./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 5842f4b8 Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 32bit --witnessprinter.graph.data.programhash 641efd2558246d4ccf383f6f2b7128ac0bea67b9 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-5842f4b [2018-11-18 15:48:59,484 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 15:48:59,485 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 15:48:59,491 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 15:48:59,492 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 15:48:59,492 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 15:48:59,493 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 15:48:59,494 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 15:48:59,495 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 15:48:59,496 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 15:48:59,496 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 15:48:59,497 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 15:48:59,497 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 15:48:59,498 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 15:48:59,498 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 15:48:59,499 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 15:48:59,499 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 15:48:59,500 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 15:48:59,502 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 15:48:59,503 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 15:48:59,503 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 15:48:59,504 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 15:48:59,506 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 15:48:59,506 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 15:48:59,506 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 15:48:59,507 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 15:48:59,507 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 15:48:59,508 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 15:48:59,508 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 15:48:59,509 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 15:48:59,509 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 15:48:59,510 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 15:48:59,510 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 15:48:59,510 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 15:48:59,511 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 15:48:59,511 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 15:48:59,511 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 15:48:59,522 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 15:48:59,523 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 15:48:59,523 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 15:48:59,524 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 15:48:59,524 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 15:48:59,525 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 15:48:59,525 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 15:48:59,526 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 15:48:59,526 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 15:48:59,526 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 15:48:59,527 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 15:48:59,527 INFO L133 SettingsManager]: * TransformationType=MODULO_NEIGHBOR 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/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 641efd2558246d4ccf383f6f2b7128ac0bea67b9 [2018-11-18 15:48:59,545 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 15:48:59,555 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 15:48:59,557 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 15:48:59,558 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 15:48:59,559 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 15:48:59,559 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:48:59,601 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/data/a667df079/7f606525e7e74f9d9c93f1b21bc9d355/FLAGcb7aeac38 [2018-11-18 15:49:00,006 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 15:49:00,007 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:49:00,011 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/data/a667df079/7f606525e7e74f9d9c93f1b21bc9d355/FLAGcb7aeac38 [2018-11-18 15:49:00,021 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/data/a667df079/7f606525e7e74f9d9c93f1b21bc9d355 [2018-11-18 15:49:00,023 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 15:49:00,024 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 15:49:00,025 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 15:49:00,025 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 15:49:00,028 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 15:49:00,029 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,031 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63274aa8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00, skipping insertion in model container [2018-11-18 15:49:00,031 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,036 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 15:49:00,056 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 15:49:00,191 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:49:00,194 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 15:49:00,224 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 15:49:00,232 INFO L195 MainTranslator]: Completed translation [2018-11-18 15:49:00,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00 WrapperNode [2018-11-18 15:49:00,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 15:49:00,233 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 15:49:00,233 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 15:49:00,233 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 15:49:00,238 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,243 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,306 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 15:49:00,307 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 15:49:00,307 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 15:49:00,307 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 15:49:00,312 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,313 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,314 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,317 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,322 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,324 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... [2018-11-18 15:49:00,328 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 15:49:00,328 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 15:49:00,328 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 15:49:00,329 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 15:49:00,329 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:00,366 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 15:49:00,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 15:49:00,661 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 15:49:00,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:49:00 BoogieIcfgContainer [2018-11-18 15:49:00,661 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 15:49:00,662 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 15:49:00,662 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 15:49:00,665 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 15:49:00,665 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:49:00,666 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 03:49:00" (1/3) ... [2018-11-18 15:49:00,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c6f49a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:49:00, skipping insertion in model container [2018-11-18 15:49:00,667 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:49:00,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 03:49:00" (2/3) ... [2018-11-18 15:49:00,667 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@1c6f49a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 03:49:00, skipping insertion in model container [2018-11-18 15:49:00,667 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 15:49:00,667 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:49:00" (3/3) ... [2018-11-18 15:49:00,669 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 15:49:00,704 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 15:49:00,705 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 15:49:00,705 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 15:49:00,705 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 15:49:00,705 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 15:49:00,705 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 15:49:00,705 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 15:49:00,705 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 15:49:00,706 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 15:49:00,717 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states. [2018-11-18 15:49:00,736 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 15:49:00,736 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:00,736 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:00,740 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 15:49:00,740 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:00,740 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 15:49:00,741 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 79 states. [2018-11-18 15:49:00,745 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 15:49:00,745 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:00,745 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:00,746 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 15:49:00,746 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:00,752 INFO L794 eck$LassoCheckResult]: Stem: 45#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 9#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 38#L19true assume !(0 == base2flt_~m % 4294967296); 25#L25true assume !