./Ultimate.py --spec ../../sv-benchmarks/c/Termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2_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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 45b185c6c694406b0734db5727dff1b8fd93ebcf ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... 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 13:35:59,691 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-18 13:35:59,692 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-18 13:35:59,699 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-18 13:35:59,699 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-18 13:35:59,699 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-18 13:35:59,700 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-18 13:35:59,701 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-18 13:35:59,702 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-18 13:35:59,703 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-18 13:35:59,703 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-18 13:35:59,704 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-18 13:35:59,704 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-18 13:35:59,705 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-18 13:35:59,706 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-18 13:35:59,706 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-18 13:35:59,707 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-18 13:35:59,708 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-18 13:35:59,709 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-18 13:35:59,711 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-18 13:35:59,711 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-18 13:35:59,712 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-18 13:35:59,714 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-18 13:35:59,714 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-18 13:35:59,714 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-18 13:35:59,715 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-18 13:35:59,715 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-18 13:35:59,716 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-18 13:35:59,716 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-18 13:35:59,717 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-18 13:35:59,717 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-18 13:35:59,718 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-18 13:35:59,718 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-18 13:35:59,718 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-18 13:35:59,719 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-18 13:35:59,719 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-18 13:35:59,720 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-18 13:35:59,728 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-18 13:35:59,728 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-18 13:35:59,729 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-18 13:35:59,729 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-18 13:35:59,729 INFO L133 SettingsManager]: * Use SBE=true [2018-11-18 13:35:59,730 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-18 13:35:59,730 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-18 13:35:59,730 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-18 13:35:59,730 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-18 13:35:59,730 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-18 13:35:59,730 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-18 13:35:59,730 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-18 13:35:59,731 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-18 13:35:59,732 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-18 13:35:59,733 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-18 13:35:59,733 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-18 13:35:59,733 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-18 13:35:59,733 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-18 13:35:59,733 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-18 13:35:59,733 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-18 13:35:59,734 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-18 13:35:59,734 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-11-18 13:35:59,756 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-18 13:35:59,765 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-18 13:35:59,768 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-18 13:35:59,769 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-18 13:35:59,769 INFO L276 PluginConnector]: CDTParser initialized [2018-11-18 13:35:59,770 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 13:35:59,804 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/data/2aa469468/b037dd22d7144e70bf32e3c22358fd7e/FLAG53d603552 [2018-11-18 13:36:00,192 INFO L307 CDTParser]: Found 1 translation units. [2018-11-18 13:36:00,192 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 13:36:00,196 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/data/2aa469468/b037dd22d7144e70bf32e3c22358fd7e/FLAG53d603552 [2018-11-18 13:36:00,205 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/bin-2019/uautomizer/data/2aa469468/b037dd22d7144e70bf32e3c22358fd7e [2018-11-18 13:36:00,207 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-18 13:36:00,208 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-18 13:36:00,208 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-18 13:36:00,208 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-18 13:36:00,210 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-18 13:36:00,211 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,213 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73951530 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00, skipping insertion in model container [2018-11-18 13:36:00,213 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,219 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-18 13:36:00,237 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-18 13:36:00,357 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:36:00,360 INFO L191 MainTranslator]: Completed pre-run [2018-11-18 13:36:00,382 INFO L201 PostProcessor]: Analyzing one entry point: main [2018-11-18 13:36:00,391 INFO L195 MainTranslator]: Completed translation [2018-11-18 13:36:00,392 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00 WrapperNode [2018-11-18 13:36:00,392 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-18 13:36:00,392 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-18 13:36:00,392 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-18 13:36:00,393 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-18 13:36:00,397 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,402 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,456 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-18 13:36:00,456 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-18 13:36:00,456 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-18 13:36:00,457 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-18 13:36:00,465 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,465 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,467 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,471 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,478 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,479 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... [2018-11-18 13:36:00,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-18 13:36:00,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-18 13:36:00,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-18 13:36:00,482 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-18 13:36:00,483 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:00,528 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-18 13:36:00,528 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-18 13:36:00,869 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-18 13:36:00,870 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:36:00 BoogieIcfgContainer [2018-11-18 13:36:00,870 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-18 13:36:00,870 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-18 13:36:00,870 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-18 13:36:00,873 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-18 13:36:00,874 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:36:00,874 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 18.11 01:36:00" (1/3) ... [2018-11-18 13:36:00,875 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5adf52e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:36:00, skipping insertion in model container [2018-11-18 13:36:00,875 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:36:00,875 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.11 01:36:00" (2/3) ... [2018-11-18 13:36:00,876 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@5adf52e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 18.11 01:36:00, skipping insertion in model container [2018-11-18 13:36:00,876 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-18 13:36:00,876 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:36:00" (3/3) ... [2018-11-18 13:36:00,877 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-18 13:36:00,923 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-18 13:36:00,924 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-18 13:36:00,924 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-18 13:36:00,924 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-18 13:36:00,924 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-18 13:36:00,924 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-18 13:36:00,924 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-18 13:36:00,924 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-18 13:36:00,925 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-18 13:36:00,938 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-18 13:36:00,959 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 13:36:00,959 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:00,960 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:00,965 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 13:36:00,965 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:00,965 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-18 13:36:00,965 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 80 states. [2018-11-18 13:36:00,969 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 32 [2018-11-18 13:36:00,969 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:00,969 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:00,969 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2018-11-18 13:36:00,970 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:00,976 INFO L794 eck$LassoCheckResult]: Stem: 39#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true; 7#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 33#L19true assume !