./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 641efd2558246d4ccf383f6f2b7128ac0bea67b9 .......................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-08 17:13:45,006 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-08 17:13:45,007 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-08 17:13:45,013 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-08 17:13:45,013 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-08 17:13:45,014 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-08 17:13:45,015 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-08 17:13:45,015 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-08 17:13:45,016 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-08 17:13:45,017 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-08 17:13:45,017 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-08 17:13:45,017 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-08 17:13:45,018 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-08 17:13:45,018 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-08 17:13:45,019 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-08 17:13:45,019 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-08 17:13:45,020 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-08 17:13:45,020 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-08 17:13:45,021 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-08 17:13:45,022 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-08 17:13:45,023 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-08 17:13:45,023 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-08 17:13:45,024 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-08 17:13:45,024 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-08 17:13:45,025 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-08 17:13:45,025 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-08 17:13:45,026 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-08 17:13:45,026 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-08 17:13:45,026 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-08 17:13:45,027 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-08 17:13:45,027 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-08 17:13:45,028 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-08 17:13:45,028 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-08 17:13:45,028 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-08 17:13:45,028 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-08 17:13:45,029 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-08 17:13:45,029 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-08 17:13:45,037 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-08 17:13:45,037 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-08 17:13:45,038 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Use SBE=true [2018-12-08 17:13:45,038 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-08 17:13:45,038 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-08 17:13:45,039 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-08 17:13:45,039 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-08 17:13:45,040 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-08 17:13:45,040 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-08 17:13:45,040 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-08 17:13:45,041 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-08 17:13:45,041 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 641efd2558246d4ccf383f6f2b7128ac0bea67b9 [2018-12-08 17:13:45,058 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-08 17:13:45,067 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-08 17:13:45,070 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-08 17:13:45,071 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-08 17:13:45,071 INFO L276 PluginConnector]: CDTParser initialized [2018-12-08 17:13:45,072 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 17:13:45,116 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/data/3828264da/457bb79ec1594d61a5321e2c7ae5828e/FLAGf69c1422e [2018-12-08 17:13:45,532 INFO L307 CDTParser]: Found 1 translation units. [2018-12-08 17:13:45,532 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/sv-benchmarks/c/bitvector/soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 17:13:45,536 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/data/3828264da/457bb79ec1594d61a5321e2c7ae5828e/FLAGf69c1422e [2018-12-08 17:13:45,544 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/data/3828264da/457bb79ec1594d61a5321e2c7ae5828e [2018-12-08 17:13:45,546 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-08 17:13:45,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-08 17:13:45,547 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-08 17:13:45,547 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-08 17:13:45,549 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-08 17:13:45,550 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,551 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45, skipping insertion in model container [2018-12-08 17:13:45,551 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-08 17:13:45,568 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-08 17:13:45,673 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:13:45,675 INFO L191 MainTranslator]: Completed pre-run [2018-12-08 17:13:45,699 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-08 17:13:45,707 INFO L195 MainTranslator]: Completed translation [2018-12-08 17:13:45,707 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45 WrapperNode [2018-12-08 17:13:45,707 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-08 17:13:45,708 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-08 17:13:45,708 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-08 17:13:45,708 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-08 17:13:45,714 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,720 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,767 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-08 17:13:45,767 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-08 17:13:45,767 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-08 17:13:45,767 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-08 17:13:45,773 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,774 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,774 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,782 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,783 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... [2018-12-08 17:13:45,785 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-08 17:13:45,785 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-08 17:13:45,785 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-08 17:13:45,785 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-08 17:13:45,786 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-08 17:13:45,819 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-08 17:13:46,035 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-08 17:13:46,035 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-08 17:13:46,035 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:13:46 BoogieIcfgContainer [2018-12-08 17:13:46,035 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-08 17:13:46,036 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-08 17:13:46,036 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-08 17:13:46,038 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-08 17:13:46,038 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 17:13:46,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 08.12 05:13:45" (1/3) ... [2018-12-08 17:13:46,039 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2adb1689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 05:13:46, skipping insertion in model container [2018-12-08 17:13:46,039 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 17:13:46,039 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.12 05:13:45" (2/3) ... [2018-12-08 17:13:46,040 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2adb1689 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 08.12 05:13:46, skipping insertion in model container [2018-12-08 17:13:46,040 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-08 17:13:46,040 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:13:46" (3/3) ... [2018-12-08 17:13:46,041 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-08 17:13:46,073 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-08 17:13:46,073 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-08 17:13:46,073 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-08 17:13:46,073 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-08 17:13:46,073 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-08 17:13:46,073 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-08 17:13:46,073 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-08 17:13:46,073 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-08 17:13:46,074 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-08 17:13:46,083 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2018-12-08 17:13:46,097 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-08 17:13:46,098 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:46,098 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:46,102 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 17:13:46,102 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:46,102 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-08 17:13:46,102 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 69 states. [2018-12-08 17:13:46,105 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-08 17:13:46,105 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:46,105 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:46,105 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-08 17:13:46,105 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:46,110 INFO L794 eck$LassoCheckResult]: Stem: 41#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 35#L19true assume !