./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 0cd3be1d Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(F end) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 45b185c6c694406b0734db5727dff1b8fd93ebcf ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-0cd3be1 [2018-11-28 11:43:56,090 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-11-28 11:43:56,091 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-11-28 11:43:56,100 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-11-28 11:43:56,100 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-11-28 11:43:56,101 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-11-28 11:43:56,102 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-11-28 11:43:56,103 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-11-28 11:43:56,104 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-11-28 11:43:56,104 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-11-28 11:43:56,105 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-11-28 11:43:56,105 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-11-28 11:43:56,106 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-11-28 11:43:56,107 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-11-28 11:43:56,107 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-11-28 11:43:56,108 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-11-28 11:43:56,108 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-11-28 11:43:56,110 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-11-28 11:43:56,111 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-11-28 11:43:56,112 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-11-28 11:43:56,113 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-11-28 11:43:56,113 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-11-28 11:43:56,115 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-11-28 11:43:56,115 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-11-28 11:43:56,115 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-11-28 11:43:56,116 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-11-28 11:43:56,117 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-11-28 11:43:56,117 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-11-28 11:43:56,118 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-11-28 11:43:56,119 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-11-28 11:43:56,119 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-11-28 11:43:56,119 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-11-28 11:43:56,119 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-11-28 11:43:56,119 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-11-28 11:43:56,120 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-11-28 11:43:56,120 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-11-28 11:43:56,121 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-11-28 11:43:56,132 INFO L110 SettingsManager]: Loading preferences was successful [2018-11-28 11:43:56,132 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-11-28 11:43:56,133 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-11-28 11:43:56,133 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-11-28 11:43:56,133 INFO L133 SettingsManager]: * Use SBE=true [2018-11-28 11:43:56,133 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-11-28 11:43:56,133 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-11-28 11:43:56,133 INFO L133 SettingsManager]: * Use old map elimination=false [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-11-28 11:43:56,134 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * sizeof long=4 [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-11-28 11:43:56,134 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * sizeof long double=12 [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Use constant arrays=true [2018-11-28 11:43:56,135 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-11-28 11:43:56,136 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-11-28 11:43:56,136 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-11-28 11:43:56,136 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-11-28 11:43:56,136 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-11-28 11:43:56,136 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-11-28 11:43:56,136 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-11-28 11:43:56,136 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-11-28 11:43:56,137 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 45b185c6c694406b0734db5727dff1b8fd93ebcf [2018-11-28 11:43:56,157 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-11-28 11:43:56,165 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-11-28 11:43:56,167 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-11-28 11:43:56,168 INFO L271 PluginConnector]: Initializing CDTParser... [2018-11-28 11:43:56,168 INFO L276 PluginConnector]: CDTParser initialized [2018-11-28 11:43:56,168 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:43:56,203 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/data/648b832d0/3998d6d9c33442feb93a03288faa1410/FLAG1a593c0da [2018-11-28 11:43:56,608 INFO L307 CDTParser]: Found 1 translation units. [2018-11-28 11:43:56,609 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:43:56,614 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/data/648b832d0/3998d6d9c33442feb93a03288faa1410/FLAG1a593c0da [2018-11-28 11:43:56,626 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/data/648b832d0/3998d6d9c33442feb93a03288faa1410 [2018-11-28 11:43:56,629 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-11-28 11:43:56,630 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-11-28 11:43:56,630 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-11-28 11:43:56,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-11-28 11:43:56,633 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-11-28 11:43:56,634 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,636 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55ce4ee9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56, skipping insertion in model container [2018-11-28 11:43:56,636 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,642 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-11-28 11:43:56,660 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-11-28 11:43:56,786 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:43:56,788 INFO L191 MainTranslator]: Completed pre-run [2018-11-28 11:43:56,812 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-11-28 11:43:56,820 INFO L195 MainTranslator]: Completed translation [2018-11-28 11:43:56,820 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56 WrapperNode [2018-11-28 11:43:56,820 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-11-28 11:43:56,821 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-11-28 11:43:56,821 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-11-28 11:43:56,821 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-11-28 11:43:56,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,866 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,885 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-11-28 11:43:56,885 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-11-28 11:43:56,885 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-11-28 11:43:56,885 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-11-28 11:43:56,891 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,891 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,892 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,892 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,897 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,903 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,904 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... [2018-11-28 11:43:56,906 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-11-28 11:43:56,907 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-11-28 11:43:56,907 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-11-28 11:43:56,907 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-11-28 11:43:56,908 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:56,942 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-11-28 11:43:56,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-11-28 11:43:57,232 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-11-28 11:43:57,232 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-11-28 11:43:57,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:57 BoogieIcfgContainer [2018-11-28 11:43:57,233 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-11-28 11:43:57,233 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-11-28 11:43:57,233 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-11-28 11:43:57,236 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-11-28 11:43:57,237 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:43:57,237 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 28.11 11:43:56" (1/3) ... [2018-11-28 11:43:57,238 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32ad033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:43:57, skipping insertion in model container [2018-11-28 11:43:57,238 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:43:57,238 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 11:43:56" (2/3) ... [2018-11-28 11:43:57,238 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@32ad033 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 28.11 11:43:57, skipping insertion in model container [2018-11-28 11:43:57,239 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-11-28 11:43:57,239 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:57" (3/3) ... [2018-11-28 11:43:57,240 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-11-28 