(0 == base2flt_~m % 4294967296); 19#L25true assume !(base2flt_~m % 4294967296 < 16777216); 11#L47-3true [2018-11-18 13:36:00,976 INFO L796 eck$LassoCheckResult]: Loop: 11#L47-3true assume true; 18#L47-1true assume !false; 24#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 11#L47-3true [2018-11-18 13:36:00,981 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:00,981 INFO L82 PathProgramCache]: Analyzing trace with hash 925697, now seen corresponding path program 1 times [2018-11-18 13:36:00,983 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:00,983 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:01,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:01,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:01,105 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 13:36:01,107 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:36:01,107 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:36:01,109 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:01,109 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:01,110 INFO L82 PathProgramCache]: Analyzing trace with hash 2191759, now seen corresponding path program 1 times [2018-11-18 13:36:01,110 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:01,110 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:01,110 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,111 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:01,111 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:01,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:01,161 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:01,162 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:01,162 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:01,162 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:01,162 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:01,162 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:01,163 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:01,163 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:01,163 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 13:36:01,163 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:01,163 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:01,176 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 13:36:01,195 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 13:36:01,290 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:01,290 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,294 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:01,294 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:01,321 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:36:01,321 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,336 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:01,336 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,353 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:01,353 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:01,370 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:01,371 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:01,372 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:01,372 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:01,372 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:01,372 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:01,372 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:01,372 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:01,372 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:01,372 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-18 13:36:01,372 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:01,372 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:01,373 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 13:36:01,378 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 13:36:01,443 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:01,446 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:01,447 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 13:36:01,448 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:01,448 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:01,448 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:01,448 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:01,449 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:01,450 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:01,450 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:01,458 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:36:01,458 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 13:36:01,458 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:01,459 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:01,459 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:01,459 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:01,459 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:01,459 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:01,459 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:01,463 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:01,466 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:01,466 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:01,467 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:01,468 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:01,468 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:01,468 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 13:36:01,469 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:01,499 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:01,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:01,507 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:01,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:01,514 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:01,515 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 13:36:01,524 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 13:36:01,525 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 80 states. Second operand 3 states. [2018-11-18 13:36:01,577 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 80 states.. Second operand 3 states. Result 228 states and 367 transitions. Complement of second has 6 states. [2018-11-18 13:36:01,578 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 13:36:01,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:36:01,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 244 transitions. [2018-11-18 13:36:01,582 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 4 letters. [2018-11-18 13:36:01,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:01,583 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 8 letters. Loop has 4 letters. [2018-11-18 13:36:01,583 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:01,584 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 244 transitions. Stem has 4 letters. Loop has 8 letters. [2018-11-18 13:36:01,584 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:01,584 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 228 states and 367 transitions. [2018-11-18 13:36:01,590 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 52 [2018-11-18 13:36:01,595 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 228 states to 94 states and 135 transitions. [2018-11-18 13:36:01,596 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 89 [2018-11-18 13:36:01,596 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 90 [2018-11-18 13:36:01,597 INFO L73 IsDeterministic]: Start isDeterministic. Operand 94 states and 135 transitions. [2018-11-18 13:36:01,597 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:01,597 INFO L705 BuchiCegarLoop]: Abstraction has 94 states and 135 transitions. [2018-11-18 13:36:01,608 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states and 135 transitions. [2018-11-18 13:36:01,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 81. [2018-11-18 13:36:01,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2018-11-18 13:36:01,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 121 transitions. [2018-11-18 13:36:01,620 INFO L728 BuchiCegarLoop]: Abstraction has 81 states and 121 transitions. [2018-11-18 13:36:01,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:36:01,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:36:01,622 INFO L87 Difference]: Start difference. First operand 81 states and 121 transitions. Second operand 3 states. [2018-11-18 13:36:01,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:01,676 INFO L93 Difference]: Finished difference Result 41 states and 54 transitions. [2018-11-18 13:36:01,676 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:36:01,677 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 54 transitions. [2018-11-18 13:36:01,678 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 13:36:01,678 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 13:36:01,678 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-18 13:36:01,679 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 41 [2018-11-18 13:36:01,679 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 54 transitions. [2018-11-18 13:36:01,679 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:36:01,679 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 13:36:01,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 54 transitions. [2018-11-18 13:36:01,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2018-11-18 13:36:01,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:36:01,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 54 transitions. [2018-11-18 13:36:01,681 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 13:36:01,681 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 54 transitions. [2018-11-18 13:36:01,681 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-18 13:36:01,681 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 54 transitions. [2018-11-18 13:36:01,682 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 24 [2018-11-18 13:36:01,682 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:01,682 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:01,682 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:36:01,682 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:01,682 INFO L794 eck$LassoCheckResult]: Stem: 516#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 487#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_~sa~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_~sa~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; 488#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 480#L69 base2flt_#res := base2flt_~__retres4~0; 481#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; 510#L19-1 assume !