(base2flt_~m % 4294967296 < 16777216); 15#L47-3true [2018-11-18 15:49:00,753 INFO L796 eck$LassoCheckResult]: Loop: 15#L47-3true assume true; 24#L47-1true assume !false; 30#L48true assume base2flt_~m % 4294967296 >= 33554432; 58#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 15#L47-3true [2018-11-18 15:49:00,757 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:00,757 INFO L82 PathProgramCache]: Analyzing trace with hash 925697, now seen corresponding path program 1 times [2018-11-18 15:49:00,759 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:00,760 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:00,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:00,800 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:00,800 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:00,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:00,884 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:49:00,885 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:49:00,888 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:00,888 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:00,889 INFO L82 PathProgramCache]: Analyzing trace with hash 2191759, now seen corresponding path program 1 times [2018-11-18 15:49:00,889 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:00,889 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:00,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:00,890 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:00,890 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:00,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:00,936 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:00,937 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:00,937 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:00,937 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:00,937 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:00,937 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:00,938 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:00,938 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:00,938 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 15:49:00,938 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:00,938 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:00,955 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:00,968 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,063 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:01,064 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:01,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,096 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:49:01,096 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,111 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,111 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,128 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:01,128 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,145 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:01,146 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:01,146 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:01,146 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:01,146 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:01,146 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:01,146 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,146 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:01,147 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:01,147 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 15:49:01,147 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:01,147 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:01,148 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,155 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,221 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:01,224 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:01,225 INFO L122 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 [2018-11-18 15:49:01,226 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:01,226 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:01,227 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:01,227 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:01,227 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:01,229 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:01,229 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:01,237 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:49:01,237 INFO L122 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 [2018-11-18 15:49:01,237 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:01,237 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:01,238 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:01,238 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:01,238 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:01,238 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:01,238 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:01,241 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:01,244 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:01,244 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:01,245 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:01,245 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:01,246 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:01,246 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:49:01,247 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:01,274 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:01,282 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:01,289 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:01,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:01,299 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 15:49:01,300 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 79 states. Second operand 3 states. [2018-11-18 15:49:01,359 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 79 states.. Second operand 3 states. Result 225 states and 364 transitions. Complement of second has 6 states. [2018-11-18 15:49:01,360 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:01,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:49:01,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 242 transitions. [2018-11-18 15:49:01,363 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 242 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 15:49:01,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 242 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-18 15:49:01,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,364 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 242 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-18 15:49:01,364 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,365 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 225 states and 364 transitions. [2018-11-18 15:49:01,373 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 52 [2018-11-18 15:49:01,378 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 225 states to 94 states and 135 transitions. [2018-11-18 15:49:01,379 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2018-11-18 15:49:01,379 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2018-11-18 15:49:01,380 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 135 transitions. [2018-11-18 15:49:01,380 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:01,380 INFO L705 BuchiCegarLoop]: Abstraction has 94 states and 135 transitions. [2018-11-18 15:49:01,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 135 transitions. [2018-11-18 15:49:01,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2018-11-18 15:49:01,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 15:49:01,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2018-11-18 15:49:01,403 INFO L728 BuchiCegarLoop]: Abstraction has 81 states and 121 transitions. [2018-11-18 15:49:01,404 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:49:01,404 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:49:01,405 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand 3 states. [2018-11-18 15:49:01,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:01,447 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2018-11-18 15:49:01,447 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:49:01,448 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2018-11-18 15:49:01,448 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 15:49:01,449 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 15:49:01,449 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-18 15:49:01,449 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-18 15:49:01,449 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 54 transitions. [2018-11-18 15:49:01,450 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:49:01,450 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:49:01,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 54 transitions. [2018-11-18 15:49:01,451 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 15:49:01,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 15:49:01,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 15:49:01,452 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:49:01,452 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 15:49:01,452 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 15:49:01,452 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 54 transitions. [2018-11-18 15:49:01,453 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 15:49:01,453 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:01,453 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:01,454 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:01,454 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:01,454 INFO L794 eck$LassoCheckResult]: Stem: 512#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 483#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 484#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 476#L69 base2flt_#res := base2flt_~__retres4~0; 477#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 506#L19-1 assume !