthesizer]: Using integer mode. [2020-11-28 03:14:57,078 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2020-11-28 03:14:57,079 INFO L210 LassoAnalysis]: Preferences: [2020-11-28 03:14:57,079 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2020-11-28 03:14:57,079 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2020-11-28 03:14:57,079 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2020-11-28 03:14:57,079 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2020-11-28 03:14:57,079 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,080 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2020-11-28 03:14:57,080 INFO L132 ssoRankerPreferences]: Path of dumped script: [2020-11-28 03:14:57,080 INFO L133 ssoRankerPreferences]: Filename of dumped script: UrbanMine-ESOP2014-Fig3.c_Iteration6_Loop [2020-11-28 03:14:57,080 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2020-11-28 03:14:57,080 INFO L274 LassoAnalysis]: Starting lasso preprocessing... [2020-11-28 03:14:57,081 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 03:14:57,084 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 03:14:57,087 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 03:14:57,090 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 03:14:57,097 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 03:14:57,163 INFO L292 LassoAnalysis]: Preprocessing complete. [2020-11-28 03:14:57,163 INFO L489 LassoAnalysis]: Using template 'affine'. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 54 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,168 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 03:14:57,169 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:57,169 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:57,169 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:57,169 INFO L204 nArgumentSynthesizer]: 2 loop disjuncts [2020-11-28 03:14:57,170 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:57,170 INFO L401 nArgumentSynthesizer]: We have 4 Motzkin's Theorem applications. [2020-11-28 03:14:57,170 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:57,191 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:57,228 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 03:14:57,230 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:57,230 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:57,230 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:57,230 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:57,232 INFO L401 nArgumentSynthesizer]: We have 6 Motzkin's Theorem applications. [2020-11-28 03:14:57,232 INFO L402 nArgumentSynthesizer]: A total of 2 supporting invariants were added. Waiting until toolchain timeout for monitored process 55 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,236 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 56 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,266 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 03:14:57,267 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:57,267 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:57,268 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:57,268 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:57,268 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:57,268 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:57,268 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:57,269 INFO L522 LassoAnalysis]: Proving termination failed for this template and these settings. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 57 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,291 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 03:14:57,292 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2020-11-28 03:14:57,292 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2020-11-28 03:14:57,292 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2020-11-28 03:14:57,292 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2020-11-28 03:14:57,292 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2020-11-28 03:14:57,293 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2020-11-28 03:14:57,293 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2020-11-28 03:14:57,294 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2020-11-28 03:14:57,297 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2020-11-28 03:14:57,297 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 1 variables to zero. No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_65178cc3-af96-4d3a-bbd3-68eb259a214b/bin/uautomizer/z3 Starting monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2020-11-28 03:14:57,299 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2020-11-28 03:14:57,299 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2020-11-28 03:14:57,299 INFO L510 LassoAnalysis]: Proved termination. [2020-11-28 03:14:57,299 INFO L512 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_main_~x~0) = -1*ULTIMATE.start_main_~x~0 Supporting invariants [] Waiting until toolchain timeout for monitored process 58 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2020-11-28 03:14:57,320 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2020-11-28 03:14:57,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,353 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,363 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,364 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,381 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 03:14:57,382 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 03:14:57,382 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 03:14:57,403 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2020-11-28 03:14:57,405 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 03:14:57,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:14:57,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-28 03:14:57,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:14:57,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:57,406 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:14:57,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,422 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,422 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,429 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,441 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 03:14:57,441 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and with honda bouncer for loop.1 stem predicates 2 loop predicates [2020-11-28 03:14:57,441 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 03:14:57,457 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 22 states and 26 transitions. Complement of second has 5 states. [2020-11-28 03:14:57,458 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 03:14:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:14:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 6 transitions. [2020-11-28 03:14:57,458 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 6 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:14:57,459 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:57,459 INFO L639 RefineBuchi]: Bad chosen interpolant automaton: word not accepted [2020-11-28 03:14:57,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-28 03:14:57,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 18 conjuncts, 2 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-28 03:14:57,495 WARN L261 TraceCheckSpWp]: Trace formula consists of 8 conjuncts, 4 conjunts are in the unsatisfiable core [2020-11-28 03:14:57,495 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-11-28 03:14:57,507 