./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_4_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_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/data -tc /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c -s /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 ee05cb2d66f71fb2277986b04bb223cfc634fed1 ........................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.1.23-635dfa2 [2018-12-01 09:58:55,348 INFO L170 SettingsManager]: Resetting all preferences to default values... [2018-12-01 09:58:55,349 INFO L174 SettingsManager]: Resetting UltimateCore preferences to default values [2018-12-01 09:58:55,356 INFO L177 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2018-12-01 09:58:55,356 INFO L174 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2018-12-01 09:58:55,356 INFO L174 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2018-12-01 09:58:55,357 INFO L174 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2018-12-01 09:58:55,358 INFO L174 SettingsManager]: Resetting LassoRanker preferences to default values [2018-12-01 09:58:55,359 INFO L174 SettingsManager]: Resetting Reaching Definitions preferences to default values [2018-12-01 09:58:55,360 INFO L174 SettingsManager]: Resetting SyntaxChecker preferences to default values [2018-12-01 09:58:55,360 INFO L177 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2018-12-01 09:58:55,360 INFO L174 SettingsManager]: Resetting LTL2Aut preferences to default values [2018-12-01 09:58:55,361 INFO L174 SettingsManager]: Resetting PEA to Boogie preferences to default values [2018-12-01 09:58:55,361 INFO L174 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2018-12-01 09:58:55,362 INFO L174 SettingsManager]: Resetting ChcToBoogie preferences to default values [2018-12-01 09:58:55,362 INFO L174 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2018-12-01 09:58:55,363 INFO L174 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2018-12-01 09:58:55,364 INFO L174 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2018-12-01 09:58:55,365 INFO L174 SettingsManager]: Resetting CodeCheck preferences to default values [2018-12-01 09:58:55,366 INFO L174 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2018-12-01 09:58:55,366 INFO L174 SettingsManager]: Resetting RCFGBuilder preferences to default values [2018-12-01 09:58:55,367 INFO L174 SettingsManager]: Resetting TraceAbstraction preferences to default values [2018-12-01 09:58:55,368 INFO L177 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2018-12-01 09:58:55,368 INFO L177 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2018-12-01 09:58:55,368 INFO L174 SettingsManager]: Resetting TreeAutomizer preferences to default values [2018-12-01 09:58:55,369 INFO L174 SettingsManager]: Resetting IcfgTransformer preferences to default values [2018-12-01 09:58:55,369 INFO L174 SettingsManager]: Resetting Boogie Printer preferences to default values [2018-12-01 09:58:55,370 INFO L174 SettingsManager]: Resetting ReqPrinter preferences to default values [2018-12-01 09:58:55,370 INFO L174 SettingsManager]: Resetting Witness Printer preferences to default values [2018-12-01 09:58:55,371 INFO L177 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2018-12-01 09:58:55,371 INFO L174 SettingsManager]: Resetting CDTParser preferences to default values [2018-12-01 09:58:55,371 INFO L177 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2018-12-01 09:58:55,371 INFO L177 SettingsManager]: ReqParser provides no preferences, ignoring... [2018-12-01 09:58:55,372 INFO L174 SettingsManager]: Resetting SmtParser preferences to default values [2018-12-01 09:58:55,372 INFO L174 SettingsManager]: Resetting Witness Parser preferences to default values [2018-12-01 09:58:55,372 INFO L181 SettingsManager]: Finished resetting all preferences to default values... [2018-12-01 09:58:55,373 INFO L98 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/config/svcomp-Termination-32bit-Automizer_Default.epf [2018-12-01 09:58:55,380 INFO L110 SettingsManager]: Loading preferences was successful [2018-12-01 09:58:55,381 INFO L112 SettingsManager]: Preferences different from defaults after loading the file: [2018-12-01 09:58:55,381 INFO L131 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2018-12-01 09:58:55,381 INFO L133 SettingsManager]: * Create parallel compositions if possible=false [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * Use SBE=true [2018-12-01 09:58:55,382 INFO L131 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * Use old map elimination=false [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * Use external solver (rank synthesis)=false [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * Use only trivial implications for array writes=true [2018-12-01 09:58:55,382 INFO L133 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2018-12-01 09:58:55,382 INFO L131 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * sizeof long=4 [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * Overapproximate operations on floating types=true [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * sizeof POINTER=4 [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * Check division by zero=IGNORE [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2018-12-01 09:58:55,383 INFO L133 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * sizeof long double=12 [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * Check if freed pointer was valid=false [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * Assume nondeterminstic values are in range=false [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * Use constant arrays=true [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2018-12-01 09:58:55,384 INFO L131 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * Size of a code block=SequenceOfStatements [2018-12-01 09:58:55,384 INFO L133 SettingsManager]: * To the following directory=/home/matthias/ultimate/dump [2018-12-01 09:58:55,385 INFO L131 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2018-12-01 09:58:55,385 INFO L133 SettingsManager]: * Trace refinement strategy=CAMEL [2018-12-01 09:58:55,385 INFO L133 SettingsManager]: * Dump automata to the following directory=/home/matthias/ultimate/dump/auto [2018-12-01 09:58:55,385 INFO L131 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2018-12-01 09:58:55,385 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_67732ced-bf16-4a98-b6ce-13294819911b/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 -> ee05cb2d66f71fb2277986b04bb223cfc634fed1 [2018-12-01 09:58:55,402 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2018-12-01 09:58:55,409 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2018-12-01 09:58:55,411 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2018-12-01 09:58:55,412 INFO L271 PluginConnector]: Initializing CDTParser... [2018-12-01 09:58:55,412 INFO L276 PluginConnector]: CDTParser initialized [2018-12-01 09:58:55,412 INFO L418 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/../../sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-01 09:58:55,446 INFO L221 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/data/15504eae6/0725d8b9861a46aaab81d13f0c43805b/FLAG270cefc93 [2018-12-01 09:58:55,883 INFO L307 CDTParser]: Found 1 translation units. [2018-12-01 09:58:55,884 INFO L161 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/sv-benchmarks/c/bitvector/soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-01 09:58:55,888 INFO L355 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/data/15504eae6/0725d8b9861a46aaab81d13f0c43805b/FLAG270cefc93 [2018-12-01 09:58:55,896 INFO L363 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/bin-2019/uautomizer/data/15504eae6/0725d8b9861a46aaab81d13f0c43805b [2018-12-01 09:58:55,897 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2018-12-01 09:58:55,898 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2018-12-01 09:58:55,899 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2018-12-01 09:58:55,899 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2018-12-01 09:58:55,901 INFO L276 PluginConnector]: CACSL2BoogieTranslator