./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 635dfa2a Calling Ultimate with: java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/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 0.1.23-635dfa2 [2018-12-09 15:25:21,233 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-09 15:25:21,234 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-09 15:25:21,240 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-09 15:25:21,241 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-09 15:25:21,241 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-09 15:25:21,242 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-09 15:25:21,243 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-09 15:25:21,243 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-09 15:25:21,244 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-09 15:25:21,244 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-09 15:25:21,245 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-09 15:25:21,245 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-09 15:25:21,246 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-09 15:25:21,246 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-09 15:25:21,247 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-09 15:25:21,247 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-09 15:25:21,248 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-09 15:25:21,249 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-09 15:25:21,250 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-09 15:25:21,250 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-09 15:25:21,251 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-09 15:25:21,252 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-09 15:25:21,252 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-09 15:25:21,252 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-09 15:25:21,253 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-09 15:25:21,253 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-09 15:25:21,254 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-09 15:25:21,254 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-09 15:25:21,255 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-09 15:25:21,255 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-09 15:25:21,255 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-09 15:25:21,256 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-09 15:25:21,256 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-09 15:25:21,256 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-09 15:25:21,257 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-09 15:25:21,257 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-09 15:25:21,264 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-09 15:25:21,265 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-09 15:25:21,265 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-09 15:25:21,265 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * Use SBE=true [2018-12-09 15:25:21,266 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-09 15:25:21,266 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-09 15:25:21,267 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-09 15:25:21,267 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-09 15:25:21,268 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-09 15:25:21,268 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-09 15:25:21,269 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-09 15:25:21,269 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-09 15:25:21,269 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-09 15:25:21,269 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-09 15:25:21,269 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-09 15:25:21,270 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-09 15:25:21,270 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_cd86999d-d898-496a-a287-23bf5f5de5fa/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 [2018-12-09 15:25:21,292 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-09 15:25:21,301 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-09 15:25:21,304 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-09 15:25:21,305 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-09 15:25:21,305 INFO L276 PluginConnector]: CDTParser initialized [2018-12-09 15:25:21,306 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-09 15:25:21,346 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/data/6339ed919/a24ae1c3e8474bb9947cb8bf72cc530e/FLAG7767f141e [2018-12-09 15:25:21,667 INFO L307 CDTParser]: Found 1 translation units. [2018-12-09 15:25:21,668 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/sv-benchmarks/c/bitvector/soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-09 15:25:21,672 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/data/6339ed919/a24ae1c3e8474bb9947cb8bf72cc530e/FLAG7767f141e [2018-12-09 15:25:21,680 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/data/6339ed919/a24ae1c3e8474bb9947cb8bf72cc530e [2018-12-09 15:25:21,681 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-09 15:25:21,682 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-09 15:25:21,683 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-09 15:25:21,683 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-09 15:25:21,685 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-09 15:25:21,685 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,687 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47e9f86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21, skipping insertion in model container [2018-12-09 15:25:21,687 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,691 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-09 15:25:21,704 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-09 15:25:21,805 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:25:21,808 INFO L191 MainTranslator]: Completed pre-run [2018-12-09 15:25:21,829 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-09 15:25:21,837 INFO L195 MainTranslator]: Completed translation [2018-12-09 15:25:21,837 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21 WrapperNode [2018-12-09 15:25:21,837 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-09 15:25:21,838 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-09 15:25:21,838 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-09 15:25:21,838 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-09 15:25:21,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,847 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,892 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-09 15:25:21,892 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-09 15:25:21,892 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-09 15:25:21,892 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-09 15:25:21,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,899 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,899 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,902 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,906 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,907 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... [2018-12-09 15:25:21,909 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-09 15:25:21,909 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-09 15:25:21,909 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-09 15:25:21,909 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-09 15:25:21,910 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:21,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-09 15:25:21,943 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-09 15:25:22,194 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-09 15:25:22,195 INFO L280 CfgBuilder]: Removed 24 assue(true) statements. [2018-12-09 15:25:22,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:22 BoogieIcfgContainer [2018-12-09 15:25:22,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-09 15:25:22,195 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-09 15:25:22,195 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-09 15:25:22,197 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-09 15:25:22,198 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 15:25:22,198 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 09.12 03:25:21" (1/3) ... [2018-12-09 15:25:22,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d162dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 03:25:22, skipping insertion in model container [2018-12-09 15:25:22,199 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 15:25:22,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 03:25:21" (2/3) ... [2018-12-09 15:25:22,199 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@6d162dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 09.12 03:25:22, skipping insertion in model container [2018-12-09 15:25:22,199 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-09 15:25:22,199 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:22" (3/3) ... [2018-12-09 15:25:22,201 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-09 15:25:22,232 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-09 15:25:22,232 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-09 15:25:22,232 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-09 15:25:22,232 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-09 15:25:22,232 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-09 15:25:22,232 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-09 15:25:22,232 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-09 15:25:22,232 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-09 15:25:22,232 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-09 15:25:22,241 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-12-09 15:25:22,255 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-09 15:25:22,255 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:22,255 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:22,259 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-09 15:25:22,259 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:22,259 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-09 15:25:22,259 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 70 states. [2018-12-09 15:25:22,262 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-09 15:25:22,262 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:22,262 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:22,262 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-09 15:25:22,262 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:22,267 INFO L794 eck$LassoCheckResult]: Stem: 34#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 17#L25true assume !