11:43:57,270 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-11-28 11:43:57,270 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-11-28 11:43:57,270 INFO L375 BuchiCegarLoop]: Hoare is false [2018-11-28 11:43:57,270 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-11-28 11:43:57,270 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-11-28 11:43:57,271 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-11-28 11:43:57,271 INFO L379 BuchiCegarLoop]: Difference is false [2018-11-28 11:43:57,271 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-11-28 11:43:57,271 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-11-28 11:43:57,280 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 11:43:57,295 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:43:57,295 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:57,296 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:57,300 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 11:43:57,300 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:57,300 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-11-28 11:43:57,300 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-11-28 11:43:57,303 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:43:57,303 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:57,303 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:57,303 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-11-28 11:43:57,303 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:57,308 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2018-11-28 11:43:57,309 INFO L796 eck$LassoCheckResult]: Loop: 13#L47-2true assume !false; 22#L48true assume base2flt_~m % 4294967296 >= 33554432; 47#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 13#L47-2true [2018-11-28 11:43:57,313 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:57,314 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-11-28 11:43:57,315 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:57,316 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:57,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:57,348 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:57,348 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:57,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:57,429 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:57,431 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:43:57,431 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-11-28 11:43:57,434 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:57,434 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:57,434 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-11-28 11:43:57,434 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:57,434 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:57,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:57,435 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:57,435 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:57,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:57,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:57,489 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:57,490 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:57,490 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:57,490 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:57,490 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:57,491 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:57,491 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:57,491 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:57,491 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 11:43:57,491 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:57,491 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:57,508 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:57,523 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:57,596 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:57,596 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:57,599 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:57,600 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:57,631 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:43:57,631 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:57,646 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:57,646 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:57,662 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:57,662 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:57,678 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:57,679 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:57,679 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:57,679 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:57,679 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:57,679 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:57,679 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:57,679 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:57,680 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:57,680 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-11-28 11:43:57,680 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:57,680 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:57,681 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:57,685 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:57,755 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:57,759 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:57,760 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:57,761 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:57,761 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:57,761 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:57,761 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:57,762 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:57,763 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:57,763 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:57,771 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:43:57,771 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:57,772 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:57,772 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:57,772 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:57,772 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:57,772 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:57,773 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:57,773 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:57,777 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:57,781 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:57,781 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:57,782 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:57,782 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:57,782 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:57,783 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 11:43:57,783 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:57,853 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:57,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:57,865 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:57,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:57,873 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:57,874 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:57,885 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 11:43:57,886 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2018-11-28 11:43:57,943 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 70 states.. Second operand 3 states. Result 203 states and 343 transitions. Complement of second has 6 states. [2018-11-28 11:43:57,947 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:57,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:43:57,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2018-11-28 11:43:57,951 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2018-11-28 11:43:57,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:57,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:43:57,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:57,952 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2018-11-28 11:43:57,952 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:57,953 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2018-11-28 11:43:57,960 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-11-28 11:43:57,965 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2018-11-28 11:43:57,966 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-11-28 11:43:57,966 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-11-28 11:43:57,967 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-11-28 11:43:57,967 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:57,967 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-11-28 11:43:57,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-11-28 11:43:57,987 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-11-28 11:43:57,987 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-11-28 11:43:57,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-11-28 11:43:57,989 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-11-28 11:43:57,990 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:43:57,990 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:43:57,991 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-11-28 11:43:58,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:58,027 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-11-28 11:43:58,028 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:43:58,028 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-11-28 11:43:58,029 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 11:43:58,029 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 