(0 == base2flt_~m % 4294967296); 497#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 484#L47-7 [2018-11-18 13:36:01,682 INFO L796 eck$LassoCheckResult]: Loop: 484#L47-7 assume true; 489#L47-5 assume !false; 490#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 482#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 484#L47-7 [2018-11-18 13:36:01,682 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:01,683 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689378, now seen corresponding path program 1 times [2018-11-18 13:36:01,683 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:01,683 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:01,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,683 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:01,683 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:01,712 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:36:01,712 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:36:01,712 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-18 13:36:01,713 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:01,713 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:01,713 INFO L82 PathProgramCache]: Analyzing trace with hash 4192719, now seen corresponding path program 1 times [2018-11-18 13:36:01,713 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:01,713 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:01,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,714 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:01,714 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:01,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:01,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:01,738 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:01,738 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:01,738 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:01,738 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:01,738 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:01,738 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:01,738 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:01,738 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:01,739 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 13:36:01,739 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:01,739 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:01,739 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 13:36:01,745 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 13:36:01,812 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:01,813 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,826 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:01,826 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:01,848 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:36:01,848 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,863 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:01,863 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:01,879 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:01,880 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:01,896 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:01,897 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:01,897 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:01,897 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:01,897 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:01,898 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:01,898 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:01,898 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:01,898 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:01,898 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-18 13:36:01,898 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:01,898 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:01,899 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 13:36:01,915 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 13:36:02,021 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,021 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:02,021 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 13:36:02,022 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,022 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,022 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,023 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,023 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,023 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,023 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,028 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:36:02,028 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 13:36:02,030 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,031 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,031 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,031 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,031 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,031 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,032 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,034 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:02,036 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:02,036 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:02,036 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:02,036 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:02,037 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:02,037 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 13:36:02,037 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:02,053 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,060 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,064 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,064 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 13:36:02,064 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-18 13:36:02,065 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 54 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-18 13:36:02,075 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 13:36:02,075 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 13:36:02,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:36:02,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 56 transitions. [2018-11-18 13:36:02,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 13:36:02,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 13:36:02,076 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,076 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 56 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 13:36:02,077 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,077 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 74 states and 96 transitions. [2018-11-18 13:36:02,078 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 36 [2018-11-18 13:36:02,079 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 74 states to 71 states and 92 transitions. [2018-11-18 13:36:02,079 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 66 [2018-11-18 13:36:02,079 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 67 [2018-11-18 13:36:02,079 INFO L73 IsDeterministic]: Start isDeterministic. Operand 71 states and 92 transitions. [2018-11-18 13:36:02,080 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:02,080 INFO L705 BuchiCegarLoop]: Abstraction has 71 states and 92 transitions. [2018-11-18 13:36:02,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states and 92 transitions. [2018-11-18 13:36:02,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 45. [2018-11-18 13:36:02,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:36:02,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 59 transitions. [2018-11-18 13:36:02,084 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 59 transitions. [2018-11-18 13:36:02,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-18 13:36:02,084 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-18 13:36:02,084 INFO L87 Difference]: Start difference. First operand 45 states and 59 transitions. Second operand 3 states. [2018-11-18 13:36:02,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:02,115 INFO L93 Difference]: Finished difference Result 42 states and 52 transitions. [2018-11-18 13:36:02,115 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-18 13:36:02,115 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 42 states and 52 transitions. [2018-11-18 13:36:02,116 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 13:36:02,116 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 42 states to 42 states and 52 transitions. [2018-11-18 13:36:02,116 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 13:36:02,116 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 13:36:02,117 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 13:36:02,117 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:36:02,117 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 13:36:02,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 13:36:02,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 37. [2018-11-18 13:36:02,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-18 13:36:02,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 46 transitions. [2018-11-18 13:36:02,119 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 13:36:02,119 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-11-18 13:36:02,119 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-18 13:36:02,119 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 46 transitions. [2018-11-18 13:36:02,120 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 13:36:02,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:02,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:02,120 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:36:02,121 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:02,121 INFO L794 eck$LassoCheckResult]: Stem: 766#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 738#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 739#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 734#L69 base2flt_#res := base2flt_~__retres4~0; 735#L70 main_#t~ret4 := base2flt_#res;assume { :end_inline_base2flt } true;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;assume { :begin_inline_base2flt } true;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 759#L19-1 assume !