(base2flt_~m % 4294967296 < 16777216); 13#L47-2true [2018-12-09 15:25:22,267 INFO L796 eck$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 [2018-12-09 15:25:22,270 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:22,270 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-12-09 15:25:22,271 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:22,272 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:22,299 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,300 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:22,300 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:22,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:22,357 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:25:22,357 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-09 15:25:22,360 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:22,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:22,360 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-12-09 15:25:22,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:22,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:22,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,361 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:22,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:22,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:22,400 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:22,401 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:22,401 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:22,401 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:22,401 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:22,401 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,402 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:22,402 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:22,402 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-09 15:25:22,402 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:22,402 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:22,414 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,424 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,495 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:22,496 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,499 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:22,499 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:22,521 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 15:25:22,521 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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,536 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:22,536 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,552 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:22,552 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:22,570 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:22,571 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:22,571 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:22,571 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:22,571 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:22,571 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:22,571 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,571 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:22,571 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:22,571 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-09 15:25:22,571 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:22,571 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:22,572 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,576 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,621 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:22,624 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:22,625 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:22,626 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:22,626 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:22,626 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:22,626 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:22,626 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:22,628 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:22,628 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:22,633 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 15:25:22,633 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:22,634 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:22,634 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:22,634 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:22,634 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:22,634 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:22,635 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:22,635 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:22,637 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:22,639 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:22,640 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:22,641 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:22,641 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:22,641 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:22,641 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-09 15:25:22,642 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:22,661 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:22,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:22,668 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:22,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:22,674 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:22,675 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:22,684 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 15:25:22,685 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 70 states. Second operand 3 states. [2018-12-09 15:25:22,729 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. [2018-12-09 15:25:22,729 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:22,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 15:25:22,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 227 transitions. [2018-12-09 15:25:22,732 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-09 15:25:22,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:22,733 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-09 15:25:22,733 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:22,734 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 227 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-09 15:25:22,734 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:22,734 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 203 states and 343 transitions. [2018-12-09 15:25:22,738 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2018-12-09 15:25:22,742 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 203 states to 78 states and 119 transitions. [2018-12-09 15:25:22,743 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 74 [2018-12-09 15:25:22,743 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 75 [2018-12-09 15:25:22,744 INFO L73 IsDeterministic]: Start isDeterministic. Operand 78 states and 119 transitions. [2018-12-09 15:25:22,744 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:22,744 INFO L705 BuchiCegarLoop]: Abstraction has 78 states and 119 transitions. [2018-12-09 15:25:22,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states and 119 transitions. [2018-12-09 15:25:22,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 67. [2018-12-09 15:25:22,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2018-12-09 15:25:22,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 107 transitions. [2018-12-09 15:25:22,764 INFO L728 BuchiCegarLoop]: Abstraction has 67 states and 107 transitions. [2018-12-09 15:25:22,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:25:22,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:25:22,767 INFO L87 Difference]: Start difference. First operand 67 states and 107 transitions. Second operand 3 states. [2018-12-09 15:25:22,798 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:22,798 INFO L93 Difference]: Finished difference Result 34 states and 47 transitions. [2018-12-09 15:25:22,798 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:25:22,799 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 34 states and 47 transitions. [2018-12-09 15:25:22,799 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-09 15:25:22,800 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 34 states to 34 states and 47 transitions. [2018-12-09 15:25:22,800 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-09 15:25:22,800 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-09 15:25:22,800 INFO L73 IsDeterministic]: Start isDeterministic. Operand 34 states and 47 transitions. [2018-12-09 15:25:22,800 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 15:25:22,800 INFO L705 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-09 15:25:22,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states and 47 transitions. [2018-12-09 15:25:22,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2018-12-09 15:25:22,801 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 15:25:22,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 47 transitions. [2018-12-09 15:25:22,802 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-09 15:25:22,802 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 47 