initialized [2018-12-01 09:58:55,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:58:55" (1/1) ... [2018-12-01 09:58:55,903 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@58f41b83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:55, skipping insertion in model container [2018-12-01 09:58:55,903 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 01.12 09:58:55" (1/1) ... [2018-12-01 09:58:55,909 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2018-12-01 09:58:55,926 INFO L176 MainTranslator]: Built tables and reachable declarations [2018-12-01 09:58:56,035 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 09:58:56,038 INFO L191 MainTranslator]: Completed pre-run [2018-12-01 09:58:56,061 INFO L203 PostProcessor]: Analyzing one entry point: main [2018-12-01 09:58:56,069 INFO L195 MainTranslator]: Completed translation [2018-12-01 09:58:56,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56 WrapperNode [2018-12-01 09:58:56,070 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2018-12-01 09:58:56,070 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2018-12-01 09:58:56,070 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2018-12-01 09:58:56,070 INFO L276 PluginConnector]: Boogie Procedure Inliner initialized [2018-12-01 09:58:56,075 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,079 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,128 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2018-12-01 09:58:56,129 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2018-12-01 09:58:56,129 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2018-12-01 09:58:56,129 INFO L276 PluginConnector]: Boogie Preprocessor initialized [2018-12-01 09:58:56,135 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,137 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,137 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,142 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,148 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,150 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... [2018-12-01 09:58:56,152 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2018-12-01 09:58:56,152 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2018-12-01 09:58:56,152 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2018-12-01 09:58:56,152 INFO L276 PluginConnector]: RCFGBuilder initialized [2018-12-01 09:58:56,153 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:56,190 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2018-12-01 09:58:56,190 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2018-12-01 09:58:56,422 INFO L275 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2018-12-01 09:58:56,422 INFO L280 CfgBuilder]: Removed 30 assue(true) statements. [2018-12-01 09:58:56,423 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:58:56 BoogieIcfgContainer [2018-12-01 09:58:56,423 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2018-12-01 09:58:56,423 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2018-12-01 09:58:56,424 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2018-12-01 09:58:56,427 INFO L276 PluginConnector]: BuchiAutomizer initialized [2018-12-01 09:58:56,427 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 09:58:56,428 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 01.12 09:58:55" (1/3) ... [2018-12-01 09:58:56,429 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@280be23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 09:58:56, skipping insertion in model container [2018-12-01 09:58:56,429 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 09:58:56,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 01.12 09:58:56" (2/3) ... [2018-12-01 09:58:56,429 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@280be23a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 01.12 09:58:56, skipping insertion in model container [2018-12-01 09:58:56,429 INFO L102 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2018-12-01 09:58:56,429 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:58:56" (3/3) ... [2018-12-01 09:58:56,431 INFO L375 chiAutomizerObserver]: Analyzing ICFG soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c [2018-12-01 09:58:56,461 INFO L133 ementStrategyFactory]: Using default assertion order modulation [2018-12-01 09:58:56,462 INFO L374 BuchiCegarLoop]: Interprodecural is true [2018-12-01 09:58:56,462 INFO L375 BuchiCegarLoop]: Hoare is false [2018-12-01 09:58:56,462 INFO L376 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2018-12-01 09:58:56,462 INFO L377 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2018-12-01 09:58:56,462 INFO L378 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2018-12-01 09:58:56,462 INFO L379 BuchiCegarLoop]: Difference is false [2018-12-01 09:58:56,462 INFO L380 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2018-12-01 09:58:56,462 INFO L383 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2018-12-01 09:58:56,471 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2018-12-01 09:58:56,486 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-01 09:58:56,486 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:56,486 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:56,490 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-01 09:58:56,490 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:56,490 INFO L442 BuchiCegarLoop]: ======== Iteration 1============ [2018-12-01 09:58:56,491 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 72 states. [2018-12-01 09:58:56,493 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2018-12-01 09:58:56,493 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:56,493 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:56,494 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1] [2018-12-01 09:58:56,494 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:56,498 INFO L794 eck$LassoCheckResult]: Stem: 32#ULTIMATE.startENTRYtrue havoc main_#res;havoc main_#t~nondet0, main_#t~nondet1, main_#t~nondet2, main_#t~nondet3, main_#t~ret4, main_#t~ret5, main_#t~ret6, main_#t~ret7, main_#t~ret8, main_~a~0, main_~ma~2, main_~ea~2, main_~b~0, main_~mb~2, main_~eb~2, main_~r_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;havoc main_~a~0;main_~ma~2 := main_#t~nondet0;havoc main_#t~nondet0;main_~ea~2 := main_#t~nondet1;havoc main_#t~nondet1;havoc main_~b~0;main_~mb~2 := main_#t~nondet2;havoc main_#t~nondet2;main_~eb~2 := main_#t~nondet3;havoc main_#t~nondet3;havoc main_~r_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;base2flt_#in~m, base2flt_#in~e := 0, 0;havoc base2flt_#res;havoc base2flt_~m, base2flt_~e, base2flt_~res~0, base2flt_~__retres4~0;base2flt_~m := base2flt_#in~m;base2flt_~e := base2flt_#in~e;havoc base2flt_~res~0;havoc base2flt_~__retres4~0; 30#L19true assume !(0 == base2flt_~m % 4294967296); 19#L25true assume !(base2flt_~m % 4294967296 < 16777216); 14#L47-2true [2018-12-01 09:58:56,498 INFO L796 eck$LassoCheckResult]: Loop: 14#L47-2true assume !false; 25#L48true assume base2flt_~m % 4294967296 >= 33554432; 48#L49true assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 14#L47-2true [2018-12-01 09:58:56,501 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:56,502 INFO L82 PathProgramCache]: Analyzing trace with hash 30973, now seen corresponding path program 1 times [2018-12-01 09:58:56,503 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:56,503 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:56,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,530 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:56,530 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:56,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:56,597 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2018-12-01 09:58:56,597 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2018-12-01 09:58:56,601 INFO L799 eck$LassoCheckResult]: stem already infeasible [2018-12-01 09:58:56,601 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:56,601 INFO L82 PathProgramCache]: Analyzing trace with hash 73619, now seen corresponding path program 1 times [2018-12-01 09:58:56,601 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:56,601 