(0 == base2flt_~m % 4294967296); 23#L25true assume !(base2flt_~m % 4294967296 < 16777216); 17#L47-2true [2018-12-08 17:13:46,110 INFO L796 eck$LassoCheckResult]: Loop: 17#L47-2true assume !false; 28#L48true assume base2flt_~m % 4294967296 >= 33554432; 53#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 17#L47-2true [2018-12-08 17:13:46,113 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,113 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-12-08 17:13:46,114 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,115 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,143 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,143 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:46,201 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:13:46,201 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-08 17:13:46,204 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:46,204 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,204 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-12-08 17:13:46,204 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,204 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,205 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,205 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,246 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:46,247 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:46,247 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:46,247 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:46,247 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:46,247 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:46,247 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:46,247 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:46,247 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-08 17:13:46,247 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:46,248 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:46,259 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,267 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,324 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:46,324 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,327 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:46,327 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:46,350 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 17:13:46,350 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,365 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:46,365 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,382 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:46,382 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:46,398 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:46,399 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:46,399 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:46,399 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:46,399 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:46,399 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:46,399 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:46,400 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:46,400 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:46,400 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-08 17:13:46,400 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:46,400 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:46,401 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,454 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:46,457 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:46,458 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 [2018-12-08 17:13:46,458 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:46,459 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:46,459 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:46,459 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:46,459 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:46,461 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:46,461 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:46,466 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 17:13:46,466 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 [2018-12-08 17:13:46,467 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:46,467 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:46,467 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:46,467 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:46,467 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:46,468 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:46,468 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:46,470 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:46,472 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:46,472 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:46,474 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:46,474 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:46,474 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:46,474 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 17:13:46,475 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:46,498 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,506 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:46,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,512 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:46,513 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:46,522 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 [2018-12-08 17:13:46,523 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 69 states. Second operand 3 states. [2018-12-08 17:13:46,561 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 69 states.. Second operand 3 states. Result 200 states and 340 transitions. Complement of second has 6 states. [2018-12-08 17:13:46,562 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 [2018-12-08 17:13:46,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 17:13:46,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 225 transitions. [2018-12-08 17:13:46,565 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-08 17:13:46,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 17:13:46,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,566 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 225 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-08 17:13:46,566 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,567 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 200 states and 340 transitions. [2018-12-08 17:13:46,571 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-12-08 17:13:46,575 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 200 states to 78 states and 119 transitions. [2018-12-08 17:13:46,576 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-12-08 17:13:46,576 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-12-08 17:13:46,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-12-08 17:13:46,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:46,577 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-12-08 17:13:46,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-12-08 17:13:46,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-12-08 17:13:46,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-08 17:13:46,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-12-08 17:13:46,596 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-12-08 17:13:46,597 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 17:13:46,598 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:13:46,598 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-12-08 17:13:46,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:46,632 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-12-08 17:13:46,633 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 17:13:46,633 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-12-08 17:13:46,634 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-08 17:13:46,634 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-12-08 17:13:46,634 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-08 17:13:46,634 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-08 17:13:46,634 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-12-08 17:13:46,634 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 17:13:46,634 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-08 17:13:46,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-12-08 17:13:46,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-08 17:13:46,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 17:13:46,636 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-12-08 17:13:46,636 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-08 17:13:46,636 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-08 17:13:46,636 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-08 17:13:46,636 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-12-08 17:13:46,637 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-08 17:13:46,637 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:46,637 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:46,637 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 17:13:46,637 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:46,637 INFO L794 eck$LassoCheckResult]: Stem: 443#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 441#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 414#L69 base2flt_#res := base2flt_~__retres4~0; 415#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 438#L19-1 assume !