transitions. [2018-12-09 15:25:22,802 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-09 15:25:22,802 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 47 transitions. [2018-12-09 15:25:22,802 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-09 15:25:22,803 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:22,803 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:22,803 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-09 15:25:22,803 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:22,803 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 [2018-12-09 15:25:22,803 INFO L796 eck$LassoCheckResult]: Loop: 422#L47-5 assume !false; 425#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 420#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 422#L47-5 [2018-12-09 15:25:22,803 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:22,804 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-12-09 15:25:22,804 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:22,804 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:22,804 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,804 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:22,805 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:22,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:22,830 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:25:22,830 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2018-12-09 15:25:22,830 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:22,830 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:22,830 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-12-09 15:25:22,831 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:22,831 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:22,831 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,832 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:22,832 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:22,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:22,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:22,852 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:22,852 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:22,853 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:22,853 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:22,853 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:22,853 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,853 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:22,853 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:22,853 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-09 15:25:22,853 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:22,853 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:22,854 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,858 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,902 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:22,902 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,904 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:22,904 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:22,925 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 15:25:22,925 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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,939 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:22,940 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,956 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:22,956 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:22,972 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:22,973 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:22,973 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:22,973 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:22,973 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:22,973 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:22,973 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:22,973 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:22,973 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:22,973 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-09 15:25:22,973 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:22,973 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:22,974 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:22,981 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,028 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,028 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:23,029 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,029 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,029 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,030 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,030 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,030 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,030 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,030 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,034 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 15:25:23,035 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,035 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,035 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,035 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,035 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,035 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,036 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,036 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,038 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:23,039 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:23,039 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:23,039 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:23,039 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:23,040 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:23,040 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-09 15:25:23,040 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:23,048 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,054 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,057 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,058 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,058 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 15:25:23,058 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19 Second operand 3 states. [2018-12-09 15:25:23,068 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 47 transitions. cyclomatic complexity: 19. Second operand 3 states. Result 62 states and 84 transitions. Complement of second has 5 states. [2018-12-09 15:25:23,069 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:23,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 15:25:23,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 49 transitions. [2018-12-09 15:25:23,069 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-09 15:25:23,069 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 15:25:23,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,070 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 49 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-09 15:25:23,070 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,070 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 84 transitions. [2018-12-09 15:25:23,071 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-12-09 15:25:23,072 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 59 states and 80 transitions. [2018-12-09 15:25:23,072 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 55 [2018-12-09 15:25:23,072 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 56 [2018-12-09 15:25:23,072 INFO L73 IsDeterministic]: Start isDeterministic. Operand 59 states and 80 transitions. [2018-12-09 15:25:23,073 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,073 INFO L705 BuchiCegarLoop]: Abstraction has 59 states and 80 transitions. [2018-12-09 15:25:23,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states and 80 transitions. [2018-12-09 15:25:23,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 37. [2018-12-09 15:25:23,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 15:25:23,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 51 transitions. [2018-12-09 15:25:23,075 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 51 transitions. [2018-12-09 15:25:23,075 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:25:23,075 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:25:23,075 INFO L87 Difference]: Start difference. First operand 37 states and 51 transitions. Second operand 3 states. [2018-12-09 15:25:23,102 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:23,102 INFO L93 Difference]: Finished difference Result 35 states and 46 transitions. [2018-12-09 15:25:23,102 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:25:23,102 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 46 transitions. [2018-12-09 15:25:23,103 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-09 15:25:23,103 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 46 transitions. [2018-12-09 15:25:23,103 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2018-12-09 15:25:23,104 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-12-09 15:25:23,104 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 46 transitions. [2018-12-09 15:25:23,104 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 15:25:23,104 INFO L705 BuchiCegarLoop]: Abstraction has 35 states and 46 transitions. [2018-12-09 15:25:23,104 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 46 transitions. [2018-12-09 15:25:23,105 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2018-12-09 15:25:23,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2018-12-09 15:25:23,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 41 transitions. [2018-12-09 15:25:23,106 INFO L728 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-09 15:25:23,106 INFO L608 BuchiCegarLoop]: Abstraction has 31 states and 41 transitions. [2018-12-09 15:25:23,106 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-09 15:25:23,106 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 31 states and 41 transitions. [2018-12-09 15:25:23,107 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-09 15:25:23,107 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:23,107 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:23,107 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-09 15:25:23,107 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:23,108 INFO L794 eck$LassoCheckResult]: Stem: 658#ULTIMATE.startENTRY havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_mul~0, main_~zero~0, main_~one~0, main_~sa~0, main_~tmp~2, main_~tmp___0~0, main_~tmp___1~0, main_~__retres16~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_mul~0;havoc main_~zero~0;havoc main_~one~0;havoc main_~sa~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~tmp___1~0;havoc main_~__retres16~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 655#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 632#L69 base2flt_#res := base2flt_~__retres4~0; 633#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;base2flt_#in~m, base2flt_#in~e := 1, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 652#L19-1 assume !