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:56,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,602 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:56,602 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:56,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:56,654 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:56,654 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:56,654 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:56,654 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:56,655 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 09:58:56,655 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:56,655 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:56,655 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:56,655 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-01 09:58:56,655 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:56,655 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:56,667 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:56,676 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:56,735 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:56,736 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:56,739 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:56,739 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:56,756 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 09:58:56,757 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:56,774 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 09:58:56,775 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:56,775 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:56,775 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:56,775 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:56,775 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 09:58:56,775 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:56,775 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:56,775 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:56,775 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration1_Loop [2018-12-01 09:58:56,776 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:56,776 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:56,777 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:56,780 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:56,833 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:56,836 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 09:58:56,837 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 [2018-12-01 09:58:56,838 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:56,838 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:56,838 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:56,838 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:56,838 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:56,839 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:56,840 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:56,844 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 09:58:56,847 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 09:58:56,848 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 09:58:56,849 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 09:58:56,849 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 09:58:56,850 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 09:58:56,850 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-01 09:58:56,851 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 09:58:56,864 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:56,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:56,872 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:56,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:56,879 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:56,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:56,889 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 [2018-12-01 09:58:56,890 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 72 states. Second operand 3 states. [2018-12-01 09:58:56,931 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 72 states.. Second operand 3 states. Result 212 states and 334 transitions. Complement of second has 6 states. [2018-12-01 09:58:56,932 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 [2018-12-01 09:58:56,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 09:58:56,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 219 transitions. [2018-12-01 09:58:56,934 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 3 letters. [2018-12-01 09:58:56,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:56,935 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-01 09:58:56,935 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:56,936 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 219 transitions. Stem has 3 letters. Loop has 6 letters. [2018-12-01 09:58:56,936 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:56,936 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 212 states and 334 transitions. [2018-12-01 09:58:56,940 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2018-12-01 09:58:56,944 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 212 states to 56 states and 81 transitions. [2018-12-01 09:58:56,945 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 52 [2018-12-01 09:58:56,945 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 53 [2018-12-01 09:58:56,945 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 81 transitions. [2018-12-01 09:58:56,945 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 09:58:56,946 INFO L705 BuchiCegarLoop]: Abstraction has 56 states and 81 transitions. [2018-12-01 09:58:56,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 81 transitions. [2018-12-01 09:58:56,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 45. [2018-12-01 09:58:56,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2018-12-01 09:58:56,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 69 transitions. [2018-12-01 09:58:56,963 INFO L728 BuchiCegarLoop]: Abstraction has 45 states and 69 transitions. [2018-12-01 09:58:56,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2018-12-01 09:58:56,965 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2018-12-01 09:58:56,965 INFO L87 Difference]: Start difference. First operand 45 states and 69 transitions. Second operand 3 states. [2018-12-01 09:58:56,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2018-12-01 09:58:56,987 INFO L93 Difference]: Finished difference Result 23 states and 30 transitions. [2018-12-01 09:58:56,987 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2018-12-01 09:58:56,988 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 23 states and 30 transitions. [2018-12-01 09:58:56,988 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-01 09:58:56,989 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 23 states to 23 states and 30 transitions. [2018-12-01 09:58:56,989 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 23 [2018-12-01 09:58:56,989 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 23 [2018-12-01 09:58:56,989 INFO L73 IsDeterministic]: Start isDeterministic. Operand 23 states and 30 transitions. [2018-12-01 09:58:56,989 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 09:58:56,989 INFO L705 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-01 09:58:56,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states and 30 transitions. [2018-12-01 09:58:56,990 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2018-12-01 09:58:56,990 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2018-12-01 09:58:56,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 30 transitions. [2018-12-01 09:58:56,990 INFO L728 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-01 09:58:56,991 INFO L608 BuchiCegarLoop]: Abstraction has 23 states and 30 transitions. [2018-12-01 09:58:56,991 INFO L442 BuchiCegarLoop]: ======== Iteration 2============ [2018-12-01 09:58:56,991 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 23 states and 30 transitions. [2018-12-01 09:58:56,991 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-01 09:58:56,991 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:56,991 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:56,991 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-01 09:58:56,992 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:56,992 INFO L794 eck$LassoCheckResult]: Stem: 414#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 412#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 400#L69 base2flt_#res := base2flt_~__retres4~0; 401#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 408#L19-1 assume !