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 03:14:57,507 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 2 loop predicates [2020-11-28 03:14:57,508 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7 Second operand 3 states. [2020-11-28 03:14:57,528 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 15 states and 19 transitions. cyclomatic complexity: 7. Second operand 3 states. Result 27 states and 32 transitions. Complement of second has 4 states. [2020-11-28 03:14:57,530 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 03:14:57,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-11-28 03:14:57,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 9 transitions. [2020-11-28 03:14:57,530 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 3 letters. [2020-11-28 03:14:57,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:57,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 9 letters. Loop has 3 letters. [2020-11-28 03:14:57,531 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:57,531 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 9 transitions. Stem has 6 letters. Loop has 6 letters. [2020-11-28 03:14:57,532 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2020-11-28 03:14:57,532 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 27 states and 32 transitions. [2020-11-28 03:14:57,532 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:14:57,532 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 27 states to 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2020-11-28 03:14:57,533 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2020-11-28 03:14:57,533 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-11-28 03:14:57,533 INFO L691 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L714 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L594 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L427 BuchiCegarLoop]: ======== Iteration 7============ [2020-11-28 03:14:57,533 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2020-11-28 03:14:57,533 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2020-11-28 03:14:57,533 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2020-11-28 03:14:57,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 03:14:57 BoogieIcfgContainer [2020-11-28 03:14:57,539 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2020-11-28 03:14:57,539 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-11-28 03:14:57,539 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-11-28 03:14:57,539 INFO L275 PluginConnector]: Witness Printer initialized [2020-11-28 03:14:57,540 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 03:14:51" (3/4) ... [2020-11-28 03:14:57,543 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-11-28 03:14:57,543 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-11-28 03:14:57,545 INFO L168 Benchmark]: Toolchain (without parser) took 6697.63 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 94.3 MB in the beginning and 42.2 MB in the end (delta: 52.1 MB). Peak memory consumption was 77.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:57,545 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:57,545 INFO L168 Benchmark]: CACSL2BoogieTranslator took 238.52 ms. Allocated memory is still 123.7 MB. Free memory was 93.8 MB in the beginning and 100.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:57,546 INFO L168 Benchmark]: Boogie Procedure Inliner took 42.07 ms. Allocated memory is still 123.7 MB. Free memory was 100.8 MB in the beginning and 99.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:57,546 INFO L168 Benchmark]: Boogie Preprocessor took 29.61 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 98.7 MB in the end (delta: 952.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:57,547 INFO L168 Benchmark]: RCFGBuilder took 298.37 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 89.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:57,547 INFO L168 Benchmark]: BuchiAutomizer took 6076.59 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 89.5 MB in the beginning and 42.2 MB in the end (delta: 47.3 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. [2020-11-28 03:14:57,565 INFO L168 Benchmark]: Witness Printer took 4.22 ms. Allocated memory is still 148.9 MB. Free memory is still 42.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-11-28 03:14:57,569 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 79.7 MB. Free memory was 37.7 MB in the beginning and 37.7 MB in the end (delta: 42.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 238.52 ms. Allocated memory is still 123.7 MB. Free memory was 93.8 MB in the beginning and 100.8 MB in the end (delta: -7.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 42.07 ms. Allocated memory is still 123.7 MB. Free memory was 100.8 MB in the beginning and 99.6 MB in the end (delta: 1.1 MB). There was no memory consumed. Max. memory is 16.1 GB. * Boogie Preprocessor took 29.61 ms. Allocated memory is still 123.7 MB. Free memory was 99.6 MB in the beginning and 98.7 MB in the end (delta: 952.8 kB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 298.37 ms. Allocated memory is still 123.7 MB. Free memory was 98.7 MB in the beginning and 89.9 MB in the end (delta: 8.8 MB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. * BuchiAutomizer took 6076.59 ms. Allocated memory was 123.7 MB in the beginning and 148.9 MB in the end (delta: 25.2 MB). Free memory was 89.5 MB in the beginning and 42.2 MB in the end (delta: 47.3 MB). Peak memory consumption was 73.7 MB. Max. memory is 16.1 GB. * Witness Printer took 4.22 ms. Allocated memory is still 148.9 MB. Free memory is still 42.2 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 affine ranking function -1 * x and consists of 5 locations. One deterministic module has affine ranking function y and consists of 4 locations. One deterministic module has affine ranking function -1 * x and consists of 4 locations. One deterministic module has affine ranking function x and consists of 4 locations. One nondeterministic module has affine ranking function y and consists of 4 locations. One nondeterministic module has affine ranking function -1 * x and consists of 3 locations. 1 modules have a trivial ranking function, the largest among these consists of 4 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 6.0s and 7 iterations. TraceHistogramMax:2. Analysis of lassos took 4.7s. Construction of modules took 0.1s. Büchi inclusion checks took 0.9s. Highest rank in rank-based complementation 3. Minimization of det autom 1. Minimization of nondet autom 6. Automata minimization 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 18 StatesRemovedByMinimization, 6 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 33 states and ocurred in iteration 4. Nontrivial modules had stage [4, 0, 2, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 76 SDtfs, 73 SDslu, 32 SDs, 0 SdLazy, 117 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT5 conc0 concLT1 SILN0 SILU0 SILI0 SILT0 lasso0 LassoPreprocessingBenchmarks: Lassos: inital19 mio100 ax162 hnf98 lsp38 ukn100 mio100 lsp100 div100 bol100 ite100 ukn100 eq165 hnf94 smp84 dnf100 smp100 tf112 neg97 sie111 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 30ms VariablesStem: 1 VariablesLoop: 0 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 2 MotzkinApplications: 6 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 17 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 6 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.6s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...