(0 == base2flt_~m % 4294967296); 426#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 418#L47-5 [2018-12-08 17:13:46,637 INFO L796 eck$LassoCheckResult]: Loop: 418#L47-5 assume !false; 421#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 416#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 418#L47-5 [2018-12-08 17:13:46,637 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,637 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-12-08 17:13:46,637 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,638 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,638 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,638 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,667 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:46,667 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:13:46,667 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-08 17:13:46,667 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:46,667 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,667 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-12-08 17:13:46,668 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,668 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,668 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,668 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,686 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:46,686 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:46,686 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:46,686 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:46,686 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:46,686 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:46,686 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:46,686 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:46,686 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-08 17:13:46,686 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:46,686 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:46,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,740 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:46,740 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,744 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:46,744 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:46,766 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 17:13:46,767 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,782 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:46,782 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:46,799 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:46,800 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:46,817 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:46,818 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:46,818 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:46,818 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:46,818 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:46,818 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:46,818 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:46,818 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:46,819 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:46,819 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-08 17:13:46,819 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:46,819 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:46,819 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,868 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:46,868 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:46,869 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 [2018-12-08 17:13:46,869 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:46,869 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:46,869 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:46,869 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:46,869 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:46,870 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:46,870 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:46,874 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 17:13:46,874 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 [2018-12-08 17:13:46,874 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:46,875 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:46,875 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:46,875 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:46,875 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:46,875 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:46,875 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:46,877 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:46,878 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:46,879 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:46,879 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:46,879 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:46,879 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:46,879 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 17:13:46,879 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:46,889 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,895 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:46,898 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:46,898 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:46,898 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 [2018-12-08 17:13:46,898 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-12-08 17:13:46,907 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2018-12-08 17:13:46,907 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 [2018-12-08 17:13:46,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 17:13:46,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-12-08 17:13:46,907 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 17:13:46,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 17:13:46,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,908 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-08 17:13:46,908 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:46,908 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-12-08 17:13:46,909 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-12-08 17:13:46,910 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-12-08 17:13:46,910 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-12-08 17:13:46,910 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-12-08 17:13:46,910 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-12-08 17:13:46,910 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:46,910 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-12-08 17:13:46,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-12-08 17:13:46,912 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-12-08 17:13:46,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 17:13:46,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-12-08 17:13:46,912 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-12-08 17:13:46,912 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 17:13:46,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:13:46,913 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-12-08 17:13:46,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:46,942 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-12-08 17:13:46,942 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 17:13:46,942 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-12-08 17:13:46,942 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-08 17:13:46,943 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-12-08 17:13:46,943 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-12-08 17:13:46,943 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-12-08 17:13:46,943 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-12-08 17:13:46,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 17:13:46,943 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-12-08 17:13:46,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-12-08 17:13:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-12-08 17:13:46,944 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-08 17:13:46,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-12-08 17:13:46,945 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-08 17:13:46,945 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-08 17:13:46,945 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-08 17:13:46,945 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-12-08 17:13:46,945 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-08 17:13:46,945 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:46,945 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:46,945 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-08 17:13:46,945 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:46,946 INFO L794 eck$LassoCheckResult]: Stem: 654#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 651#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 628#L69 base2flt_#res := base2flt_~__retres4~0; 629#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 648#L19-1 assume !