(0 == base2flt_~m % 4294967296); 746#L25-1 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-18 13:36:02,121 INFO L796 eck$LassoCheckResult]: Loop: 747#L37-3 assume true; 742#L27-4 assume !false; 743#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 756#L37-2 assume base2flt_~m % 4294967296 < 16777216; 747#L37-3 [2018-11-18 13:36:02,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,121 INFO L82 PathProgramCache]: Analyzing trace with hash 1806689351, now seen corresponding path program 1 times [2018-11-18 13:36:02,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,133 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,133 INFO L82 PathProgramCache]: Analyzing trace with hash 3361610, now seen corresponding path program 1 times [2018-11-18 13:36:02,133 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,133 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,134 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,134 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,139 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,139 INFO L82 PathProgramCache]: Analyzing trace with hash -1926521712, now seen corresponding path program 1 times [2018-11-18 13:36:02,139 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,139 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,140 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,140 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,176 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,176 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,176 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,176 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,176 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:02,176 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,176 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,176 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,176 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 13:36:02,176 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,176 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,177 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 13:36:02,182 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 13:36:02,225 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,225 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,234 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:02,234 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:02,246 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:36:02,246 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,261 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:02,261 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,278 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:02,278 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:02,294 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:02,296 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,296 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,296 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,296 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,296 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:02,296 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,296 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,296 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,296 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-18 13:36:02,296 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,297 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,297 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 13:36:02,305 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 13:36:02,341 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,341 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:02,342 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 13:36:02,342 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,342 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,343 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,343 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,343 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,343 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,344 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,345 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:36:02,346 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 13:36:02,346 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,346 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,346 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,347 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,350 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,350 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,350 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,352 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:02,354 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:02,354 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:02,354 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:02,354 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:02,354 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:02,354 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 13:36:02,355 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:02,371 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,376 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,379 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,395 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 13:36:02,395 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 13:36:02,395 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 46 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 13:36:02,401 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 13:36:02,401 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 13:36:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:36:02,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 16 transitions. [2018-11-18 13:36:02,401 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 4 letters. [2018-11-18 13:36:02,401 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 11 letters. Loop has 4 letters. [2018-11-18 13:36:02,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,402 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 16 transitions. Stem has 7 letters. Loop has 8 letters. [2018-11-18 13:36:02,402 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,402 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-18 13:36:02,403 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 13:36:02,404 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 42 states and 52 transitions. [2018-11-18 13:36:02,404 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 13:36:02,404 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 38 [2018-11-18 13:36:02,404 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 52 transitions. [2018-11-18 13:36:02,404 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:02,404 INFO L705 BuchiCegarLoop]: Abstraction has 42 states and 52 transitions. [2018-11-18 13:36:02,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states and 52 transitions. [2018-11-18 13:36:02,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 41. [2018-11-18 13:36:02,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2018-11-18 13:36:02,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2018-11-18 13:36:02,406 INFO L728 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 13:36:02,406 INFO L608 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-11-18 13:36:02,406 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-18 13:36:02,406 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 41 states and 51 transitions. [2018-11-18 13:36:02,407 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 13:36:02,407 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:02,407 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:02,407 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-18 13:36:02,407 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:02,408 INFO L794 eck$LassoCheckResult]: Stem: 904#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 874#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_~sa~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_~sa~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; 875#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 870#L69 base2flt_#res := base2flt_~__retres4~0; 871#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; 897#L19-1 assume !(0 == base2flt_~m % 4294967296); 884#L25-1 assume base2flt_~m % 4294967296 < 16777216; 885#L37-3 assume true; 878#L27-4 assume !false; 879#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 888#L69-1 base2flt_#res := base2flt_~__retres4~0; 889#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; 892#L19-2 assume !(0 == base2flt_~m % 4294967296); 882#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 869#L47-11 [2018-11-18 13:36:02,408 INFO L796 eck$LassoCheckResult]: Loop: 869#L47-11 assume true; 895#L47-9 assume !false; 896#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 867#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 869#L47-11 [2018-11-18 13:36:02,408 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,408 INFO L82 PathProgramCache]: Analyzing trace with hash 639010956, now seen corresponding path program 1 times [2018-11-18 13:36:02,408 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,408 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,409 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,409 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,437 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 13:36:02,437 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:36:02,437 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:36:02,437 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:02,437 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,437 INFO L82 PathProgramCache]: Analyzing trace with hash 6193679, now seen corresponding path program 1 times [2018-11-18 13:36:02,438 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,438 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,438 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,438 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,462 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,462 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,462 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,462 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,462 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:02,462 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,462 