(0 == base2flt_~m % 4294967296); 493#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 480#L47-7 [2018-11-18 15:49:01,454 INFO L796 eck$LassoCheckResult]: Loop: 480#L47-7 assume true; 485#L47-5 assume !false; 486#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 478#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 480#L47-7 [2018-11-18 15:49:01,455 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,455 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689378, now seen corresponding path program 1 times [2018-11-18 15:49:01,455 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:01,455 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:01,455 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,455 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:01,456 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:01,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:01,487 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:49:01,487 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 15:49:01,487 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:01,487 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,487 INFO L82 PathProgramCache]: Analyzing trace with hash 4192719, now seen corresponding path program 1 times [2018-11-18 15:49:01,487 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:01,488 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:01,488 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,488 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:01,489 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,514 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:01,514 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:01,515 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:01,515 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:01,515 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:01,515 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,515 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:01,515 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:01,515 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 15:49:01,515 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:01,515 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:01,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,524 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,598 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:01,598 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,603 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,603 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,625 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:49:01,625 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=-1} Honda state: {ULTIMATE.start_base2flt_~m=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:01,640 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,640 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:01,657 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:01,657 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,674 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:01,675 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:01,675 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:01,675 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:01,675 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:01,675 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:01,675 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,675 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:01,675 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:01,676 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 15:49:01,676 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:01,676 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:01,677 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,683 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,727 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:01,727 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:01,727 INFO L122 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 [2018-11-18 15:49:01,728 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:01,728 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:01,728 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:01,728 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:01,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:01,729 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:01,729 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:01,735 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:49:01,735 INFO L122 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 [2018-11-18 15:49:01,736 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:01,736 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:01,736 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:01,736 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:01,736 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:01,737 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:01,737 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:01,740 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:01,742 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:01,742 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:01,743 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:01,743 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:01,743 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:01,743 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:49:01,743 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:01,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:01,758 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:01,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:01,761 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:01,761 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:01,762 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 15:49:01,762 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-18 15:49:01,776 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 74 states and 96 transitions. Complement of second has 5 states. [2018-11-18 15:49:01,777 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:01,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:49:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2018-11-18 15:49:01,777 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 15:49:01,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 15:49:01,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,778 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 15:49:01,778 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:01,778 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 96 transitions. [2018-11-18 15:49:01,779 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-18 15:49:01,780 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 92 transitions. [2018-11-18 15:49:01,780 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2018-11-18 15:49:01,780 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2018-11-18 15:49:01,780 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 92 transitions. [2018-11-18 15:49:01,781 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:01,781 INFO L705 BuchiCegarLoop]: Abstraction has 71 states and 92 transitions. [2018-11-18 15:49:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 92 transitions. [2018-11-18 15:49:01,782 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-11-18 15:49:01,782 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:49:01,783 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-11-18 15:49:01,783 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-11-18 15:49:01,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 15:49:01,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 15:49:01,783 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 3 states. [2018-11-18 15:49:01,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:01,811 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2018-11-18 15:49:01,812 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 15:49:01,812 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 52 transitions. [2018-11-18 15:49:01,813 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:49:01,813 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 52 transitions. [2018-11-18 15:49:01,813 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 15:49:01,813 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 15:49:01,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 15:49:01,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:49:01,814 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 15:49:01,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 15:49:01,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-11-18 15:49:01,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 15:49:01,816 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-18 15:49:01,816 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 15:49:01,816 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 15:49:01,816 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 15:49:01,816 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 46 transitions. [2018-11-18 15:49:01,817 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:49:01,817 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:01,817 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:01,817 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:01,817 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:01,818 INFO L794 eck$LassoCheckResult]: Stem: 762#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 734#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 735#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 730#L69 base2flt_#res := base2flt_~__retres4~0; 731#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 755#L19-1 assume !