(0 == base2flt_~m % 4294967296); 636#L25-1 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2018-12-08 17:13:46,946 INFO L796 eck$LassoCheckResult]: Loop: 637#L37-3 assume !false; 646#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 647#L37-2 assume base2flt_~m % 4294967296 < 16777216; 637#L37-3 [2018-12-08 17:13:46,946 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,946 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-12-08 17:13:46,946 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,946 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,947 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,947 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,955 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,955 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-12-08 17:13:46,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,956 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,956 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,959 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:46,960 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-12-08 17:13:46,960 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:46,960 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:46,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,960 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:46,960 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:46,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:46,993 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:46,993 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:46,993 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:46,993 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:46,993 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:46,993 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:46,993 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:46,993 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:46,993 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-08 17:13:46,993 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:46,994 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:46,994 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:46,998 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,030 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,030 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,031 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,032 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,039 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 17:13:47,039 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,054 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,054 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,070 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:47,070 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,085 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:47,086 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,086 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,087 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,087 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,087 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:47,087 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,087 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,087 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,087 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-08 17:13:47,087 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,087 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,088 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,093 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,127 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,128 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:47,128 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 [2018-12-08 17:13:47,128 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,128 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,129 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,129 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,129 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,129 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,129 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,130 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 17:13:47,131 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 [2018-12-08 17:13:47,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,131 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,131 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,132 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,133 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:47,134 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:47,134 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:47,134 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:47,135 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:47,135 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:47,135 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-08 17:13:47,135 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:47,148 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,153 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,153 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,156 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,170 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,170 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 [2018-12-08 17:13:47,170 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-08 17:13:47,179 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2018-12-08 17:13:47,179 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 [2018-12-08 17:13:47,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 17:13:47,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-08 17:13:47,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-08 17:13:47,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 17:13:47,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,180 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-08 17:13:47,180 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,180 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-12-08 17:13:47,181 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-08 17:13:47,182 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-12-08 17:13:47,182 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-12-08 17:13:47,182 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-12-08 17:13:47,182 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-12-08 17:13:47,182 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,182 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-12-08 17:13:47,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-12-08 17:13:47,184 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-12-08 17:13:47,184 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-08 17:13:47,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-12-08 17:13:47,184 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-08 17:13:47,184 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-08 17:13:47,184 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-08 17:13:47,184 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-12-08 17:13:47,185 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-08 17:13:47,185 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:47,185 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:47,185 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:13:47,185 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:47,186 INFO L794 eck$LassoCheckResult]: Stem: 793#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 790#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 766#L69 base2flt_#res := base2flt_~__retres4~0; 767#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 787#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 778#L69-1 base2flt_#res := base2flt_~__retres4~0; 779#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 782#L19-2 assume !(0 == base2flt_~m % 4294967296); 772#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 765#L47-8 [2018-12-08 17:13:47,186 INFO L796 eck$LassoCheckResult]: Loop: 765#L47-8 assume !false; 788#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 763#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 765#L47-8 [2018-12-08 17:13:47,186 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,186 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-12-08 17:13:47,186 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,186 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,187 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,187 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,211 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,211 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:13:47,211 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-08 17:13:47,212 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:47,212 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,212 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-12-08 17:13:47,212 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,212 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,212 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,212 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,213 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,232 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,232 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,232 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,232 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,232 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:47,233 