11:43:58,029 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 11:43:58,029 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 11:43:58,029 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-11-28 11:43:58,029 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:43:58,029 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:43:58,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-11-28 11:43:58,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-11-28 11:43:58,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 11:43:58,031 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-11-28 11:43:58,031 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:43:58,031 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-11-28 11:43:58,031 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-11-28 11:43:58,031 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-11-28 11:43:58,031 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-11-28 11:43:58,031 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:58,031 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:58,032 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:43:58,032 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:58,032 INFO L794 eck$LassoCheckResult]: Stem: 447#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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 445#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 418#L69 base2flt_#res := base2flt_~__retres4~0; 419#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; 442#L19-1 assume !(0 == base2flt_~m % 4294967296); 430#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 422#L47-5 [2018-11-28 11:43:58,032 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2018-11-28 11:43:58,032 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,032 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-11-28 11:43:58,032 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,032 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,033 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,033 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,070 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:43:58,070 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-11-28 11:43:58,070 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:58,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,071 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-11-28 11:43:58,071 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,071 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,072 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,072 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,102 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,102 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,102 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,102 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,102 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:58,103 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,103 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,103 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,103 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 11:43:58,103 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,103 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,104 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,111 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,171 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,171 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,172 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:58,172 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:58,194 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:43:58,194 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,208 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:58,208 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,226 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:58,226 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:58,242 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:58,243 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,243 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,243 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,243 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,243 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:58,243 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,243 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,243 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,244 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-11-28 11:43:58,244 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,244 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,244 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,249 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,297 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,297 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:58,297 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:58,298 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:58,298 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:58,298 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:58,299 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:58,299 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:58,300 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:58,300 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:58,306 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:43:58,306 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:58,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:58,307 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:58,307 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:58,307 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:58,307 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:58,308 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:58,308 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:58,310 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:58,312 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:58,312 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:58,313 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:58,313 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:58,313 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:58,313 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 11:43:58,313 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:58,330 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,341 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 11:43:58,341 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-11-28 11:43:58,353 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. [2018-11-28 11:43:58,353 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:58,354 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:43:58,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-11-28 11:43:58,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:43:58,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:43:58,354 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,354 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 11:43:58,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,355 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-11-28 11:43:58,356 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-11-28 11:43:58,356 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-11-28 11:43:58,356 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-11-28 11:43:58,356 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-11-28 11:43:58,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-11-28 11:43:58,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:58,357 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-11-28 11:43:58,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-11-28 11:43:58,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-11-28 11:43:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:43:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-11-28 11:43:58,359 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-11-28 11:43:58,359 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:43:58,359 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:43:58,359 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-11-28 11:43:58,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:58,392 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-11-28 11:43:58,392 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:43:58,393 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-11-28 11:43:58,393 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:43:58,393 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-11-28 11:43:58,393 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-11-28 11:43:58,394 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-11-28 11:43:58,394 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-11-28 11:43:58,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:43:58,394 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-11-28 11:43:58,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-11-28 11:43:58,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-11-28 11:43:58,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-11-28 11:43:58,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-11-28 11:43:58,395 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 11:43:58,395 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-11-28 11:43:58,395 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-11-28 11:43:58,396 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-11-28 11:43:58,396 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:43:58,396 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:58,396 