(0 == base2flt_~m % 4294967296); 411#L25-1 assume !(base2flt_~m % 4294967296 < 16777216); 405#L47-5 [2018-12-01 09:58:56,992 INFO L796 eck$LassoCheckResult]: Loop: 405#L47-5 assume !false; 395#L48-1 assume base2flt_~m % 4294967296 >= 33554432; 397#L49-1 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 405#L47-5 [2018-12-01 09:58:56,992 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:56,992 INFO L82 PathProgramCache]: Analyzing trace with hash 921737699, now seen corresponding path program 1 times [2018-12-01 09:58:56,992 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:56,992 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,993 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:56,993 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:56,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,002 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,003 INFO L82 PathProgramCache]: Analyzing trace with hash 136178, now seen corresponding path program 1 times [2018-12-01 09:58:57,003 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,003 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,003 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,003 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,009 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1761973968, now seen corresponding path program 1 times [2018-12-01 09:58:57,010 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,010 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,010 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,010 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,038 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,038 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,039 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,039 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,039 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 09:58:57,039 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,039 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,039 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,039 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-01 09:58:57,039 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,039 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,040 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,044 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,091 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,091 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,092 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,092 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,144 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 09:58:57,145 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_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,159 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,159 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,175 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 09:58:57,175 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,192 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 09:58:57,193 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,193 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,193 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,193 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,193 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 09:58:57,193 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,193 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,193 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,193 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration2_Loop [2018-12-01 09:58:57,193 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,193 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,194 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,207 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,269 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,269 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 09:58:57,269 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 [2018-12-01 09:58:57,270 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,270 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,270 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,270 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,270 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,271 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,271 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,275 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 09:58:57,275 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 [2018-12-01 09:58:57,275 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,275 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,276 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,276 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,276 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,276 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,276 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,278 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 09:58:57,280 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 09:58:57,280 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 09:58:57,280 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 09:58:57,280 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 09:58:57,280 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 09:58:57,280 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-01 09:58:57,281 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 09:58:57,289 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,295 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,298 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,298 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:57,298 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 [2018-12-01 09:58:57,299 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11 Second operand 3 states. [2018-12-01 09:58:57,306 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 23 states and 30 transitions. cyclomatic complexity: 11. Second operand 3 states. Result 40 states and 50 transitions. Complement of second has 5 states. [2018-12-01 09:58:57,306 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 [2018-12-01 09:58:57,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 09:58:57,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 32 transitions. [2018-12-01 09:58:57,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-01 09:58:57,306 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,306 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-01 09:58:57,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,307 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 32 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-01 09:58:57,307 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,307 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2018-12-01 09:58:57,307 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2018-12-01 09:58:57,308 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 37 states and 46 transitions. [2018-12-01 09:58:57,308 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 33 [2018-12-01 09:58:57,308 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 34 [2018-12-01 09:58:57,308 INFO L73 IsDeterministic]: Start isDeterministic. Operand 37 states and 46 transitions. [2018-12-01 09:58:57,308 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 09:58:57,308 INFO L705 BuchiCegarLoop]: Abstraction has 37 states and 46 transitions. [2018-12-01 09:58:57,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states and 46 transitions. [2018-12-01 09:58:57,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 26. [2018-12-01 09:58:57,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 09:58:57,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-12-01 09:58:57,309 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-01 09:58:57,310 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-01 09:58:57,310 INFO L442 BuchiCegarLoop]: ======== Iteration 3============ [2018-12-01 09:58:57,310 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-12-01 09:58:57,310 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2018-12-01 09:58:57,310 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:57,310 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:57,310 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1] [2018-12-01 09:58:57,310 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:57,311 INFO L794 eck$LassoCheckResult]: Stem: 526#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 524#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 512#L69 base2flt_#res := base2flt_~__retres4~0; 513#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 520#L19-1 assume !