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,462 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,462 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 13:36:02,462 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,462 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,463 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 13:36:02,473 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 13:36:02,535 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,535 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,538 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:02,538 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,556 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:02,556 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:02,572 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:02,573 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,573 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,573 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,573 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,573 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:02,574 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,574 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,574 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,574 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-18 13:36:02,574 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,574 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,575 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 13:36:02,578 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 13:36:02,625 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,625 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:02,626 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 13:36:02,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,626 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,627 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,627 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,627 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,628 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,629 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:02,631 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:02,631 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:02,632 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:02,632 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:02,632 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:02,632 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 13:36:02,632 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:02,642 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,650 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,654 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,654 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 13:36:02,654 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 13:36:02,654 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 41 states and 51 transitions. cyclomatic complexity: 15 Second operand 3 states. [2018-11-18 13:36:02,674 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 13:36:02,674 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 13:36:02,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:36:02,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2018-11-18 13:36:02,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 4 letters. [2018-11-18 13:36:02,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,675 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 18 letters. Loop has 4 letters. [2018-11-18 13:36:02,675 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,676 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 48 transitions. Stem has 14 letters. Loop has 8 letters. [2018-11-18 13:36:02,676 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:02,676 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 61 states and 74 transitions. [2018-11-18 13:36:02,677 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 20 [2018-11-18 13:36:02,677 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 61 states to 58 states and 70 transitions. [2018-11-18 13:36:02,677 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 49 [2018-11-18 13:36:02,677 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 50 [2018-11-18 13:36:02,677 INFO L73 IsDeterministic]: Start isDeterministic. Operand 58 states and 70 transitions. [2018-11-18 13:36:02,678 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:02,678 INFO L705 BuchiCegarLoop]: Abstraction has 58 states and 70 transitions. [2018-11-18 13:36:02,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states and 70 transitions. [2018-11-18 13:36:02,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 45. [2018-11-18 13:36:02,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:36:02,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2018-11-18 13:36:02,679 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-18 13:36:02,679 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:36:02,680 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:36:02,680 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 4 states. [2018-11-18 13:36:02,721 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:02,721 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2018-11-18 13:36:02,721 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:36:02,722 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 61 transitions. [2018-11-18 13:36:02,722 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 13:36:02,722 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 49 states and 59 transitions. [2018-11-18 13:36:02,723 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 39 [2018-11-18 13:36:02,723 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 39 [2018-11-18 13:36:02,723 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 59 transitions. [2018-11-18 13:36:02,723 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:02,723 INFO L705 BuchiCegarLoop]: Abstraction has 49 states and 59 transitions. [2018-11-18 13:36:02,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 59 transitions. [2018-11-18 13:36:02,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 45. [2018-11-18 13:36:02,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-11-18 13:36:02,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2018-11-18 13:36:02,725 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 13:36:02,725 INFO L608 BuchiCegarLoop]: Abstraction has 45 states and 55 transitions. [2018-11-18 13:36:02,725 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-18 13:36:02,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 45 states and 55 transitions. [2018-11-18 13:36:02,725 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 12 [2018-11-18 13:36:02,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:02,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:02,726 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 13:36:02,726 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:02,726 INFO L794 eck$LassoCheckResult]: Stem: 1182#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1150#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_~sa~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_~sa~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; 1151#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1146#L69 base2flt_#res := base2flt_~__retres4~0; 1147#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; 1172#L19-1 assume !(0 == base2flt_~m % 4294967296); 1161#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1162#L37-3 assume true; 1156#L27-4 assume !false; 1157#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1171#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1179#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; 1165#L69-1 base2flt_#res := base2flt_~__retres4~0; 1166#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; 1169#L19-2 assume !(0 == base2flt_~m % 4294967296); 1158#L25-2 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-18 13:36:02,726 INFO L796 eck$LassoCheckResult]: Loop: 1160#L37-5 assume true; 1180#L27-7 assume !false; 1167#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1168#L37-4 assume base2flt_~m % 4294967296 < 16777216; 1160#L37-5 [2018-11-18 13:36:02,727 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,727 INFO L82 PathProgramCache]: Analyzing trace with hash 706889747, now seen corresponding path program 1 times [2018-11-18 13:36:02,727 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,727 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,727 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,728 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,728 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-18 13:36:02,767 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-18 13:36:02,768 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-18 13:36:02,768 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:02,768 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,768 INFO L82 PathProgramCache]: Analyzing trace with hash 5362570, now seen corresponding path program 1 times [2018-11-18 13:36:02,768 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:02,768 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:02,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,769 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:02,769 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:02,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:02,789 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,789 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,789 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,790 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,790 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:02,790 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,790 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,790 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,790 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 13:36:02,790 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,791 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,791 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 13:36:02,804 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 13:36:02,849 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,849 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,851 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:02,851 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:02,858 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:36:02,858 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,874 