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:58,396 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-11-28 11:43:58,396 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:58,396 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 11:43:58,397 INFO L796 eck$LassoCheckResult]: Loop: 641#L37-3 assume !false; 650#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 651#L37-2 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-11-28 11:43:58,397 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,397 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-11-28 11:43:58,397 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,397 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,397 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,398 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,398 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,409 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,409 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-11-28 11:43:58,409 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,410 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,410 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,410 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,413 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,414 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-11-28 11:43:58,414 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,414 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,414 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,414 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,446 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,446 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,446 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,446 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,446 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:58,446 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,446 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,446 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,446 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 11:43:58,447 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,447 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,447 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,452 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,503 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,503 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,510 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:58,510 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:58,519 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:43:58,519 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,533 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:58,533 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,549 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:58,549 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:58,565 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:58,566 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,566 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,566 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,566 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,566 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:58,566 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,566 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,566 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,566 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-11-28 11:43:58,566 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,566 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,567 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,571 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,609 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,610 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:58,610 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:58,611 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:58,611 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:58,611 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:58,611 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:58,611 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:58,612 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:58,612 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:58,613 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:43:58,614 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:58,614 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:58,614 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:58,614 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:58,614 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:58,615 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:58,615 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:58,615 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:58,617 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:58,619 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:58,619 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:58,620 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:58,620 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:58,620 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:58,620 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 11:43:58,620 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:58,631 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,640 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,643 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,661 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,661 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:43:58,661 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 11:43:58,668 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. [2018-11-28 11:43:58,669 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:58,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:43:58,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:43:58,669 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-11-28 11:43:58,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:43:58,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,670 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-11-28 11:43:58,670 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,671 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-11-28 11:43:58,671 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-11-28 11:43:58,672 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-11-28 11:43:58,672 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-11-28 11:43:58,672 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-11-28 11:43:58,673 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-11-28 11:43:58,673 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:58,673 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-11-28 11:43:58,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-11-28 11:43:58,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-11-28 11:43:58,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-11-28 11:43:58,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-11-28 11:43:58,674 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 11:43:58,674 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-11-28 11:43:58,674 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-11-28 11:43:58,675 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-11-28 11:43:58,675 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 11:43:58,675 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:58,675 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:58,675 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:43:58,675 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:58,676 INFO L794 eck$LassoCheckResult]: Stem: 797#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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 794#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 770#L69 base2flt_#res := base2flt_~__retres4~0; 771#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; 791#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 782#L69-1 base2flt_#res := base2flt_~__retres4~0; 783#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; 786#L19-2 assume !