(0 == base2flt_~m % 4294967296); 742#L25-1 assume base2flt_~m % 4294967296 < 16777216; 743#L37-3 [2018-11-18 15:49:01,818 INFO L796 eck$LassoCheckResult]: Loop: 743#L37-3 assume true; 740#L27-4 assume !false; 741#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 752#L37-2 assume base2flt_~m % 4294967296 < 16777216; 743#L37-3 [2018-11-18 15:49:01,818 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,818 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689351, now seen corresponding path program 1 times [2018-11-18 15:49:01,818 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:01,818 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:01,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,819 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:01,819 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,829 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,830 INFO L82 PathProgramCache]: Analyzing trace with hash 3361610, now seen corresponding path program 1 times [2018-11-18 15:49:01,830 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:01,830 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:01,830 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,831 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:01,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,835 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:01,835 INFO L82 PathProgramCache]: Analyzing trace with hash -1926521712, now seen corresponding path program 1 times [2018-11-18 15:49:01,836 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:01,836 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:01,836 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,836 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:01,837 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:01,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:01,872 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:01,872 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:01,872 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:01,872 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:01,872 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:01,872 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,872 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:01,873 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:01,873 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 15:49:01,873 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:01,873 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:01,873 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,879 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:01,925 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:01,925 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,938 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,939 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,946 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:49:01,946 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:01,961 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:01,961 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:01,977 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:01,978 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:01,994 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:01,995 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:01,995 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:01,995 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:01,995 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:01,995 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:01,995 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:01,995 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:01,996 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:01,996 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 15:49:01,996 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:01,996 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:01,997 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,001 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,033 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,033 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:02,034 INFO L122 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 [2018-11-18 15:49:02,034 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,034 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,034 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,035 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,035 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,035 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,035 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,037 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:49:02,037 INFO L122 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 [2018-11-18 15:49:02,038 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,038 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,038 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,038 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,038 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,038 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,039 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,040 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:02,041 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:02,042 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:02,042 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:02,042 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:02,042 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:02,042 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:49:02,043 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:02,057 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,062 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,065 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,081 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 [2018-11-18 15:49:02,081 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 15:49:02,087 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 45 states and 56 transitions. Complement of second has 5 states. [2018-11-18 15:49:02,087 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:02,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:49:02,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-18 15:49:02,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 15:49:02,088 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,088 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 15:49:02,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,089 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 15:49:02,089 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,089 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-18 15:49:02,091 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:49:02,091 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2018-11-18 15:49:02,092 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 15:49:02,092 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2018-11-18 15:49:02,092 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 15:49:02,092 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:02,092 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 15:49:02,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 15:49:02,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-18 15:49:02,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 15:49:02,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-18 15:49:02,095 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 15:49:02,095 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 15:49:02,095 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 15:49:02,095 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2018-11-18 15:49:02,095 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:49:02,095 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:02,095 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:02,096 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:02,096 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:02,096 INFO L794 eck$LassoCheckResult]: Stem: 900#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 870#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 871#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 866#L69 base2flt_#res := base2flt_~__retres4~0; 867#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 893#L19-1 assume !(0 == base2flt_~m % 4294967296); 880#L25-1 assume base2flt_~m % 4294967296 < 16777216; 881#L37-3 assume true; 874#L27-4 assume !false; 875#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 884#L69-1 base2flt_#res := base2flt_~__retres4~0; 885#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 888#L19-2 assume !(0 == base2flt_~m % 4294967296); 878#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 865#L47-11 [2018-11-18 15:49:02,098 INFO L796 eck$LassoCheckResult]: Loop: 865#L47-11 assume true; 891#L47-9 assume !false; 892#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 863#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 865#L47-11 [2018-11-18 15:49:02,099 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,099 INFO L82 PathProgramCache]: Analyzing trace with hash 639010956, now seen corresponding path program 1 times [2018-11-18 15:49:02,099 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,099 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,100 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,100 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,129 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,129 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:49:02,130 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:49:02,130 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:02,130 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,130 INFO L82 PathProgramCache]: Analyzing trace with hash 6193679, now seen corresponding path program 1 times [2018-11-18 15:49:02,130 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,130 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,131 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,131 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,152 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,152 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,152 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,152 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,153 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:02,153 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,153 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,153 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,153 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 15:49:02,153 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,153 