(0 == base2flt_~m % 4294967296); 523#L25-1 assume base2flt_~m % 4294967296 < 16777216; 528#L37-3 [2018-12-01 09:58:57,311 INFO L796 eck$LassoCheckResult]: Loop: 528#L37-3 assume !false; 518#L28-1 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 519#L37-2 assume base2flt_~m % 4294967296 < 16777216; 528#L37-3 [2018-12-01 09:58:57,311 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,311 INFO L82 PathProgramCache]: Analyzing trace with hash 921737673, now seen corresponding path program 1 times [2018-12-01 09:58:57,311 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,311 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,311 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,312 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,312 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,319 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,319 INFO L82 PathProgramCache]: Analyzing trace with hash 110419, now seen corresponding path program 1 times [2018-12-01 09:58:57,319 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,319 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,320 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,320 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,323 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1761173643, now seen corresponding path program 1 times [2018-12-01 09:58:57,323 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,323 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,324 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,324 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,351 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,351 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,351 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,351 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,351 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 09:58:57,351 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,351 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,351 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,351 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-01 09:58:57,351 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,351 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,352 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,356 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,388 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,388 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,390 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,390 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,396 INFO L445 LassoAnalysis]: Proved nontermination for one component. [2018-12-01 09:58:57,396 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_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,411 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,411 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,435 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 09:58:57,435 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,451 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 09:58:57,452 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,452 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,452 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,452 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,452 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 09:58:57,452 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,452 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,452 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,452 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration3_Loop [2018-12-01 09:58:57,452 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,452 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,453 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,457 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,502 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,502 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 09:58:57,503 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 [2018-12-01 09:58:57,503 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,503 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,503 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,503 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,503 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,504 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,504 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,505 INFO L530 LassoAnalysis]: Proving termination failed for this template and these settings. [2018-12-01 09:58:57,506 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 [2018-12-01 09:58:57,506 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,506 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,506 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,506 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,506 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,507 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,507 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,508 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 09:58:57,509 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 09:58:57,510 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 09:58:57,510 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 09:58:57,510 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 09:58:57,510 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 09:58:57,510 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-01 09:58:57,510 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 09:58:57,518 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,524 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,527 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,543 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:57,544 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 [2018-12-01 09:58:57,544 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12 Second operand 4 states. [2018-12-01 09:58:57,551 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 12. Second operand 4 states. Result 44 states and 55 transitions. Complement of second has 5 states. [2018-12-01 09:58:57,552 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 [2018-12-01 09:58:57,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 09:58:57,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 33 transitions. [2018-12-01 09:58:57,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 3 letters. [2018-12-01 09:58:57,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,552 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-01 09:58:57,552 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,553 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 33 transitions. Stem has 6 letters. Loop has 6 letters. [2018-12-01 09:58:57,553 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,553 