(0 == base2flt_~m % 4294967296); 776#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 769#L47-8 [2018-11-28 11:43:58,676 INFO L796 eck$LassoCheckResult]: Loop: 769#L47-8 assume !false; 792#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 767#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 769#L47-8 [2018-11-28 11:43:58,676 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-11-28 11:43:58,676 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,676 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,677 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,677 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:43:58,705 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-11-28 11:43:58,705 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:58,705 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,705 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-11-28 11:43:58,705 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,705 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,706 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,706 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,722 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,723 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,723 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,723 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,723 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:58,723 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,723 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,723 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,723 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 11:43:58,723 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,723 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,724 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,729 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,799 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,799 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,803 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:58,803 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,828 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:58,828 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:58,844 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:58,845 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,845 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,845 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,845 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,845 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:58,845 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,846 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,846 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,846 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-11-28 11:43:58,846 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,846 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,846 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,850 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,891 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:58,891 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:58,891 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:58,892 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:58,892 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:58,892 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:58,892 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:58,892 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:58,892 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:58,892 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:58,893 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:58,895 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:58,895 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:58,895 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:58,895 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:58,895 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:58,895 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 11:43:58,895 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:58,903 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,910 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,913 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:58,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,913 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 11:43:58,913 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 11:43:58,922 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. [2018-11-28 11:43:58,922 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:58,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:43:58,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:43:58,922 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-11-28 11:43:58,922 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 11:43:58,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,923 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-11-28 11:43:58,923 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:58,923 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-11-28 11:43:58,924 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-11-28 11:43:58,924 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-11-28 11:43:58,924 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-11-28 11:43:58,924 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-11-28 11:43:58,924 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-11-28 11:43:58,924 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:58,924 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-11-28 11:43:58,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-11-28 11:43:58,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-11-28 11:43:58,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:43:58,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-11-28 11:43:58,926 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-11-28 11:43:58,926 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-11-28 11:43:58,926 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-11-28 11:43:58,927 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-11-28 11:43:58,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:58,952 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-11-28 11:43:58,952 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-11-28 11:43:58,952 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-11-28 11:43:58,952 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 11:43:58,953 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-11-28 11:43:58,953 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-11-28 11:43:58,953 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-11-28 11:43:58,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-11-28 11:43:58,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:58,953 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-11-28 11:43:58,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-11-28 11:43:58,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-11-28 11:43:58,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:43:58,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-11-28 11:43:58,954 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 11:43:58,954 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-11-28 11:43:58,954 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-11-28 11:43:58,955 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-11-28 11:43:58,955 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-11-28 11:43:58,955 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:58,955 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:58,955 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:43:58,955 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:58,955 INFO L794 eck$LassoCheckResult]: Stem: 1018#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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1015#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 989#L69 base2flt_#res := base2flt_~__retres4~0; 990#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; 1011#L19-1 assume !(0 == base2flt_~m % 4294967296); 998#L25-1 assume base2flt_~m % 4294967296 < 16777216; 999#L37-3 assume !false; 1008#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1002#L69-1 base2flt_#res := base2flt_~__retres4~0; 1003#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; 1006#L19-2 assume !(0 == base2flt_~m % 4294967296); 995#L25-2 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 11:43:58,956 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-11-28 11:43:58,956 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,956 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-11-28 11:43:58,956 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,956 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,957 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,957 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:58,971 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:58,971 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:43:58,971 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:43:58,972 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:58,972 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:58,972 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-11-28 11:43:58,972 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:58,972 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:58,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:58,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:58,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:58,987 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:58,988 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:58,988 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:58,988 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:58,988 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:58,988 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:58,988 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:58,988 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:58,988 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 11:43:58,988 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:58,988 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:58,989 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:58,992 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,027 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,027 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,029 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:59,029 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:59,036 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:43:59,036 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,051 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:59,051 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,067 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:59,067 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:59,082 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:59,083 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:59,083 