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,154 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,157 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,215 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,215 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,219 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:02,220 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 12 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 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,237 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:02,238 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:02,254 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:02,255 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,255 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,255 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,255 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,255 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:02,256 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,256 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,256 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,256 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 15:49:02,256 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,256 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,256 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,260 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,299 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,299 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:02,300 INFO L122 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 [2018-11-18 15:49:02,300 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,300 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,300 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,300 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,301 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,301 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,301 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,303 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:02,307 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:02,308 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:02,308 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:02,308 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:02,308 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:02,308 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:49:02,308 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:02,317 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,324 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,330 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,330 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 15:49:02,330 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-18 15:49:02,343 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15. Second operand 3 states. Result 61 states and 74 transitions. Complement of second has 5 states. [2018-11-18 15:49:02,343 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:02,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:49:02,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2018-11-18 15:49:02,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 15:49:02,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 18 letters. Loop has 4 letters. [2018-11-18 15:49:02,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,344 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 8 letters. [2018-11-18 15:49:02,344 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,345 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 74 transitions. [2018-11-18 15:49:02,345 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 15:49:02,346 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 58 states and 70 transitions. [2018-11-18 15:49:02,346 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2018-11-18 15:49:02,346 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-18 15:49:02,346 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 70 transitions. [2018-11-18 15:49:02,346 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:02,346 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 70 transitions. [2018-11-18 15:49:02,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 70 transitions. [2018-11-18 15:49:02,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2018-11-18 15:49:02,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:49:02,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2018-11-18 15:49:02,348 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-18 15:49:02,349 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:49:02,349 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:49:02,349 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 4 states. [2018-11-18 15:49:02,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:02,387 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-18 15:49:02,387 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:49:02,387 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2018-11-18 15:49:02,387 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 15:49:02,388 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 59 transitions. [2018-11-18 15:49:02,388 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-18 15:49:02,388 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2018-11-18 15:49:02,388 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 59 transitions. [2018-11-18 15:49:02,388 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:02,388 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 59 transitions. [2018-11-18 15:49:02,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 59 transitions. [2018-11-18 15:49:02,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-11-18 15:49:02,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 15:49:02,391 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 15:49:02,391 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 15:49:02,391 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 15:49:02,391 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 15:49:02,391 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 55 transitions. [2018-11-18 15:49:02,392 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 15:49:02,392 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:02,392 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:02,392 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:02,392 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:02,392 INFO L794 eck$LassoCheckResult]: Stem: 1178#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1146#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1147#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1142#L69 base2flt_#res := base2flt_~__retres4~0; 1143#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1168#L19-1 assume !(0 == base2flt_~m % 4294967296); 1157#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1158#L37-3 assume true; 1152#L27-4 assume !false; 1153#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1167#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1175#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1161#L69-1 base2flt_#res := base2flt_~__retres4~0; 1162#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1165#L19-2 assume !(0 == base2flt_~m % 4294967296); 1154#L25-2 assume base2flt_~m % 4294967296 < 16777216; 1156#L37-5 [2018-11-18 15:49:02,392 INFO L796 eck$LassoCheckResult]: Loop: 1156#L37-5 assume true; 1176#L27-7 assume !false; 1163#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1164#L37-4 assume base2flt_~m % 4294967296 < 16777216; 1156#L37-5 [2018-11-18 15:49:02,392 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,392 INFO L82 PathProgramCache]: Analyzing trace with hash 706889747, now seen corresponding path program 1 times [2018-11-18 15:49:02,392 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,392 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,393 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,393 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,433 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 15:49:02,433 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 15:49:02,433 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:02,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,434 INFO L82 PathProgramCache]: Analyzing trace with hash 5362570, now seen corresponding path program 1 times [2018-11-18 15:49:02,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,434 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,434 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,457 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,457 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,458 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,458 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,458 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:02,458 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,458 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,458 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,458 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 15:49:02,458 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,458 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,459 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,501 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,501 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:02,503 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:02,503 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:02,510 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:49:02,510 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,526 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:02,526 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:02,543 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:02,543 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:02,559 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:02,560 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,560 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,560 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,560 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,560 