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 44 states and 55 transitions. [2018-12-01 09:58:57,553 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2018-12-01 09:58:57,554 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 44 states to 41 states and 51 transitions. [2018-12-01 09:58:57,554 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2018-12-01 09:58:57,554 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2018-12-01 09:58:57,554 INFO L73 IsDeterministic]: Start isDeterministic. Operand 41 states and 51 transitions. [2018-12-01 09:58:57,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 09:58:57,554 INFO L705 BuchiCegarLoop]: Abstraction has 41 states and 51 transitions. [2018-12-01 09:58:57,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states and 51 transitions. [2018-12-01 09:58:57,555 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 29. [2018-12-01 09:58:57,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2018-12-01 09:58:57,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 38 transitions. [2018-12-01 09:58:57,556 INFO L728 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-12-01 09:58:57,556 INFO L608 BuchiCegarLoop]: Abstraction has 29 states and 38 transitions. [2018-12-01 09:58:57,556 INFO L442 BuchiCegarLoop]: ======== Iteration 4============ [2018-12-01 09:58:57,556 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 29 states and 38 transitions. [2018-12-01 09:58:57,556 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2018-12-01 09:58:57,556 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:57,556 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:57,557 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 09:58:57,557 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:57,557 INFO L794 eck$LassoCheckResult]: Stem: 646#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 643#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 := 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; 639#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 634#L69-1 base2flt_#res := base2flt_~__retres4~0; 630#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 631#L19-2 assume !(0 == base2flt_~m % 4294967296); 640#L25-2 assume !(base2flt_~m % 4294967296 < 16777216); 627#L47-8 [2018-12-01 09:58:57,557 INFO L796 eck$LassoCheckResult]: Loop: 627#L47-8 assume !false; 641#L48-2 assume base2flt_~m % 4294967296 >= 33554432; 626#L49-2 assume !(base2flt_~e >= 127);base2flt_~e := 1 + base2flt_~e;base2flt_~m := base2flt_~m / 2; 627#L47-8 [2018-12-01 09:58:57,557 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,557 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951196, now seen corresponding path program 1 times [2018-12-01 09:58:57,557 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,557 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,558 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,558 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,566 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,567 INFO L82 PathProgramCache]: Analyzing trace with hash 198737, now seen corresponding path program 1 times [2018-12-01 09:58:57,567 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,567 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,567 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,567 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,573 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,573 INFO L82 PathProgramCache]: Analyzing trace with hash 1766695638, now seen corresponding path program 1 times [2018-12-01 09:58:57,573 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,574 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,574 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,574 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,604 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,604 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,604 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,604 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,605 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 09:58:57,605 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,605 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,605 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,605 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-01 09:58:57,605 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,605 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,605 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,609 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,652 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,652 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,653 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,653 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,669 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 09:58:57,669 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,685 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 09:58:57,685 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,686 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,686 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,686 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,686 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 09:58:57,686 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,686 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,686 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,686 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration4_Loop [2018-12-01 09:58:57,686 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,686 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,687 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,692 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,737 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,737 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 09:58:57,737 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 [2018-12-01 09:58:57,738 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,738 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,738 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,738 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,738 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,739 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,739 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,740 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 09:58:57,741 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 09:58:57,741 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 09:58:57,742 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 09:58:57,742 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 09:58:57,742 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 09:58:57,742 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = -2*ULTIMATE.start_base2flt_~e + 253 Supporting invariants [] [2018-12-01 09:58:57,742 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 09:58:57,752 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,760 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,764 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,764 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:57,764 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 [2018-12-01 09:58:57,764 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13 Second operand 3 states. [2018-12-01 09:58:57,767 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 29 states and 38 transitions. cyclomatic complexity: 13. Second operand 3 states. Result 32 states and 42 transitions. Complement of second has 4 states. [2018-12-01 09:58:57,768 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 [2018-12-01 09:58:57,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2018-12-01 09:58:57,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 30 transitions. [2018-12-01 09:58:57,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-01 09:58:57,768 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,768 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 09:58:57,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,769 