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,233 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,233 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,233 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-08 17:13:47,233 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,233 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,234 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,239 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,291 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,291 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,292 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,292 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,308 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:47,308 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,324 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:47,325 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,325 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,325 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,325 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,325 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:47,325 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,325 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,325 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,325 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-08 17:13:47,325 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,325 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,326 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,332 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,370 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,370 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:47,371 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 [2018-12-08 17:13:47,371 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,371 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,371 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,371 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,371 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,372 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,372 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,374 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:47,375 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:47,375 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:47,375 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:47,375 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:47,375 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:47,375 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 17:13:47,375 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:47,387 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,394 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,397 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,398 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,398 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 [2018-12-08 17:13:47,398 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-08 17:13:47,405 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2018-12-08 17:13:47,406 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 [2018-12-08 17:13:47,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 17:13:47,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-08 17:13:47,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-08 17:13:47,406 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,406 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 17:13:47,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,407 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-08 17:13:47,407 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,407 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-12-08 17:13:47,407 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-08 17:13:47,408 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-12-08 17:13:47,408 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-12-08 17:13:47,408 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-12-08 17:13:47,408 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-12-08 17:13:47,408 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,408 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-12-08 17:13:47,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-12-08 17:13:47,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-12-08 17:13:47,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 17:13:47,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-12-08 17:13:47,410 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-12-08 17:13:47,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-08 17:13:47,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-08 17:13:47,410 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-12-08 17:13:47,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:47,432 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-12-08 17:13:47,432 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-08 17:13:47,432 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-12-08 17:13:47,432 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-08 17:13:47,433 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-12-08 17:13:47,433 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-08 17:13:47,433 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-08 17:13:47,433 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-12-08 17:13:47,433 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,433 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-12-08 17:13:47,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-12-08 17:13:47,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-12-08 17:13:47,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 17:13:47,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-12-08 17:13:47,434 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-08 17:13:47,434 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-08 17:13:47,434 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-08 17:13:47,434 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-12-08 17:13:47,434 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-08 17:13:47,435 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:47,435 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:47,435 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:13:47,435 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:47,435 INFO L794 eck$LassoCheckResult]: Stem: 1014#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1011#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 985#L69 base2flt_#res := base2flt_~__retres4~0; 986#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1007#L19-1 assume !(0 == base2flt_~m % 4294967296); 994#L25-1 assume base2flt_~m % 4294967296 < 16777216; 995#L37-3 assume !false; 1004#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 998#L69-1 base2flt_#res := base2flt_~__retres4~0; 999#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1002#L19-2 assume !(0 == base2flt_~m % 4294967296); 991#L25-2 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2018-12-08 17:13:47,435 INFO L796 eck$LassoCheckResult]: Loop: 993#L37-5 assume !false; 1000#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1001#L37-4 assume base2flt_~m % 4294967296 < 16777216; 993#L37-5 [2018-12-08 17:13:47,435 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,435 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-12-08 17:13:47,435 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,435 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,436 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,436 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,451 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,451 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:13:47,451 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 17:13:47,451 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:47,451 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,451 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-12-08 17:13:47,452 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,452 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,452 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,452 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,466 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,466 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,466 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,466 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,466 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:47,466 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,466 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,466 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,466 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-08 17:13:47,466 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,466 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,467 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,471 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,500 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,500 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,502 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,502 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,509 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 17:13:47,509 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,523 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,523 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,538 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:47,539 