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:02,560 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,560 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,561 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,561 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 15:49:02,561 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,561 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,561 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,565 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,592 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,592 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:02,592 INFO L122 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 [2018-11-18 15:49:02,593 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,593 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,593 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,593 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,593 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,594 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,594 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,595 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:49:02,595 INFO L122 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 [2018-11-18 15:49:02,596 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,596 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,596 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,596 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,596 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,596 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,596 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,598 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:02,599 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:02,599 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:02,599 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:02,599 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:02,599 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:02,599 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:49:02,600 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:02,608 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,618 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,623 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,638 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 [2018-11-18 15:49:02,638 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-18 15:49:02,648 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 66 states and 79 transitions. Complement of second has 5 states. [2018-11-18 15:49:02,649 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:02,649 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:49:02,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-18 15:49:02,649 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-18 15:49:02,650 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 20 letters. Loop has 4 letters. [2018-11-18 15:49:02,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,651 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-18 15:49:02,651 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:02,651 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 79 transitions. [2018-11-18 15:49:02,652 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 15:49:02,652 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 63 states and 75 transitions. [2018-11-18 15:49:02,652 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-18 15:49:02,653 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2018-11-18 15:49:02,653 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2018-11-18 15:49:02,653 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:02,653 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 75 transitions. [2018-11-18 15:49:02,653 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2018-11-18 15:49:02,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2018-11-18 15:49:02,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 15:49:02,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2018-11-18 15:49:02,659 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2018-11-18 15:49:02,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 15:49:02,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 15:49:02,659 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2018-11-18 15:49:02,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:02,725 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2018-11-18 15:49:02,725 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 15:49:02,726 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 72 transitions. [2018-11-18 15:49:02,726 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:49:02,727 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 60 states and 72 transitions. [2018-11-18 15:49:02,727 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 15:49:02,727 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 15:49:02,727 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 72 transitions. [2018-11-18 15:49:02,727 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:02,727 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-11-18 15:49:02,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 72 transitions. [2018-11-18 15:49:02,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-11-18 15:49:02,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 15:49:02,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-18 15:49:02,730 INFO L728 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 15:49:02,730 INFO L608 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 15:49:02,730 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 15:49:02,731 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 64 transitions. [2018-11-18 15:49:02,731 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 15:49:02,731 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:02,731 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:02,731 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:02,731 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:02,732 INFO L794 eck$LassoCheckResult]: Stem: 1484#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1447#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1448#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1443#L69 base2flt_#res := base2flt_~__retres4~0; 1444#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1474#L19-1 assume !(0 == base2flt_~m % 4294967296); 1458#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1459#L37-3 assume true; 1453#L27-4 assume !false; 1454#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1469#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1488#L37-3 assume true; 1451#L27-4 assume !false; 1452#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1462#L69-1 base2flt_#res := base2flt_~__retres4~0; 1463#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1467#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1440#L69-2 base2flt_#res := base2flt_~__retres4~0; 1460#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1468#L19-3 assume !(0 == base2flt_~m % 4294967296); 1449#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1450#L47-15 [2018-11-18 15:49:02,732 INFO L796 eck$LassoCheckResult]: Loop: 1450#L47-15 assume true; 1483#L47-13 assume !false; 1485#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1461#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1450#L47-15 [2018-11-18 15:49:02,732 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,732 INFO L82 PathProgramCache]: Analyzing trace with hash -241412798, now seen corresponding path program 1 times [2018-11-18 15:49:02,732 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,732 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,733 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,733 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,776 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,776 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:49:02,777 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:49:02,797 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:02,812 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:02,817 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:02,843 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:49:02,843 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-18 15:49:02,843 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:02,843 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:02,843 INFO L82 PathProgramCache]: Analyzing trace with hash 8194639, now seen corresponding path program 1 times [2018-11-18 15:49:02,844 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:02,844 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:02,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,844 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:02,844 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:02,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:02,863 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,863 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,864 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,864 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,864 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:02,864 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,864 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,864 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,864 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 15:49:02,864 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,864 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,865 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,871 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,908 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,908 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:02,909 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:02,910 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/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 [2018-11-18 15:49:02,926 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:02,926 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:02,943 