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 30 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-01 09:58:57,769 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,769 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 32 states and 42 transitions. [2018-12-01 09:58:57,769 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 09:58:57,769 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 32 states to 26 states and 34 transitions. [2018-12-01 09:58:57,770 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 20 [2018-12-01 09:58:57,770 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 20 [2018-12-01 09:58:57,770 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 34 transitions. [2018-12-01 09:58:57,770 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2018-12-01 09:58:57,770 INFO L705 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-01 09:58:57,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states and 34 transitions. [2018-12-01 09:58:57,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2018-12-01 09:58:57,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2018-12-01 09:58:57,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2018-12-01 09:58:57,771 INFO L728 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-01 09:58:57,771 INFO L608 BuchiCegarLoop]: Abstraction has 26 states and 34 transitions. [2018-12-01 09:58:57,771 INFO L442 BuchiCegarLoop]: ======== Iteration 5============ [2018-12-01 09:58:57,771 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 26 states and 34 transitions. [2018-12-01 09:58:57,771 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2018-12-01 09:58:57,772 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2018-12-01 09:58:57,772 INFO L119 BuchiIsEmpty]: Starting construction of run [2018-12-01 09:58:57,772 INFO L866 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2018-12-01 09:58:57,772 INFO L867 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2018-12-01 09:58:57,772 INFO L794 eck$LassoCheckResult]: Stem: 759#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_add1~0, main_~r_add2~0, main_~zero~0, main_~tmp~2, main_~tmp___0~0, main_~__retres14~0;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_add1~0;havoc main_~r_add2~0;havoc main_~zero~0;havoc main_~tmp~2;havoc main_~tmp___0~0;havoc main_~__retres14~0;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; 756#L19 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 746#L69 base2flt_#res := base2flt_~__retres4~0; 747#L70 main_#t~ret4 := base2flt_#res;main_~zero~0 := main_#t~ret4;havoc main_#t~ret4;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; 753#L19-1 assume 0 == base2flt_~m % 4294967296;base2flt_~__retres4~0 := 0; 748#L69-1 base2flt_#res := base2flt_~__retres4~0; 744#L70-1 main_#t~ret5 := base2flt_#res;main_~a~0 := main_#t~ret5;havoc main_#t~ret5;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; 745#L19-2 assume !(0 == base2flt_~m % 4294967296); 754#L25-2 assume base2flt_~m % 4294967296 < 16777216; 758#L37-5 [2018-12-01 09:58:57,772 INFO L796 eck$LassoCheckResult]: Loop: 758#L37-5 assume !false; 742#L28-2 assume !(base2flt_~e <= -128);base2flt_~e := base2flt_~e - 1;base2flt_~m := 2 * base2flt_~m; 743#L37-4 assume base2flt_~m % 4294967296 < 16777216; 758#L37-5 [2018-12-01 09:58:57,772 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,772 INFO L82 PathProgramCache]: Analyzing trace with hash 1760951170, now seen corresponding path program 1 times [2018-12-01 09:58:57,772 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,772 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,773 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,773 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,781 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,781 INFO L82 PathProgramCache]: Analyzing trace with hash 172978, now seen corresponding path program 1 times [2018-12-01 09:58:57,781 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,781 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,781 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,782 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,782 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,784 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,785 INFO L82 PathProgramCache]: Analyzing trace with hash 1765895313, now seen corresponding path program 1 times [2018-12-01 09:58:57,785 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2018-12-01 09:58:57,785 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2018-12-01 09:58:57,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,785 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2018-12-01 09:58:57,785 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2018-12-01 09:58:57,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2018-12-01 09:58:57,819 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,819 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,819 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,819 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,819 INFO L127 ssoRankerPreferences]: Use exernal solver: true [2018-12-01 09:58:57,819 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,819 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,819 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,819 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-01 09:58:57,820 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,820 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,821 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,824 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,860 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,860 INFO L412 LassoAnalysis]: Checking for nontermination... No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,862 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2018-12-01 09:58:57,862 INFO L163 nArgumentSynthesizer]: Using integer mode. No working directory specified, using /tmp/vcloud-vcloud-master/worker/working_dir_67732ced-bf16-4a98-b6ce-13294819911b/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 [2018-12-01 09:58:57,878 INFO L151 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2018-12-01 09:58:57,878 INFO L163 nArgumentSynthesizer]: Using integer mode. [2018-12-01 09:58:57,894 INFO L452 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2018-12-01 09:58:57,895 INFO L216 LassoAnalysis]: Preferences: [2018-12-01 09:58:57,895 INFO L124 ssoRankerPreferences]: Compute integeral hull: false [2018-12-01 09:58:57,895 INFO L125 ssoRankerPreferences]: Enable LassoPartitioneer: true [2018-12-01 09:58:57,895 INFO L126 ssoRankerPreferences]: Term annotations enabled: false [2018-12-01 09:58:57,896 INFO L127 ssoRankerPreferences]: Use exernal solver: false [2018-12-01 09:58:57,896 INFO L128 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2018-12-01 09:58:57,896 INFO L129 ssoRankerPreferences]: Dump SMT script to file: false [2018-12-01 09:58:57,896 INFO L130 ssoRankerPreferences]: Path of dumped script: [2018-12-01 09:58:57,896 INFO L131 ssoRankerPreferences]: Filename of dumped script: soft_float_4_true-unreach-call_true-no-overflow_true-termination.c.cil.c_Iteration5_Loop [2018-12-01 09:58:57,896 INFO L132 ssoRankerPreferences]: MapElimAlgo: Frank [2018-12-01 09:58:57,896 INFO L282 LassoAnalysis]: Starting lasso preprocessing... [2018-12-01 09:58:57,897 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,901 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2018-12-01 09:58:57,952 INFO L300 LassoAnalysis]: Preprocessing complete. [2018-12-01 09:58:57,952 INFO L497 LassoAnalysis]: Using template 'affine'. [2018-12-01 09:58:57,952 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 [2018-12-01 09:58:57,953 INFO L339 nArgumentSynthesizer]: Template has degree 0. [2018-12-01 09:58:57,953 INFO L352 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2018-12-01 09:58:57,953 INFO L205 nArgumentSynthesizer]: 1 stem disjuncts [2018-12-01 09:58:57,953 INFO L206 nArgumentSynthesizer]: 1 loop disjuncts [2018-12-01 09:58:57,953 INFO L207 nArgumentSynthesizer]: 2 template conjuncts. [2018-12-01 09:58:57,953 INFO L402 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2018-12-01 