(0 == base2flt_~m % 4294967296); 640#L25-1 assume base2flt_~m % 4294967296 < 16777216; 641#L37-3 [2018-12-09 15:25:23,108 INFO L796 eck$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 [2018-12-09 15:25:23,108 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,108 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-12-09 15:25:23,108 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,108 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,109 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,109 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,121 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-12-09 15:25:23,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,126 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-12-09 15:25:23,126 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,126 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,127 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,127 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,151 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,152 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,152 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,152 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,152 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:23,152 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,152 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,152 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,152 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-09 15:25:23,152 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,152 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,153 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,158 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,201 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,201 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,203 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,203 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:23,210 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 15:25:23,210 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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,224 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,240 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:23,240 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:23,255 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:23,256 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,256 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,256 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,257 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,257 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:23,257 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,257 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,257 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,257 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-09 15:25:23,257 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,257 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,258 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,262 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,302 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,302 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:23,302 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,303 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,303 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,303 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,303 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,303 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,304 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,304 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,305 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 15:25:23,306 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 [2018-12-09 15:25:23,306 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,306 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,306 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,306 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,306 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,307 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,307 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,309 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:23,310 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:23,310 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:23,310 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:23,310 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:23,311 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:23,311 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-09 15:25:23,311 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:23,324 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,329 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,332 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,346 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,347 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 15:25:23,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-09 15:25:23,354 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 31 states and 41 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 59 states and 78 transitions. Complement of second has 5 states. [2018-12-09 15:25:23,355 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:23,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 15:25:23,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-09 15:25:23,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-09 15:25:23,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,355 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 15:25:23,355 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,356 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-09 15:25:23,356 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,356 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 59 states and 78 transitions. [2018-12-09 15:25:23,356 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2018-12-09 15:25:23,357 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 59 states to 56 states and 74 transitions. [2018-12-09 15:25:23,357 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 50 [2018-12-09 15:25:23,357 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-12-09 15:25:23,357 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 74 transitions. [2018-12-09 15:25:23,357 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,357 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 74 transitions. [2018-12-09 15:25:23,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 74 transitions. [2018-12-09 15:25:23,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 34. [2018-12-09 15:25:23,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2018-12-09 15:25:23,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 45 transitions. [2018-12-09 15:25:23,359 INFO L728 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-09 15:25:23,359 INFO L608 BuchiCegarLoop]: Abstraction has 34 states and 45 transitions. [2018-12-09 15:25:23,359 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-09 15:25:23,359 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 34 states and 45 transitions. [2018-12-09 15:25:23,359 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-09 15:25:23,359 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:23,359 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:23,359 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:25:23,359 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:23,360 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 [2018-12-09 15:25:23,360 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 [2018-12-09 15:25:23,360 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,360 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-12-09 15:25:23,360 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,360 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,360 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,360 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,361 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,383 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,383 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:25:23,383 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2018-12-09 15:25:23,383 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:23,383 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,383 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-12-09 15:25:23,383 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,383 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,384 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,384 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,405 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,405 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,405 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,405 