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:59,083 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:59,083 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:59,083 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:59,083 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,083 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:59,083 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:59,083 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-11-28 11:43:59,084 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:59,084 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:59,084 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,089 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,119 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,120 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:59,120 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:59,120 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:59,120 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:59,120 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:59,120 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:59,120 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:59,121 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:59,121 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:59,123 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:43:59,124 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:59,124 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:59,124 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:59,124 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:59,124 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:59,124 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:59,125 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:59,125 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:59,126 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:59,128 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:59,128 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:59,129 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:59,129 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:59,129 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:59,129 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 11:43:59,129 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:59,138 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,144 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,151 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,179 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:43:59,179 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-11-28 11:43:59,187 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. [2018-11-28 11:43:59,187 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:59,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:43:59,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-11-28 11:43:59,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-11-28 11:43:59,188 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,188 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-11-28 11:43:59,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,189 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-11-28 11:43:59,189 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,189 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-11-28 11:43:59,189 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-11-28 11:43:59,190 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-11-28 11:43:59,190 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-11-28 11:43:59,190 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-11-28 11:43:59,190 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-11-28 11:43:59,190 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:59,190 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-11-28 11:43:59,191 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-11-28 11:43:59,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-11-28 11:43:59,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:43:59,192 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-11-28 11:43:59,192 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-11-28 11:43:59,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:43:59,193 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:43:59,193 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-11-28 11:43:59,232 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:59,233 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-11-28 11:43:59,233 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:43:59,233 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-11-28 11:43:59,233 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 11:43:59,233 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-11-28 11:43:59,233 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-11-28 11:43:59,233 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-11-28 11:43:59,234 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-11-28 11:43:59,234 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:59,234 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-11-28 11:43:59,234 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-11-28 11:43:59,234 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-11-28 11:43:59,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-11-28 11:43:59,235 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-11-28 11:43:59,235 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 11:43:59,235 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-11-28 11:43:59,235 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-11-28 11:43:59,235 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-11-28 11:43:59,235 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-11-28 11:43:59,235 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:59,235 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:59,235 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:43:59,235 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:59,236 INFO L794 eck$LassoCheckResult]: Stem: 1266#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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1261#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1234#L69 base2flt_#res := base2flt_~__retres4~0; 1235#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; 1257#L19-1 assume !(0 == base2flt_~m % 4294967296); 1243#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1244#L37-3 assume !false; 1255#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1256#L37-2 assume !(base2flt_~m % 4294967296 < 16777216); 1262#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; 1247#L69-1 base2flt_#res := base2flt_~__retres4~0; 1248#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; 1252#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1231#L69-2 base2flt_#res := base2flt_~__retres4~0; 1245#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; 1253#L19-3 assume !(0 == base2flt_~m % 4294967296); 1238#L25-3 assume !(base2flt_~m % 4294967296 < 16777216); 1239#L47-11 [2018-11-28 11:43:59,236 INFO L796 eck$LassoCheckResult]: Loop: 1239#L47-11 assume !false; 1268#L48-3 assume base2flt_~m % 4294967296 >= 33554432; 1246#L49-3 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 1239#L47-11 [2018-11-28 11:43:59,236 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,236 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-11-28 11:43:59,236 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:59,236 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:59,236 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,236 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:59,237 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,280 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,280 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-11-28 11:43:59,280 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-11-28 11:43:59,280 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:59,280 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,280 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-11-28 11:43:59,281 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:59,281 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,281 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:59,281 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:59,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:59,318 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:59,318 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:59,318 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:59,318 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:59,318 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:59,318 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,319 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:59,319 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:59,319 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 11:43:59,319 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:59,319 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:59,320 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,324 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,360 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,360 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/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 [2018-11-28 11:43:59,362 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:59,362 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,387 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:59,388 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:59,403 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:59,404 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:59,404 