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:02,874 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:02,891 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:02,891 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:02,910 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:02,911 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:02,911 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:02,911 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:02,911 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:02,911 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:02,911 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:02,911 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:02,912 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:02,912 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-18 13:36:02,912 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:02,912 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:02,913 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 13:36:02,917 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 13:36:02,948 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:02,949 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:02,949 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 13:36:02,949 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,949 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,950 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,950 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,950 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,951 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,951 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,953 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:36:02,953 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 13:36:02,953 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:02,953 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:02,953 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:02,954 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:02,954 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:02,954 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:02,954 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:02,956 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:02,957 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:02,957 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:02,957 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:02,957 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:02,958 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:02,958 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 13:36:02,958 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:02,969 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:02,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,976 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:02,980 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:02,995 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 13:36:02,995 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 13:36:02,996 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 45 states and 55 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-18 13:36:03,005 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 13:36:03,005 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 13:36:03,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:36:03,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-18 13:36:03,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 4 letters. [2018-11-18 13:36:03,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,006 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 20 letters. Loop has 4 letters. [2018-11-18 13:36:03,006 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,007 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 16 letters. Loop has 8 letters. [2018-11-18 13:36:03,007 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,007 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 66 states and 79 transitions. [2018-11-18 13:36:03,007 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 16 [2018-11-18 13:36:03,008 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 66 states to 63 states and 75 transitions. [2018-11-18 13:36:03,008 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 48 [2018-11-18 13:36:03,008 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 51 [2018-11-18 13:36:03,008 INFO L73 IsDeterministic]: Start isDeterministic. Operand 63 states and 75 transitions. [2018-11-18 13:36:03,008 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:03,008 INFO L705 BuchiCegarLoop]: Abstraction has 63 states and 75 transitions. [2018-11-18 13:36:03,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states and 75 transitions. [2018-11-18 13:36:03,010 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 49. [2018-11-18 13:36:03,010 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2018-11-18 13:36:03,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 60 transitions. [2018-11-18 13:36:03,010 INFO L728 BuchiCegarLoop]: Abstraction has 49 states and 60 transitions. [2018-11-18 13:36:03,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-18 13:36:03,011 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-18 13:36:03,011 INFO L87 Difference]: Start difference. First operand 49 states and 60 transitions. Second operand 4 states. [2018-11-18 13:36:03,053 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:03,053 INFO L93 Difference]: Finished difference Result 60 states and 72 transitions. [2018-11-18 13:36:03,053 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-18 13:36:03,054 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 60 states and 72 transitions. [2018-11-18 13:36:03,054 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 13:36:03,054 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 60 states to 60 states and 72 transitions. [2018-11-18 13:36:03,055 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2018-11-18 13:36:03,055 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-18 13:36:03,055 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 72 transitions. [2018-11-18 13:36:03,055 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:03,055 INFO L705 BuchiCegarLoop]: Abstraction has 60 states and 72 transitions. [2018-11-18 13:36:03,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 72 transitions. [2018-11-18 13:36:03,056 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 52. [2018-11-18 13:36:03,056 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2018-11-18 13:36:03,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2018-11-18 13:36:03,057 INFO L728 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 13:36:03,057 INFO L608 BuchiCegarLoop]: Abstraction has 52 states and 64 transitions. [2018-11-18 13:36:03,057 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-18 13:36:03,057 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 52 states and 64 transitions. [2018-11-18 13:36:03,057 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 8 [2018-11-18 13:36:03,057 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:03,058 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:03,058 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 13:36:03,058 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:03,058 INFO L794 eck$LassoCheckResult]: Stem: 1488#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1451#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_~sa~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_~sa~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; 1452#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1447#L69 base2flt_#res := base2flt_~__retres4~0; 1448#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; 1478#L19-1 assume !(0 == base2flt_~m % 4294967296); 1462#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1463#L37-3 assume true; 1457#L27-4 assume !false; 1458#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1473#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1492#L37-3 assume true; 1455#L27-4 assume !false; 1456#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1466#L69-1 base2flt_#res := base2flt_~__retres4~0; 1467#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; 1471#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1444#L69-2 base2flt_#res := base2flt_~__retres4~0; 1464#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; 1472#L19-3 assume !(0 == base2flt_~m % 4294967296); 1453#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1454#L47-15 [2018-11-18 13:36:03,058 INFO L796 eck$LassoCheckResult]: Loop: 1454#L47-15 assume true; 1487#L47-13 assume !false; 1489#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1465#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1454#L47-15 [2018-11-18 13:36:03,058 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,059 INFO L82 PathProgramCache]: Analyzing trace with hash -241412798, now seen corresponding path program 1 times [2018-11-18 13:36:03,059 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:03,059 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:03,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,059 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,059 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,089 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 13:36:03,090 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:36:03,090 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,108 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,119 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,123 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 13:36:03,148 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:36:03,148 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-18 13:36:03,148 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:03,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,148 INFO L82 PathProgramCache]: Analyzing trace with hash 8194639, now seen corresponding path program 1 times [2018-11-18 13:36:03,149 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:03,149 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:03,149 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,150 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,150 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:03,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:03,168 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:03,168 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:03,168 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:03,168 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:03,169 