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,554 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:47,555 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,555 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,555 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,555 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,555 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:47,555 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,555 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,555 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,555 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-08 17:13:47,555 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,555 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,556 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,559 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,599 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,599 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:47,600 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 [2018-12-08 17:13:47,600 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,600 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,600 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,601 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,601 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,601 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,601 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,602 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 17:13:47,603 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 [2018-12-08 17:13:47,603 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,603 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,603 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,603 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,603 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,604 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,604 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,605 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:47,606 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:47,607 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:47,607 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:47,607 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:47,607 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:47,607 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-08 17:13:47,607 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:47,616 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,622 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,625 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,634 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,634 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 [2018-12-08 17:13:47,634 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-12-08 17:13:47,640 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2018-12-08 17:13:47,640 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 [2018-12-08 17:13:47,640 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 17:13:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-08 17:13:47,640 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-08 17:13:47,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-08 17:13:47,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,641 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-08 17:13:47,641 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,641 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-12-08 17:13:47,641 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-08 17:13:47,642 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-12-08 17:13:47,642 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-12-08 17:13:47,642 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-12-08 17:13:47,642 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-12-08 17:13:47,642 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,642 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-12-08 17:13:47,642 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-12-08 17:13:47,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-12-08 17:13:47,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 17:13:47,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-12-08 17:13:47,643 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-12-08 17:13:47,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 17:13:47,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-08 17:13:47,643 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-12-08 17:13:47,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:47,673 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-12-08 17:13:47,673 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 17:13:47,673 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-12-08 17:13:47,674 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-08 17:13:47,674 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-12-08 17:13:47,674 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-12-08 17:13:47,674 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-12-08 17:13:47,674 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-12-08 17:13:47,675 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,675 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-08 17:13:47,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-12-08 17:13:47,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-08 17:13:47,676 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-08 17:13:47,676 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-12-08 17:13:47,676 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-08 17:13:47,676 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-08 17:13:47,676 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-08 17:13:47,676 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-12-08 17:13:47,677 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-08 17:13:47,677 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:47,677 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:47,677 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:13:47,677 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:47,677 INFO L794 eck$LassoCheckResult]: Stem: 1262#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1257#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1230#L69 base2flt_#res := base2flt_~__retres4~0; 1231#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1253#L19-1 assume !(0 == base2flt_~m % 4294967296); 1239#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1240#L37-3 assume !false; 1251#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1252#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1258#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; 1243#L69-1 base2flt_#res := base2flt_~__retres4~0; 1244#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1248#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1227#L69-2 base2flt_#res := base2flt_~__retres4~0; 1241#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1249#L19-3 assume !(0 == base2flt_~m % 4294967296); 1234#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1235#L47-11 [2018-12-08 17:13:47,678 INFO L796 eck$LassoCheckResult]: Loop: 1235#L47-11 assume !false; 1264#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1242#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1235#L47-11 [2018-12-08 17:13:47,678 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,678 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-12-08 17:13:47,678 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,678 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,679 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,679 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,709 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-08 17:13:47,709 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-08 17:13:47,709 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:47,709 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,709 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-12-08 17:13:47,709 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,709 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,710 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,710 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,725 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,725 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,725 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,725 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,725 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:47,725 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,725 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,726 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,726 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-08 17:13:47,726 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,726 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,726 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,730 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,780 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,780 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,781 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:47,781 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:47,800 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:47,800 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:47,816 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:47,817 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:47,817 