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,405 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:23,405 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,405 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,405 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,405 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-09 15:25:23,405 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,405 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,406 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,413 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,450 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,450 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,454 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,454 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,469 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:23,469 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:23,485 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:23,486 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,486 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,486 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,486 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,486 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:23,486 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,486 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,486 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,486 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-09 15:25:23,486 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,486 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,487 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,491 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,534 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,535 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:23,535 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,535 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,536 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,536 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,536 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,536 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,537 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,537 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,538 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:23,539 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:23,539 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:23,540 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:23,540 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:23,540 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:23,540 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-09 15:25:23,540 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:23,549 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,556 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,558 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,558 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,559 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 15:25:23,559 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-09 15:25:23,566 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 34 states and 45 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 51 states and 65 transitions. Complement of second has 5 states. [2018-12-09 15:25:23,567 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:23,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 15:25:23,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-09 15:25:23,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-09 15:25:23,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-09 15:25:23,567 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,567 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-09 15:25:23,568 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,568 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 51 states and 65 transitions. [2018-12-09 15:25:23,568 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-09 15:25:23,568 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 51 states to 48 states and 61 transitions. [2018-12-09 15:25:23,568 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2018-12-09 15:25:23,569 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 42 [2018-12-09 15:25:23,569 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 61 transitions. [2018-12-09 15:25:23,569 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,569 INFO L705 BuchiCegarLoop]: Abstraction has 48 states and 61 transitions. [2018-12-09 15:25:23,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states and 61 transitions. [2018-12-09 15:25:23,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 37. [2018-12-09 15:25:23,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 15:25:23,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 49 transitions. [2018-12-09 15:25:23,570 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 49 transitions. [2018-12-09 15:25:23,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-09 15:25:23,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-09 15:25:23,570 INFO L87 Difference]: Start difference. First operand 37 states and 49 transitions. Second operand 3 states. [2018-12-09 15:25:23,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:23,593 INFO L93 Difference]: Finished difference Result 41 states and 52 transitions. [2018-12-09 15:25:23,593 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-09 15:25:23,593 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 41 states and 52 transitions. [2018-12-09 15:25:23,593 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-09 15:25:23,594 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 41 states to 41 states and 52 transitions. [2018-12-09 15:25:23,594 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 34 [2018-12-09 15:25:23,594 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-09 15:25:23,594 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 52 transitions. [2018-12-09 15:25:23,594 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,595 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2018-12-09 15:25:23,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 52 transitions. [2018-12-09 15:25:23,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 37. [2018-12-09 15:25:23,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 15:25:23,596 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2018-12-09 15:25:23,597 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-09 15:25:23,597 INFO L608 BuchiCegarLoop]: Abstraction has 37 states and 48 transitions. [2018-12-09 15:25:23,597 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-09 15:25:23,597 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 37 states and 48 transitions. [2018-12-09 15:25:23,597 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-09 15:25:23,597 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:23,597 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:23,598 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:25:23,598 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:23,598 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 [2018-12-09 15:25:23,598 INFO L796 eck$LassoCheckResult]: Loop: 997#L37-5 assume !false; 1004#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 1005#L37-4 assume base2flt_~m % 4294967296 < 16777216; 997#L37-5 [2018-12-09 15:25:23,598 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,598 INFO L82 PathProgramCache]: Analyzing trace with hash -197167406, now seen corresponding path program 1 times [2018-12-09 15:25:23,598 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,599 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,599 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,599 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,618 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:25:23,618 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:25:23,618 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:23,618 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,618 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-12-09 15:25:23,618 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,619 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,619 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,619 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,633 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,633 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,633 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,633 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,633 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:23,633 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,634 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,634 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,634 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-09 15:25:23,634 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,634 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,635 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,642 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,701 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,701 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,702 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,702 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:23,709 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 15:25:23,709 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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,724 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,724 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,740 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:23,740 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:23,755 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:23,756 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,756 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,756 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,756 