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:03,169 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:03,169 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:03,169 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:03,169 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 13:36:03,169 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:03,169 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:03,170 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 13:36:03,175 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 13:36:03,229 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:03,229 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,231 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:03,231 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,248 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:03,248 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:03,264 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:03,265 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:03,266 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:03,266 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:03,266 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:03,266 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:03,266 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:03,266 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:03,266 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:03,266 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-18 13:36:03,266 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:03,266 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:03,266 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 13:36:03,269 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 13:36:03,308 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:03,308 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:03,308 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 13:36:03,309 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:03,309 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:03,309 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:03,309 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:03,309 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:03,309 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:03,310 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:03,311 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:03,312 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:03,312 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:03,313 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:03,313 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:03,313 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:03,313 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 13:36:03,313 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:03,322 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,334 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,338 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,339 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 13:36:03,339 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 13:36:03,339 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 52 states and 64 transitions. cyclomatic complexity: 17 Second operand 3 states. [2018-11-18 13:36:03,344 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 13:36:03,345 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 13:36:03,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-18 13:36:03,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 46 transitions. [2018-11-18 13:36:03,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 4 letters. [2018-11-18 13:36:03,345 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,345 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 25 letters. Loop has 4 letters. [2018-11-18 13:36:03,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,346 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 46 transitions. Stem has 21 letters. Loop has 8 letters. [2018-11-18 13:36:03,346 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,346 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2018-11-18 13:36:03,346 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:36:03,347 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 48 states and 59 transitions. [2018-11-18 13:36:03,347 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-18 13:36:03,347 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-18 13:36:03,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 59 transitions. [2018-11-18 13:36:03,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:03,347 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 13:36:03,347 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 59 transitions. [2018-11-18 13:36:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2018-11-18 13:36:03,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 13:36:03,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 59 transitions. [2018-11-18 13:36:03,350 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 59 transitions. [2018-11-18 13:36:03,350 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-18 13:36:03,350 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-18 13:36:03,350 INFO L87 Difference]: Start difference. First operand 48 states and 59 transitions. Second operand 5 states. [2018-11-18 13:36:03,405 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:03,405 INFO L93 Difference]: Finished difference Result 56 states and 66 transitions. [2018-11-18 13:36:03,406 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2018-11-18 13:36:03,406 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 66 transitions. [2018-11-18 13:36:03,406 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:36:03,407 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 63 transitions. [2018-11-18 13:36:03,407 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-18 13:36:03,407 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-18 13:36:03,407 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 63 transitions. [2018-11-18 13:36:03,407 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-18 13:36:03,407 INFO L705 BuchiCegarLoop]: Abstraction has 53 states and 63 transitions. [2018-11-18 13:36:03,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 63 transitions. [2018-11-18 13:36:03,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 48. [2018-11-18 13:36:03,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2018-11-18 13:36:03,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2018-11-18 13:36:03,411 INFO L728 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 13:36:03,411 INFO L608 BuchiCegarLoop]: Abstraction has 48 states and 58 transitions. [2018-11-18 13:36:03,411 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-18 13:36:03,411 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 48 states and 58 transitions. [2018-11-18 13:36:03,412 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 4 [2018-11-18 13:36:03,412 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-18 13:36:03,412 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-18 13:36:03,412 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 13:36:03,412 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1, 1] [2018-11-18 13:36:03,412 INFO L794 eck$LassoCheckResult]: Stem: 1855#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true; 1820#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_~sa~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_~sa~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; 1821#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1816#L69 base2flt_#res := base2flt_~__retres4~0; 1817#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; 1842#L19-1 assume !(0 == base2flt_~m % 4294967296); 1830#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1831#L37-3 assume true; 1859#L27-4 assume !false; 1840#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1841#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1857#L37-3 assume true; 1825#L27-4 assume !false; 1826#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1858#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1849#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; 1833#L69-1 base2flt_#res := base2flt_~__retres4~0; 1834#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; 1838#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1813#L69-2 base2flt_#res := base2flt_~__retres4~0; 1832#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; 1839#L19-3 assume !(0 == base2flt_~m % 4294967296); 1822#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-18 13:36:03,413 INFO L796 eck$LassoCheckResult]: Loop: 1818#L37-7 assume true; 1819#L27-10 assume !false; 1847#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1852#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1818#L37-7 [2018-11-18 13:36:03,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,413 INFO L82 PathProgramCache]: Analyzing trace with hash 476429317, now seen corresponding path program 1 times [2018-11-18 13:36:03,413 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:03,413 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:03,413 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,465 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 13:36:03,465 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-18 13:36:03,465 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,483 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,499 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 13:36:03,514 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-18 13:36:03,514 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 6 [2018-11-18 13:36:03,514 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-18 13:36:03,514 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,514 INFO L82 PathProgramCache]: Analyzing trace with hash 7363530, now seen corresponding path program 1 times [2018-11-18 13:36:03,515 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-18 13:36:03,515 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-18 13:36:03,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,515 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-18 13:36:03,515 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-18 13:36:03,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:03,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-18 13:36:03,532 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:03,532 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:03,532 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:03,532 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:03,532 