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:02,944 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:02,945 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:02,945 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:02,945 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:02,945 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:02,945 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:02,945 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:02,945 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:02,945 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 15:49:02,945 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:02,945 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:02,945 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,948 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:02,990 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:02,990 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:02,991 INFO L122 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 [2018-11-18 15:49:02,991 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:02,991 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:02,992 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:02,992 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:02,992 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:02,992 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:02,992 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:02,994 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:02,995 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:02,995 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:02,995 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:02,996 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:02,996 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:02,996 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-18 15:49:02,996 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:03,010 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:03,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,022 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:03,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,027 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:03,027 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:03,027 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 15:49:03,028 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17 Second operand 3 states. [2018-11-18 15:49:03,038 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17. Second operand 3 states. Result 56 states and 69 transitions. Complement of second has 4 states. [2018-11-18 15:49:03,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:03,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 15:49:03,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2018-11-18 15:49:03,039 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 4 letters. [2018-11-18 15:49:03,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 25 letters. Loop has 4 letters. [2018-11-18 15:49:03,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,040 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 8 letters. [2018-11-18 15:49:03,040 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,040 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2018-11-18 15:49:03,041 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:49:03,041 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 48 states and 59 transitions. [2018-11-18 15:49:03,042 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-18 15:49:03,042 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-18 15:49:03,042 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 59 transitions. [2018-11-18 15:49:03,042 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:03,042 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 15:49:03,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 59 transitions. [2018-11-18 15:49:03,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 15:49:03,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 15:49:03,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2018-11-18 15:49:03,044 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 15:49:03,044 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 15:49:03,044 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 15:49:03,044 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 5 states. [2018-11-18 15:49:03,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:03,093 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 15:49:03,093 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 15:49:03,093 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 66 transitions. [2018-11-18 15:49:03,094 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:49:03,094 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 63 transitions. [2018-11-18 15:49:03,094 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 15:49:03,094 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-18 15:49:03,094 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 63 transitions. [2018-11-18 15:49:03,094 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 15:49:03,094 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-18 15:49:03,095 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 63 transitions. [2018-11-18 15:49:03,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-11-18 15:49:03,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 15:49:03,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-18 15:49:03,096 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 15:49:03,096 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 15:49:03,096 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 15:49:03,096 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 58 transitions. [2018-11-18 15:49:03,097 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 15:49:03,097 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 15:49:03,097 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 15:49:03,097 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 15:49:03,097 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 15:49:03,097 INFO L794 eck$LassoCheckResult]: Stem: 1851#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1816#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1817#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1812#L69 base2flt_#res := base2flt_~__retres4~0; 1813#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1838#L19-1 assume !(0 == base2flt_~m % 4294967296); 1826#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1827#L37-3 assume true; 1855#L27-4 assume !false; 1836#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1837#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1853#L37-3 assume true; 1821#L27-4 assume !false; 1822#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1854#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1845#L63-1 base2flt_~m := ~bitwiseAnd(base2flt_~m, ~bitwiseComplement(16777216));base2flt_~res~0 := ~bitwiseOr(base2flt_~m, 16777216 * (128 + base2flt_~e));base2flt_~__retres4~0 := base2flt_~res~0; 1829#L69-1 base2flt_#res := base2flt_~__retres4~0; 1830#L70-1 main_#t~ret5 := base2flt_#res;assume { :end_inline_base2flt } true;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~ma~2, main_~ea~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1834#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1809#L69-2 base2flt_#res := base2flt_~__retres4~0; 1828#L70-2 main_#t~ret6 := base2flt_#res;assume { :end_inline_base2flt } true;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := main_~mb~2, main_~eb~2;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 1835#L19-3 assume !(0 == base2flt_~m % 4294967296); 1818#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1814#L37-7 [2018-11-18 15:49:03,098 INFO L796 eck$LassoCheckResult]: Loop: 1814#L37-7 assume true; 1815#L27-10 assume !false; 1843#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1848#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1814#L37-7 [2018-11-18 15:49:03,098 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:03,098 INFO L82 PathProgramCache]: Analyzing trace with hash 476429317, now seen corresponding path program 1 times [2018-11-18 15:49:03,098 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:03,098 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:03,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:03,099 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:03,099 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:03,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,138 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:03,138 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 15:49:03,138 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-11-18 15:49:03,145 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:03,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,154 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:03,165 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:03,180 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 15:49:03,180 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 15:49:03,180 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 15:49:03,181 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:03,181 INFO L82 PathProgramCache]: Analyzing trace with hash 7363530, now seen corresponding path program 1 times [2018-11-18 15:49:03,181 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 15:49:03,181 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 15:49:03,181 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:03,182 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 15:49:03,182 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 15:49:03,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:03,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 15:49:03,193 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:03,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:03,193 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:03,193 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:03,193 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 