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,756 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:23,756 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,756 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,756 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,757 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-09 15:25:23,757 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,757 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,757 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,761 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,795 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,795 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:23,796 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,796 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,796 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,796 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,796 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,796 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,797 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,797 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,798 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 15:25:23,799 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:23,799 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:23,799 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:23,799 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:23,799 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:23,799 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:23,800 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:23,800 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:23,801 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:23,802 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:23,803 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:23,803 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:23,803 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:23,803 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:23,803 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-09 15:25:23,803 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:23,817 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,824 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,826 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:23,834 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,835 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 15:25:23,835 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16 Second operand 4 states. [2018-12-09 15:25:23,843 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 37 states and 48 transitions. cyclomatic complexity: 16. Second operand 4 states. Result 55 states and 69 transitions. Complement of second has 5 states. [2018-12-09 15:25:23,844 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:23,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 15:25:23,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2018-12-09 15:25:23,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-09 15:25:23,844 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,844 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 15 letters. Loop has 3 letters. [2018-12-09 15:25:23,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,845 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 12 letters. Loop has 6 letters. [2018-12-09 15:25:23,845 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:23,845 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 55 states and 69 transitions. [2018-12-09 15:25:23,846 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-09 15:25:23,846 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 55 states to 52 states and 65 transitions. [2018-12-09 15:25:23,846 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 40 [2018-12-09 15:25:23,846 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2018-12-09 15:25:23,846 INFO L73 IsDeterministic]: Start isDeterministic. Operand 52 states and 65 transitions. [2018-12-09 15:25:23,846 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,847 INFO L705 BuchiCegarLoop]: Abstraction has 52 states and 65 transitions. [2018-12-09 15:25:23,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states and 65 transitions. [2018-12-09 15:25:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2018-12-09 15:25:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 15:25:23,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 52 transitions. [2018-12-09 15:25:23,848 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 52 transitions. [2018-12-09 15:25:23,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:25:23,849 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:25:23,849 INFO L87 Difference]: Start difference. First operand 40 states and 52 transitions. Second operand 4 states. [2018-12-09 15:25:23,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:23,884 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2018-12-09 15:25:23,884 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:25:23,884 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-12-09 15:25:23,884 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 15:25:23,884 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 43 states and 54 transitions. [2018-12-09 15:25:23,884 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-12-09 15:25:23,884 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2018-12-09 15:25:23,885 INFO L73 IsDeterministic]: Start isDeterministic. Operand 43 states and 54 transitions. [2018-12-09 15:25:23,885 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:23,885 INFO L705 BuchiCegarLoop]: Abstraction has 43 states and 54 transitions. [2018-12-09 15:25:23,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states and 54 transitions. [2018-12-09 15:25:23,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 40. [2018-12-09 15:25:23,885 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2018-12-09 15:25:23,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2018-12-09 15:25:23,886 INFO L728 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-09 15:25:23,886 INFO L608 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2018-12-09 15:25:23,886 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-09 15:25:23,886 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 40 states and 51 transitions. [2018-12-09 15:25:23,886 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-09 15:25:23,886 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:23,886 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:23,886 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:25:23,886 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:23,887 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 [2018-12-09 15:25:23,887 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 [2018-12-09 15:25:23,887 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,887 INFO L82 PathProgramCache]: Analyzing trace with hash 1360904017, now seen corresponding path program 1 times [2018-12-09 15:25:23,887 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,887 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,887 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,887 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:23,916 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:23,917 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-09 15:25:23,917 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2018-12-09 15:25:23,917 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:23,917 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:23,917 INFO L82 PathProgramCache]: Analyzing trace with hash 261296, now seen corresponding path program 1 times [2018-12-09 15:25:23,917 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:23,917 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:23,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,918 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:23,918 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:23,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:23,933 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:23,933 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:23,933 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:23,933 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:23,933 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:23,933 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,933 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:23,933 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:23,933 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-09 15:25:23,933 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:23,933 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:23,934 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,937 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:23,970 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:23,970 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,971 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:23,972 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:23,991 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:23,991 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:24,006 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:24,007 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:24,007 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:24,007 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:24,007 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:24,007 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:24,008 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,008 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:24,008 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:24,008 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration6_Loop [2018-12-09 15:25:24,008 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:24,008 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:24,008 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,012 