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:47,817 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:47,817 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:47,818 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:47,818 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:47,818 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:47,818 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:47,818 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-08 17:13:47,818 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:47,818 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:47,818 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:47,856 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:47,856 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:47,856 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 [2018-12-08 17:13:47,857 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:47,857 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:47,857 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:47,857 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:47,857 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:47,857 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:47,857 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:47,858 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:47,859 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:47,859 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:47,860 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:47,860 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:47,860 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:47,860 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-08 17:13:47,860 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:47,868 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,876 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,878 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,878 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 [2018-12-08 17:13:47,878 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-08 17:13:47,882 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2018-12-08 17:13:47,882 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 [2018-12-08 17:13:47,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-08 17:13:47,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-12-08 17:13:47,882 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-12-08 17:13:47,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-12-08 17:13:47,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,883 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-12-08 17:13:47,883 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:47,883 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-12-08 17:13:47,884 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 17:13:47,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-12-08 17:13:47,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-12-08 17:13:47,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-12-08 17:13:47,884 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-12-08 17:13:47,884 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,884 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-08 17:13:47,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-12-08 17:13:47,886 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-08 17:13:47,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-08 17:13:47,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-12-08 17:13:47,886 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-08 17:13:47,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-08 17:13:47,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-08 17:13:47,886 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-12-08 17:13:47,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:47,918 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-12-08 17:13:47,919 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-08 17:13:47,919 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-12-08 17:13:47,919 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 17:13:47,919 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-12-08 17:13:47,919 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-08 17:13:47,919 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-12-08 17:13:47,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-12-08 17:13:47,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-08 17:13:47,920 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-12-08 17:13:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-12-08 17:13:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-12-08 17:13:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-08 17:13:47,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-12-08 17:13:47,922 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-08 17:13:47,922 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-08 17:13:47,922 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-08 17:13:47,922 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-12-08 17:13:47,922 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-08 17:13:47,922 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-08 17:13:47,922 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-08 17:13:47,923 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-08 17:13:47,923 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-08 17:13:47,923 INFO L794 eck$LassoCheckResult]: Stem: 1502#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sb~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sb~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1499#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1474#L69 base2flt_#res := base2flt_~__retres4~0; 1475#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 1495#L19-1 assume !(0 == base2flt_~m % 4294967296); 1482#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1483#L37-3 assume !false; 1493#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1494#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1505#L37-3 assume !false; 1492#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1485#L69-1 base2flt_#res := base2flt_~__retres4~0; 1486#L70-1 main_#t~ret5 := base2flt_#res;main_~one~0 := main_#t~ret5;havoc main_#t~ret5;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; 1490#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1471#L69-2 base2flt_#res := base2flt_~__retres4~0; 1484#L70-2 main_#t~ret6 := base2flt_#res;main_~a~0 := main_#t~ret6;havoc main_#t~ret6;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; 1491#L19-3 assume !(0 == base2flt_~m % 4294967296); 1478#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2018-12-08 17:13:47,923 INFO L796 eck$LassoCheckResult]: Loop: 1476#L37-7 assume !false; 1477#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1501#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1476#L37-7 [2018-12-08 17:13:47,924 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,924 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-12-08 17:13:47,924 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,924 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,924 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,925 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,925 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,953 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,953 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-08 17:13:47,954 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-08 17:13:47,959 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:47,967 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:47,970 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:47,985 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-08 17:13:47,985 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-12-08 17:13:47,986 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-08 17:13:47,986 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:47,986 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-12-08 17:13:47,986 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-08 17:13:47,986 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-08 17:13:47,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,987 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-08 17:13:47,987 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-08 17:13:47,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:47,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-08 17:13:48,001 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:48,001 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:48,001 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:48,001 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:48,001 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-08 17:13:48,001 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:48,001 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:48,001 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:48,001 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-08 17:13:48,001 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:48,002 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:48,002 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:48,007 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:48,037 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:48,037 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:48,038 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:48,038 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:48,044 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-08 