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-18 13:36:03,532 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:03,532 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:03,532 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:03,533 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 13:36:03,533 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:03,533 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:03,533 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 13:36:03,538 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 13:36:03,564 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:03,564 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,566 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:03,566 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:03,578 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-18 13:36:03,578 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_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,593 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-18 13:36:03,593 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_f643110b-a1b7-409e-bb1c-5b4ba33c208e/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 13:36:03,612 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-18 13:36:03,612 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-18 13:36:03,628 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-18 13:36:03,629 INFO L216 LassoAnalysis]: Preferences: [2018-11-18 13:36:03,629 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-18 13:36:03,630 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-18 13:36:03,630 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-18 13:36:03,630 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-18 13:36:03,630 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-18 13:36:03,630 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-18 13:36:03,630 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-18 13:36:03,630 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-18 13:36:03,630 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-18 13:36:03,630 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-18 13:36:03,631 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 13:36:03,636 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 13:36:03,663 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-18 13:36:03,663 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-18 13:36:03,663 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 13:36:03,663 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:03,663 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:03,664 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:03,664 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:03,664 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:03,664 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:03,664 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:03,665 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-18 13:36:03,665 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 13:36:03,665 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-18 13:36:03,665 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-18 13:36:03,665 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-18 13:36:03,665 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-18 13:36:03,665 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-18 13:36:03,666 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-18 13:36:03,666 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-18 13:36:03,666 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-18 13:36:03,667 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-18 13:36:03,667 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-18 13:36:03,668 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-18 13:36:03,668 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-18 13:36:03,668 INFO L518 LassoAnalysis]: Proved termination. [2018-11-18 13:36:03,668 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 13:36:03,668 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-18 13:36:03,688 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-18 13:36:03,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,697 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-18 13:36:03,701 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-18 13:36:03,708 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 13:36:03,708 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 13:36:03,708 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 48 states and 58 transitions. cyclomatic complexity: 14 Second operand 4 states. [2018-11-18 13:36:03,710 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 13:36:03,711 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 13:36:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-18 13:36:03,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2018-11-18 13:36:03,711 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 4 letters. [2018-11-18 13:36:03,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 27 letters. Loop has 4 letters. [2018-11-18 13:36:03,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,712 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 42 transitions. Stem has 23 letters. Loop has 8 letters. [2018-11-18 13:36:03,712 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-18 13:36:03,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 53 states and 64 transitions. [2018-11-18 13:36:03,713 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 13:36:03,713 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 53 states to 0 states and 0 transitions. [2018-11-18 13:36:03,713 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 13:36:03,713 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 13:36:03,713 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 13:36:03,713 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:36:03,713 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:36:03,713 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:36:03,713 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2018-11-18 13:36:03,713 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2018-11-18 13:36:03,714 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 6 states. [2018-11-18 13:36:03,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-18 13:36:03,714 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-18 13:36:03,714 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-18 13:36:03,714 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-18 13:36:03,714 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 13:36:03,714 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-18 13:36:03,714 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-18 13:36:03,714 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-18 13:36:03,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-18 13:36:03,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-18 13:36:03,714 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:36:03,714 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:36:03,715 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-18 13:36:03,715 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-18 13:36:03,715 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-18 13:36:03,715 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-18 13:36:03,715 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-18 13:36:03,720 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 18.11 01:36:03 BoogieIcfgContainer [2018-11-18 13:36:03,720 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-18 13:36:03,721 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-18 13:36:03,721 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-18 13:36:03,721 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-18 13:36:03,721 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.11 01:36:00" (3/4) ... [2018-11-18 13:36:03,724 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-18 13:36:03,724 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-18 13:36:03,725 INFO L168 Benchmark]: Toolchain (without parser) took 3517.34 ms. Allocated memory was 1.0 GB in the beginning and 1.3 GB in the end (delta: 223.3 MB). Free memory was 959.1 MB in the beginning and 1.0 GB in the end (delta: -45.5 MB). Peak memory consumption was 177.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,726 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:36:03,726 INFO L168 Benchmark]: CACSL2BoogieTranslator took 183.81 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,727 INFO L168 Benchmark]: Boogie Procedure Inliner took 63.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,727 INFO L168 Benchmark]: Boogie Preprocessor took 25.13 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,727 INFO L168 Benchmark]: RCFGBuilder took 388.24 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,728 INFO L168 Benchmark]: BuchiAutomizer took 2850.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 96.6 MB). Peak memory consumption was 174.2 MB. Max. memory is 11.5 GB. [2018-11-18 13:36:03,728 INFO L168 Benchmark]: Witness Printer took 3.56 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-18 13:36:03,731 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 985.4 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 183.81 ms. Allocated memory is still 1.0 GB. Free memory was 959.1 MB in the beginning and 945.6 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 63.82 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 145.8 MB). Free memory was 945.6 MB in the beginning and 1.1 GB in the end (delta: -197.9 MB). Peak memory consumption was 17.3 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 25.13 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: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 11.5 GB. * RCFGBuilder took 388.24 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: 38.8 MB). Peak memory consumption was 38.8 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2850.10 ms. Allocated memory was 1.2 GB in the beginning and 1.3 GB in the end (delta: 77.6 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 96.6 MB). Peak memory consumption was 174.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.56 ms. Allocated memory is still 1.3 GB. Free memory is still 1.0 GB. 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 2.8s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 2.0s. 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: 588 SDtfs, 387 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: 10ms 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...