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,050 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:24,050 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:24,050 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:24,051 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:24,051 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:24,051 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:24,051 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:24,051 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:24,051 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:24,052 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:24,053 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:24,053 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:24,054 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:24,054 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:24,054 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:24,054 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:24,054 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-09 15:25:24,054 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:24,071 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:24,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,078 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:24,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,081 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:24,081 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:24,082 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 1 loop predicates [2018-12-09 15:25:24,082 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16 Second operand 3 states. [2018-12-09 15:25:24,085 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 40 states and 51 transitions. cyclomatic complexity: 16. Second operand 3 states. Result 43 states and 55 transitions. Complement of second has 4 states. [2018-12-09 15:25:24,085 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:24,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-09 15:25:24,085 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 40 transitions. [2018-12-09 15:25:24,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 3 letters. [2018-12-09 15:25:24,085 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,085 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 20 letters. Loop has 3 letters. [2018-12-09 15:25:24,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,086 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 40 transitions. Stem has 17 letters. Loop has 6 letters. [2018-12-09 15:25:24,086 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,086 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 55 transitions. [2018-12-09 15:25:24,086 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 15:25:24,086 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 37 states and 47 transitions. [2018-12-09 15:25:24,086 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 28 [2018-12-09 15:25:24,086 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 28 [2018-12-09 15:25:24,086 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 47 transitions. [2018-12-09 15:25:24,087 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:24,087 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-09 15:25:24,087 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 47 transitions. [2018-12-09 15:25:24,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2018-12-09 15:25:24,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2018-12-09 15:25:24,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 47 transitions. [2018-12-09 15:25:24,088 INFO L728 BuchiCegarLoop]: Abstraction has 37 states and 47 transitions. [2018-12-09 15:25:24,088 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2018-12-09 15:25:24,088 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2018-12-09 15:25:24,088 INFO L87 Difference]: Start difference. First operand 37 states and 47 transitions. Second operand 4 states. [2018-12-09 15:25:24,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:24,117 INFO L93 Difference]: Finished difference Result 45 states and 56 transitions. [2018-12-09 15:25:24,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2018-12-09 15:25:24,118 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 45 states and 56 transitions. [2018-12-09 15:25:24,118 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 15:25:24,118 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 45 states to 45 states and 56 transitions. [2018-12-09 15:25:24,118 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-09 15:25:24,118 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2018-12-09 15:25:24,118 INFO L73 IsDeterministic]: Start isDeterministic. Operand 45 states and 56 transitions. [2018-12-09 15:25:24,118 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-09 15:25:24,118 INFO L705 BuchiCegarLoop]: Abstraction has 45 states and 56 transitions. [2018-12-09 15:25:24,118 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states and 56 transitions. [2018-12-09 15:25:24,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2018-12-09 15:25:24,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2018-12-09 15:25:24,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2018-12-09 15:25:24,119 INFO L728 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-09 15:25:24,119 INFO L608 BuchiCegarLoop]: Abstraction has 39 states and 50 transitions. [2018-12-09 15:25:24,119 INFO L442 BuchiCegarLoop]: ======== Iteration 7============ [2018-12-09 15:25:24,120 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 39 states and 50 transitions. [2018-12-09 15:25:24,120 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-09 15:25:24,120 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-09 15:25:24,120 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-09 15:25:24,120 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-09 15:25:24,120 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-09 15:25:24,121 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 [2018-12-09 15:25:24,121 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 [2018-12-09 15:25:24,121 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:24,121 INFO L82 PathProgramCache]: Analyzing trace with hash -377438794, now seen corresponding path program 1 times [2018-12-09 15:25:24,121 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:24,121 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:24,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:24,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:24,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:24,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,139 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:24,139 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2018-12-09 15:25:24,139 INFO L223 ckRefinementStrategy]: Switched to mode Z3_FP No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with z3 -smt2 -in SMTLIB2_COMPLIANT=true -t:12000 [2018-12-09 15:25:24,146 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:24,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,155 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:24,158 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:24,172 INFO L312 seRefinementStrategy]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2018-12-09 15:25:24,173 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4] total 5 [2018-12-09 15:25:24,173 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-09 15:25:24,173 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:24,173 INFO L82 PathProgramCache]: Analyzing trace with hash 235537, now seen corresponding path program 1 times [2018-12-09 15:25:24,173 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-09 15:25:24,173 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-09 15:25:24,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:24,174 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-09 15:25:24,174 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-09 15:25:24,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:24,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-09 15:25:24,185 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:24,185 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:24,185 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:24,185 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:24,185 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-09 15:25:24,185 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,185 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:24,185 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:24,185 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-09 15:25:24,186 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:24,186 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:24,186 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,189 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,222 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:24,222 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,224 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:24,224 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:24,230 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-09 15:25:24,231 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_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,246 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-09 15:25:24,246 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_cd86999d-d898-496a-a287-23bf5f5de5fa/bin-2019/uautomizer/z3 Starting monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,261 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-09 15:25:24,262 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-09 15:25:24,276 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-09 15:25:24,278 INFO L216 LassoAnalysis]: Preferences: [2018-12-09 15:25:24,278 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-09 15:25:24,278 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-09 15:25:24,278 