15:49:03,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:03,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:03,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:03,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 15:49:03,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:03,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:03,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:03,197 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:03,223 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:03,223 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:03,225 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:03,225 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:03,234 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 15:49:03,234 INFO L448 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m=0} Honda state: {ULTIMATE.start_base2flt_~m=0} Generalized eigenvectors: [] Lambdas: [] Nus: [] No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:03,250 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 15:49:03,250 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_b02760a6-0883-4595-93a8-54497a9654c4/bin-2019/uautomizer/z3 Starting monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:03,267 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 15:49:03,267 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 15:49:03,283 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 15:49:03,284 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 15:49:03,285 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 15:49:03,285 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 15:49:03,285 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 15:49:03,285 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 15:49:03,285 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 15:49:03,285 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 15:49:03,285 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 15:49:03,285 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 15:49:03,285 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 15:49:03,285 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 15:49:03,286 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:03,293 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-18 15:49:03,322 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 15:49:03,322 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 15:49:03,322 INFO L122 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 [2018-11-18 15:49:03,323 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:03,323 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:03,323 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:03,323 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:03,323 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:03,323 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:03,323 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:03,324 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 15:49:03,324 INFO L122 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 [2018-11-18 15:49:03,325 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 15:49:03,325 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 15:49:03,325 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 15:49:03,325 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 15:49:03,325 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 15:49:03,325 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 15:49:03,325 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 15:49:03,326 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 15:49:03,327 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 15:49:03,327 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 15:49:03,327 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 15:49:03,328 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 15:49:03,328 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 15:49:03,328 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-18 15:49:03,328 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 15:49:03,342 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 15:49:03,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,352 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 15:49:03,356 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 15:49:03,363 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 15:49:03,364 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 [2018-11-18 15:49:03,364 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 15:49:03,367 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14. Second operand 4 states. Result 53 states and 64 transitions. Complement of second has 4 states. [2018-11-18 15:49:03,368 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-18 15:49:03,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 15:49:03,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2018-11-18 15:49:03,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 4 letters. [2018-11-18 15:49:03,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 15:49:03,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,369 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 8 letters. [2018-11-18 15:49:03,369 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 15:49:03,370 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 64 transitions. [2018-11-18 15:49:03,370 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:49:03,370 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 0 states and 0 transitions. [2018-11-18 15:49:03,370 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:49:03,370 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:49:03,370 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:49:03,371 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:49:03,371 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:49:03,371 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:49:03,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 15:49:03,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 15:49:03,371 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-18 15:49:03,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 15:49:03,371 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 15:49:03,371 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 15:49:03,371 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 15:49:03,371 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:49:03,372 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 15:49:03,372 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 15:49:03,372 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 15:49:03,372 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 15:49:03,372 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 15:49:03,372 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 15:49:03,372 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 15:49:03,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 03:49:03 BoogieIcfgContainer [2018-11-18 15:49:03,378 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 15:49:03,378 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 15:49:03,378 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 15:49:03,379 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 15:49:03,379 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 03:49:00" (3/4) ... [2018-11-18 15:49:03,382 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 15:49:03,382 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 15:49:03,383 INFO L168 Benchmark]: Toolchain (without parser) took 3359.06 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 959.2 MB in the beginning and 880.1 MB in the end (delta: 79.1 MB). Peak memory consumption was 212.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,384 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:49:03,384 INFO L168 Benchmark]: CACSL2BoogieTranslator took 208.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 943.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,385 INFO L168 Benchmark]: Boogie Procedure Inliner took 73.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,385 INFO L168 Benchmark]: Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,386 INFO L168 Benchmark]: RCFGBuilder took 332.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,386 INFO L168 Benchmark]: BuchiAutomizer took 2716.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.1 MB in the end (delta: 214.7 MB). Peak memory consumption was 214.7 MB. Max. memory is 11.5 GB. [2018-11-18 15:49:03,386 INFO L168 Benchmark]: Witness Printer took 3.84 ms. Allocated memory is still 1.2 GB. Free memory is still 880.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 15:49:03,389 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 1.0 GB. Free memory is still 985.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 208.00 ms. Allocated memory is still 1.0 GB. Free memory was 959.2 MB in the beginning and 943.1 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 73.18 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 133.7 MB). Free memory was 943.1 MB in the beginning and 1.1 GB in the end (delta: -190.2 MB). Peak memory consumption was 15.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.49 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 332.91 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 35.8 MB). Peak memory consumption was 35.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2716.65 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 880.1 MB in the end (delta: 214.7 MB). Peak memory consumption was 214.7 MB. Max. memory is 11.5 GB. * Witness Printer took 3.84 ms. Allocated memory is still 1.2 GB. Free memory is still 880.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 6 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.6s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.9s. Construction of modules took 0.2s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 89 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 52 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 587 SDtfs, 386 SDslu, 219 SDs, 0 SdLazy, 229 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div596 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 11ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...