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:59,405 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:59,405 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:59,405 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:59,405 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,405 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:59,405 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:59,405 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-11-28 11:43:59,405 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:59,405 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:59,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,409 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,443 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,443 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:59,444 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:59,444 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:59,444 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:59,444 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:59,445 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:59,445 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:59,445 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:59,445 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:59,447 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:59,448 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:59,448 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:59,448 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:59,448 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:59,449 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:59,449 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-11-28 11:43:59,449 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:59,464 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,472 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,475 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,475 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-11-28 11:43:59,475 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-11-28 11:43:59,478 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. [2018-11-28 11:43:59,478 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:59,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-11-28 11:43:59,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-11-28 11:43:59,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-11-28 11:43:59,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-11-28 11:43:59,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,479 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-11-28 11:43:59,479 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,479 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-11-28 11:43:59,480 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:43:59,480 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-11-28 11:43:59,480 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-11-28 11:43:59,481 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-11-28 11:43:59,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-11-28 11:43:59,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:59,481 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 11:43:59,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-11-28 11:43:59,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-11-28 11:43:59,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-11-28 11:43:59,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-11-28 11:43:59,483 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-11-28 11:43:59,483 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-11-28 11:43:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-11-28 11:43:59,483 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-11-28 11:43:59,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:59,517 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-11-28 11:43:59,517 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-11-28 11:43:59,517 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-11-28 11:43:59,518 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:43:59,518 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-11-28 11:43:59,518 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-11-28 11:43:59,518 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-11-28 11:43:59,518 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-11-28 11:43:59,518 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-11-28 11:43:59,518 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-11-28 11:43:59,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-11-28 11:43:59,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-11-28 11:43:59,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-11-28 11:43:59,520 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-11-28 11:43:59,520 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 11:43:59,520 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-11-28 11:43:59,520 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-11-28 11:43:59,520 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-11-28 11:43:59,521 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-11-28 11:43:59,521 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-11-28 11:43:59,521 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-11-28 11:43:59,521 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-11-28 11:43:59,522 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-11-28 11:43:59,522 INFO L794 eck$LassoCheckResult]: Stem: 1506#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_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;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; 1503#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1478#L69 base2flt_#res := base2flt_~__retres4~0; 1479#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; 1499#L19-1 assume !(0 == base2flt_~m % 4294967296); 1486#L25-1 assume base2flt_~m % 4294967296 < 16777216; 1487#L37-3 assume !false; 1497#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1498#L37-2 assume base2flt_~m % 4294967296 < 16777216; 1509#L37-3 assume !false; 1496#L28-1 assume base2flt_~e <= -128;base2flt_~__retres4~0 := 0; 1489#L69-1 base2flt_#res := base2flt_~__retres4~0; 1490#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; 1494#L19-2 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 1475#L69-2 base2flt_#res := base2flt_~__retres4~0; 1488#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; 1495#L19-3 assume !(0 == base2flt_~m % 4294967296); 1482#L25-3 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 11:43:59,522 INFO L796 eck$LassoCheckResult]: Loop: 1480#L37-7 assume !false; 1481#L28-3 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1505#L37-6 assume base2flt_~m % 4294967296 < 16777216; 1480#L37-7 [2018-11-28 11:43:59,522 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,522 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-11-28 11:43:59,522 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:59,522 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:59,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,523 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:59,523 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,560 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,561 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-11-28 11:43:59,561 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/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 [2018-11-28 11:43:59,566 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:59,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,576 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,595 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-11-28 11:43:59,595 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-11-28 11:43:59,596 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-11-28 11:43:59,596 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,596 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-11-28 11:43:59,596 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-11-28 11:43:59,596 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-11-28 11:43:59,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,597 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-11-28 11:43:59,597 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-11-28 11:43:59,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:59,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-11-28 11:43:59,610 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:59,611 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:59,611 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:59,611 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:59,611 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-11-28 11:43:59,611 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,611 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:59,611 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:59,611 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 11:43:59,611 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:59,611 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:59,612 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,615 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,641 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,641 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/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 [2018-11-28 11:43:59,643 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:59,643 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:59,649 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-11-28 11:43:59,649 