09:58:57,953 INFO L403 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2018-12-01 09:58:57,955 INFO L421 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2018-12-01 09:58:57,955 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2018-12-01 09:58:57,956 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2018-12-01 09:58:57,956 INFO L437 nArgumentSynthesizer]: Simplifying supporting invariants... [2018-12-01 09:58:57,956 INFO L440 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2018-12-01 09:58:57,956 INFO L518 LassoAnalysis]: Proved termination. [2018-12-01 09:58:57,956 INFO L520 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e) = 2*ULTIMATE.start_base2flt_~e + 255 Supporting invariants [] [2018-12-01 09:58:57,956 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2018-12-01 09:58:57,963 INFO L141 PredicateUnifier]: Initialized classic predicate unifier [2018-12-01 09:58:57,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,969 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2018-12-01 09:58:57,971 INFO L273 TraceCheckSpWp]: Computing forward predicates... [2018-12-01 09:58:57,981 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2018-12-01 09:58:57,982 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 [2018-12-01 09:58:57,982 INFO L72 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11 Second operand 4 states. [2018-12-01 09:58:57,985 INFO L76 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 26 states and 34 transitions. cyclomatic complexity: 11. Second operand 4 states. Result 30 states and 38 transitions. Complement of second has 4 states. [2018-12-01 09:58:57,985 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 [2018-12-01 09:58:57,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2018-12-01 09:58:57,985 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 27 transitions. [2018-12-01 09:58:57,985 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 3 letters. [2018-12-01 09:58:57,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 12 letters. Loop has 3 letters. [2018-12-01 09:58:57,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,986 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 27 transitions. Stem has 9 letters. Loop has 6 letters. [2018-12-01 09:58:57,986 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2018-12-01 09:58:57,986 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 30 states and 38 transitions. [2018-12-01 09:58:57,986 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 09:58:57,986 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 30 states to 0 states and 0 transitions. [2018-12-01 09:58:57,986 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2018-12-01 09:58:57,987 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2018-12-01 09:58:57,987 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2018-12-01 09:58:57,987 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2018-12-01 09:58:57,987 INFO L705 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 09:58:57,987 INFO L728 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 09:58:57,987 INFO L608 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2018-12-01 09:58:57,987 INFO L442 BuchiCegarLoop]: ======== Iteration 6============ [2018-12-01 09:58:57,987 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2018-12-01 09:58:57,987 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2018-12-01 09:58:57,987 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2018-12-01 09:58:57,992 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 01.12 09:58:57 BoogieIcfgContainer [2018-12-01 09:58:57,992 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2018-12-01 09:58:57,993 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2018-12-01 09:58:57,993 INFO L271 PluginConnector]: Initializing Witness Printer... [2018-12-01 09:58:57,993 INFO L276 PluginConnector]: Witness Printer initialized [2018-12-01 09:58:57,993 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 01.12 09:58:56" (3/4) ... [2018-12-01 09:58:57,996 INFO L147 WitnessPrinter]: No result that supports witness generation found [2018-12-01 09:58:57,996 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2018-12-01 09:58:57,997 INFO L168 Benchmark]: Toolchain (without parser) took 2099.08 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 211.8 MB). Free memory was 960.3 MB in the beginning and 1.2 GB in the end (delta: -226.4 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 09:58:57,998 INFO L168 Benchmark]: CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 09:58:57,998 INFO L168 Benchmark]: CACSL2BoogieTranslator took 171.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 944.2 MB in the end (delta: 16.1 MB). Peak memory consumption was 16.1 MB. Max. memory is 11.5 GB. [2018-12-01 09:58:57,999 INFO L168 Benchmark]: Boogie Procedure Inliner took 58.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. [2018-12-01 09:58:57,999 INFO L168 Benchmark]: Boogie Preprocessor took 23.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. [2018-12-01 09:58:58,000 INFO L168 Benchmark]: RCFGBuilder took 270.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. [2018-12-01 09:58:58,000 INFO L168 Benchmark]: BuchiAutomizer took 1568.88 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 92.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -108.2 MB). There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 09:58:58,001 INFO L168 Benchmark]: Witness Printer took 3.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 GB. There was no memory consumed. Max. memory is 11.5 GB. [2018-12-01 09:58:58,003 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10 ms. Allocated memory is still 1.0 GB. Free memory is still 982.3 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 171.11 ms. Allocated memory is still 1.0 GB. Free memory was 960.3 MB in the beginning and 944.2 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 58.20 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 119.5 MB). Free memory was 944.2 MB in the beginning and 1.1 GB in the end (delta: -170.2 MB). Peak memory consumption was 13.0 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 23.22 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 11.5 GB. * RCFGBuilder took 270.96 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 25.5 MB). Peak memory consumption was 25.5 MB. Max. memory is 11.5 GB. * BuchiAutomizer took 1568.88 ms. Allocated memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: 92.3 MB). Free memory was 1.1 GB in the beginning and 1.2 GB in the end (delta: -108.2 MB). There was no memory consumed. Max. memory is 11.5 GB. * Witness Printer took 3.63 ms. Allocated memory is still 1.2 GB. Free memory is still 1.2 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 6 terminating modules (1 trivial, 5 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. 1 modules have a trivial ranking function, the largest among these consists of 3 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 1.5s and 6 iterations. TraceHistogramMax:1. Analysis of lassos took 1.2s. Construction of modules took 0.0s. Büchi inclusion checks took 0.1s. Highest rank in rank-based complementation 3. Minimization of det autom 2. Minimization of nondet autom 4. Automata minimization 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 34 StatesRemovedByMinimization, 3 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 29 states and ocurred in iteration 3. Nontrivial modules had stage [5, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 247 SDtfs, 215 SDslu, 26 SDs, 0 SdLazy, 38 SolverSat, 6 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT4 conc0 concLT0 SILN0 SILU0 SILI0 SILT1 lasso0 LassoPreprocessingBenchmarks: Lassos: inital21 mio100 ax100 hnf95 lsp57 ukn100 mio100 lsp100 div605 bol100 ite100 ukn100 eq131 hnf43 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: sat Degree: 0 Time: 13ms VariablesStem: 0 VariablesLoop: 2 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 5 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 0.2s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! Received shutdown request...