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-09 15:25:24,278 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-09 15:25:24,278 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-09 15:25:24,278 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-09 15:25:24,278 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-09 15:25:24,279 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_2_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration7_Loop [2018-12-09 15:25:24,279 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-09 15:25:24,279 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-09 15:25:24,279 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,283 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-09 15:25:24,311 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-09 15:25:24,311 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-09 15:25:24,312 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:24,312 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:24,312 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:24,312 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:24,312 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:24,312 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:24,313 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:24,313 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:24,313 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-09 15:25:24,314 INFO L122 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSES Number of strict supporting invariants: 0 Number of non-strict supporting invariants: 1 Consider only non-deceasing supporting invariants: true Simplify termination arguments: true Simplify supporting invariants: trueOverapproximate stem: false [2018-12-09 15:25:24,314 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-09 15:25:24,314 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-09 15:25:24,314 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-09 15:25:24,314 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-09 15:25:24,314 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-09 15:25:24,315 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-09 15:25:24,315 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-09 15:25:24,316 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-09 15:25:24,317 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-09 15:25:24,317 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-09 15:25:24,317 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-09 15:25:24,317 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-09 15:25:24,317 INFO L518 LassoAnalysis]: Proved termination. [2018-12-09 15:25:24,317 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-09 15:25:24,317 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-09 15:25:24,328 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-09 15:25:24,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,337 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:24,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-09 15:25:24,340 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-09 15:25:24,347 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-09 15:25:24,347 INFO L152 lantAutomatonBouncer]: Defining deterministic Buchi interpolant automaton with honda bouncer for stem and without honda bouncer for loop.1 stem predicates 2 loop predicates [2018-12-09 15:25:24,347 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15 Second operand 4 states. [2018-12-09 15:25:24,350 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 39 states and 50 transitions. cyclomatic complexity: 15. Second operand 4 states. Result 43 states and 54 transitions. Complement of second has 4 states. [2018-12-09 15:25:24,351 INFO L142 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2018-12-09 15:25:24,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-09 15:25:24,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 37 transitions. [2018-12-09 15:25:24,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 3 letters. [2018-12-09 15:25:24,351 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,351 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 21 letters. Loop has 3 letters. [2018-12-09 15:25:24,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,352 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 37 transitions. Stem has 18 letters. Loop has 6 letters. [2018-12-09 15:25:24,352 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-09 15:25:24,352 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 43 states and 54 transitions. [2018-12-09 15:25:24,353 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 15:25:24,353 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 43 states to 0 states and 0 transitions. [2018-12-09 15:25:24,353 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 15:25:24,353 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 15:25:24,353 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 15:25:24,353 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 15:25:24,353 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:25:24,353 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:25:24,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2018-12-09 15:25:24,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2018-12-09 15:25:24,354 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand 5 states. [2018-12-09 15:25:24,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-09 15:25:24,354 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2018-12-09 15:25:24,354 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2018-12-09 15:25:24,354 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2018-12-09 15:25:24,354 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 15:25:24,354 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2018-12-09 15:25:24,354 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-09 15:25:24,354 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-09 15:25:24,355 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-09 15:25:24,355 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-09 15:25:24,355 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:25:24,355 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:25:24,355 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-09 15:25:24,355 INFO L442 BuchiCegarLoop]: ======== Iteration 8============ [2018-12-09 15:25:24,355 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-09 15:25:24,355 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-09 15:25:24,355 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-09 15:25:24,360 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 09.12 03:25:24 BoogieIcfgContainer [2018-12-09 15:25:24,360 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-09 15:25:24,361 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-09 15:25:24,361 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-09 15:25:24,361 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-09 15:25:24,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 03:25:22" (3/4) ... [2018-12-09 15:25:24,364 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-09 15:25:24,364 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-09 15:25:24,365 INFO L168 Benchmark]: Toolchain (without parser) took 2682.81 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 216.5 MB). Free memory was 954.9 MB in the beginning and 1.0 GB in the end (delta: -66.1 MB). Peak memory consumption was 150.4 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,366 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:25:24,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 154.89 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 938.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,366 INFO L168 Benchmark]: Boogie Procedure Inliner took 53.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,367 INFO L168 Benchmark]: Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,367 INFO L168 Benchmark]: RCFGBuilder took 285.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,367 INFO L168 Benchmark]: BuchiAutomizer took 2165.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 89.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.0 MB). Peak memory consumption was 153.2 MB. Max. memory is 11.5 GB. [2018-12-09 15:25:24,368 INFO L168 Benchmark]: Witness Printer took 3.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-09 15:25:24,370 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 1.0 GB. Free memory is still 976.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 154.89 ms. Allocated memory is still 1.0 GB. Free memory was 954.9 MB in the beginning and 938.8 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 53.94 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 127.4 MB). Free memory was 938.8 MB in the beginning and 1.1 GB in the end (delta: -182.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 17.07 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 285.88 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.4 MB). Peak memory consumption was 25.4 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 2165.30 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 89.1 MB). Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 64.0 MB). Peak memory consumption was 153.2 MB. Max. memory is 11.5 GB. * Witness Printer took 3.22 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 5 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 2.1s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 1.5s. Construction of modules took 0.1s. Büchi inclusion checks took 0.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.0s AutomataMinimizationTime, 11 MinimizatonAttempts, 95 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 40 states and ocurred in iteration 5. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 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: 8ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 5 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.3s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...