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_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,664 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-11-28 11:43:59,664 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_8b76ac9a-1c57-4a26-aa4e-ef61c5ca27da/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,681 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-11-28 11:43:59,681 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-11-28 11:43:59,696 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-11-28 11:43:59,697 INFO L216 LassoAnalysis]: Preferences: [2018-11-28 11:43:59,697 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-11-28 11:43:59,697 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-11-28 11:43:59,697 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-11-28 11:43:59,697 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-11-28 11:43:59,697 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-11-28 11:43:59,698 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-11-28 11:43:59,698 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-11-28 11:43:59,698 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-11-28 11:43:59,698 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-11-28 11:43:59,698 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-11-28 11:43:59,698 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,702 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-11-28 11:43:59,728 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-11-28 11:43:59,728 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-11-28 11:43:59,729 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:59,729 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:59,729 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:59,729 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:59,729 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:59,729 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:59,730 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:59,731 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:59,732 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-11-28 11:43:59,732 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-11-28 11:43:59,732 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-11-28 11:43:59,732 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-11-28 11:43:59,732 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-11-28 11:43:59,733 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-11-28 11:43:59,733 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-11-28 11:43:59,733 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-11-28 11:43:59,733 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-11-28 11:43:59,734 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-11-28 11:43:59,736 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-11-28 11:43:59,736 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-11-28 11:43:59,736 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-11-28 11:43:59,736 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-11-28 11:43:59,736 INFO L518 LassoAnalysis]: Proved termination. [2018-11-28 11:43:59,736 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-11-28 11:43:59,737 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-11-28 11:43:59,753 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-11-28 11:43:59,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,765 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-11-28 11:43:59,770 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-11-28 11:43:59,780 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-11-28 11:43:59,780 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-11-28 11:43:59,780 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-11-28 11:43:59,795 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. [2018-11-28 11:43:59,797 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-11-28 11:43:59,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-11-28 11:43:59,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-11-28 11:43:59,797 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-11-28 11:43:59,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-11-28 11:43:59,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,798 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-11-28 11:43:59,798 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-11-28 11:43:59,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-11-28 11:43:59,799 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:43:59,799 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-11-28 11:43:59,799 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:43:59,799 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:43:59,799 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:43:59,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:43:59,800 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:43:59,800 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:43:59,800 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-11-28 11:43:59,800 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-11-28 11:43:59,800 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-11-28 11:43:59,800 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-11-28 11:43:59,800 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-11-28 11:43:59,801 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-11-28 11:43:59,801 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-11-28 11:43:59,801 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:43:59,801 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-11-28 11:43:59,801 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-11-28 11:43:59,801 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-11-28 11:43:59,801 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-11-28 11:43:59,801 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-11-28 11:43:59,801 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:43:59,802 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:43:59,802 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-11-28 11:43:59,802 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-11-28 11:43:59,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-11-28 11:43:59,802 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-11-28 11:43:59,802 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-11-28 11:43:59,808 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 28.11 11:43:59 BoogieIcfgContainer [2018-11-28 11:43:59,808 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-11-28 11:43:59,808 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-11-28 11:43:59,808 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-11-28 11:43:59,808 INFO L276 PluginConnector]: Witness Printer initialized [2018-11-28 11:43:59,809 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 11:43:57" (3/4) ... [2018-11-28 11:43:59,812 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-11-28 11:43:59,812 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-11-28 11:43:59,812 INFO L168 Benchmark]: Toolchain (without parser) took 3183.28 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 953.3 MB in the beginning and 882.3 MB in the end (delta: 71.1 MB). Peak memory consumption was 190.1 MB. Max. memory is 11.5 GB. [2018-11-28 11:43:59,814 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:43:59,814 INFO L168 Benchmark]: CACSL2BoogieTranslator took 190.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. [2018-11-28 11:43:59,814 INFO L168 Benchmark]: Boogie Procedure Inliner took 64.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. [2018-11-28 11:43:59,815 INFO L168 Benchmark]: Boogie Preprocessor took 21.67 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. [2018-11-28 11:43:59,815 INFO L168 Benchmark]: RCFGBuilder took 326.07 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. [2018-11-28 11:43:59,815 INFO L168 Benchmark]: BuchiAutomizer took 2574.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 882.3 MB in the end (delta: 201.6 MB). Peak memory consumption was 201.6 MB. Max. memory is 11.5 GB. [2018-11-28 11:43:59,816 INFO L168 Benchmark]: Witness Printer took 3.67 ms. Allocated memory is still 1.1 GB. Free memory is still 882.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-11-28 11:43:59,817 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 1.0 GB. Free memory is still 979.6 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 190.04 ms. Allocated memory is still 1.0 GB. Free memory was 953.3 MB in the beginning and 939.9 MB in the end (delta: 13.4 MB). Peak memory consumption was 13.4 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 64.10 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.0 MB). Free memory was 939.9 MB in the beginning and 1.1 GB in the end (delta: -177.1 MB). Peak memory consumption was 12.9 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 21.67 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 326.07 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: 30.5 MB). Peak memory consumption was 30.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2574.50 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 882.3 MB in the end (delta: 201.6 MB). Peak memory consumption was 201.6 MB. Max. memory is 11.5 GB. * Witness Printer took 3.67 ms. Allocated memory is still 1.1 GB. Free memory is still 882.3 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 2.5s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.8s. Construction of modules took 0.1s. Büchi inclusion checks took 0.4s. 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: 542 SDtfs, 373 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: 11ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...