17:13:48,044 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_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:48,060 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-08 17:13:48,060 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_2010c5e8-ba65-4000-a7c7-3a51a005bbfc/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 [2018-12-08 17:13:48,078 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-08 17:13:48,078 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-08 17:13:48,093 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-08 17:13:48,095 INFO L216 LassoAnalysis]: Preferences: [2018-12-08 17:13:48,095 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-08 17:13:48,095 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-08 17:13:48,095 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-08 17:13:48,095 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-08 17:13:48,095 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-08 17:13:48,095 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-08 17:13:48,095 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-08 17:13:48,095 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_3_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-08 17:13:48,095 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-08 17:13:48,095 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-08 17:13:48,096 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:48,100 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-08 17:13:48,128 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-08 17:13:48,128 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-08 17:13:48,129 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 [2018-12-08 17:13:48,129 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:48,129 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:48,129 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:48,129 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:48,129 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:48,130 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:48,130 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:48,131 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-08 17:13:48,131 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 [2018-12-08 17:13:48,131 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-08 17:13:48,131 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-08 17:13:48,131 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-08 17:13:48,131 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-08 17:13:48,131 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-08 17:13:48,132 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-08 17:13:48,132 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-08 17:13:48,133 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-08 17:13:48,133 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-08 17:13:48,133 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-08 17:13:48,134 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-08 17:13:48,134 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-08 17:13:48,134 INFO L518 LassoAnalysis]: Proved termination. [2018-12-08 17:13:48,134 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-08 17:13:48,134 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-08 17:13:48,146 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-08 17:13:48,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:48,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-08 17:13:48,158 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-08 17:13:48,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-08 17:13:48,171 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 [2018-12-08 17:13:48,172 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-08 17:13:48,175 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2018-12-08 17:13:48,175 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 [2018-12-08 17:13:48,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-08 17:13:48,176 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-12-08 17:13:48,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-12-08 17:13:48,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:48,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-08 17:13:48,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:48,176 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-12-08 17:13:48,176 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-08 17:13:48,177 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-12-08 17:13:48,177 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 17:13:48,177 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-12-08 17:13:48,177 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 17:13:48,177 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 17:13:48,178 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 17:13:48,178 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 17:13:48,178 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:13:48,178 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:13:48,178 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-08 17:13:48,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-08 17:13:48,178 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-12-08 17:13:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-08 17:13:48,179 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-08 17:13:48,179 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-08 17:13:48,179 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-08 17:13:48,179 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 17:13:48,179 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-08 17:13:48,179 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-08 17:13:48,179 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-08 17:13:48,179 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-08 17:13:48,179 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-08 17:13:48,180 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:13:48,180 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:13:48,180 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-08 17:13:48,180 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-08 17:13:48,180 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-08 17:13:48,180 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-08 17:13:48,180 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-08 17:13:48,184 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 08.12 05:13:48 BoogieIcfgContainer [2018-12-08 17:13:48,184 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-08 17:13:48,185 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-08 17:13:48,185 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-08 17:13:48,185 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-08 17:13:48,185 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.12 05:13:46" (3/4) ... [2018-12-08 17:13:48,187 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-08 17:13:48,187 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-08 17:13:48,188 INFO L168 Benchmark]: Toolchain (without parser) took 2641.45 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 956.0 MB in the beginning and 859.1 MB in the end (delta: 96.8 MB). Peak memory consumption was 189.1 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,189 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:13:48,189 INFO L168 Benchmark]: CACSL2BoogieTranslator took 160.13 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 939.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,189 INFO L168 Benchmark]: Boogie Procedure Inliner took 59.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,190 INFO L168 Benchmark]: Boogie Preprocessor took 17.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,190 INFO L168 Benchmark]: RCFGBuilder took 250.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,190 INFO L168 Benchmark]: BuchiAutomizer took 2148.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.1 MB in the end (delta: 197.8 MB). Peak memory consumption was 197.8 MB. Max. memory is 11.5 GB. [2018-12-08 17:13:48,190 INFO L168 Benchmark]: Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 859.1 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-08 17:13:48,192 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 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 160.13 ms. Allocated memory is still 1.0 GB. Free memory was 956.0 MB in the beginning and 939.9 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 59.47 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 92.3 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -150.2 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.81 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 11.5 GB. * RCFGBuilder took 250.06 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 30.4 MB). Peak memory consumption was 30.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2148.79 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 859.1 MB in the end (delta: 197.8 MB). Peak memory consumption was 197.8 MB. Max. memory is 11.5 GB. * Witness Printer took 2.68 ms. Allocated memory is still 1.1 GB. Free memory is still 859.1 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.1s. 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, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 541 SDtfs, 372 SDslu, 116 SDs, 0 SdLazy, 207 SolverSat, 13 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s 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: 8ms 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...