./Ultimate.py --spec ../../sv-benchmarks/c/properties/termination.prp --file ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for termination Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/config/AutomizerTermination.xml -i ../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y --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 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-13 17:47:49,279 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-13 17:47:49,281 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-13 17:47:49,315 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-13 17:47:49,316 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-13 17:47:49,317 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-13 17:47:49,319 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-13 17:47:49,322 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-13 17:47:49,324 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-13 17:47:49,325 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-13 17:47:49,327 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-13 17:47:49,328 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-13 17:47:49,329 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-13 17:47:49,331 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-13 17:47:49,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-13 17:47:49,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-13 17:47:49,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-13 17:47:49,337 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-13 17:47:49,340 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-13 17:47:49,343 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-13 17:47:49,359 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-13 17:47:49,361 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-13 17:47:49,363 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-13 17:47:49,364 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-13 17:47:49,368 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-13 17:47:49,368 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-13 17:47:49,369 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-13 17:47:49,370 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-13 17:47:49,371 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-13 17:47:49,372 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-13 17:47:49,372 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-13 17:47:49,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-13 17:47:49,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-13 17:47:49,382 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-13 17:47:49,386 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-13 17:47:49,386 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-13 17:47:49,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-13 17:47:49,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-13 17:47:49,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-13 17:47:49,389 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-13 17:47:49,390 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-13 17:47:49,390 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/config/svcomp-Termination-32bit-Automizer_Default.epf [2021-11-13 17:47:49,445 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-13 17:47:49,445 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-13 17:47:49,446 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-13 17:47:49,446 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-13 17:47:49,447 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-13 17:47:49,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-13 17:47:49,447 INFO L138 SettingsManager]: * Use SBE=true [2021-11-13 17:47:49,448 INFO L136 SettingsManager]: Preferences of BuchiAutomizer differ from their defaults: [2021-11-13 17:47:49,448 INFO L138 SettingsManager]: * NCSB implementation=INTSET_LAZY3 [2021-11-13 17:47:49,448 INFO L138 SettingsManager]: * Use old map elimination=false [2021-11-13 17:47:49,448 INFO L138 SettingsManager]: * Use external solver (rank synthesis)=false [2021-11-13 17:47:49,448 INFO L138 SettingsManager]: * Use only trivial implications for array writes=true [2021-11-13 17:47:49,448 INFO L138 SettingsManager]: * Rank analysis=LINEAR_WITH_GUESSES [2021-11-13 17:47:49,449 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-13 17:47:49,449 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-13 17:47:49,449 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-13 17:47:49,449 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-13 17:47:49,449 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-13 17:47:49,449 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-13 17:47:49,450 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=ASSUME [2021-11-13 17:47:49,450 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=ASSUME [2021-11-13 17:47:49,450 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=ASSUME [2021-11-13 17:47:49,450 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-13 17:47:49,450 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-13 17:47:49,451 INFO L138 SettingsManager]: * Assume nondeterminstic values are in range=false [2021-11-13 17:47:49,451 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-13 17:47:49,451 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=ASSUME [2021-11-13 17:47:49,456 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-13 17:47:49,457 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-13 17:47:49,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-13 17:47:49,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-13 17:47:49,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-13 17:47:49,459 INFO L136 SettingsManager]: Preferences of IcfgTransformer differ from their defaults: [2021-11-13 17:47:49,459 INFO L138 SettingsManager]: * TransformationType=MODULO_NEIGHBOR WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(F end) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 95f89ee6bcff8f17eb3e93b344abecdfb8ddea0894d1b25afafccf6235d7ced6 [2021-11-13 17:47:49,725 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-13 17:47:49,748 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-13 17:47:49,751 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-13 17:47:49,752 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-13 17:47:49,753 INFO L275 PluginConnector]: CDTParser initialized [2021-11-13 17:47:49,754 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/../../sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2021-11-13 17:47:49,828 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/data/772e3617c/3604909965434081bdfe5539b2d4fb59/FLAGf4ae0b563 [2021-11-13 17:47:50,440 INFO L306 CDTParser]: Found 1 translation units. [2021-11-13 17:47:50,441 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c [2021-11-13 17:47:50,452 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/data/772e3617c/3604909965434081bdfe5539b2d4fb59/FLAGf4ae0b563 [2021-11-13 17:47:50,748 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/data/772e3617c/3604909965434081bdfe5539b2d4fb59 [2021-11-13 17:47:50,751 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-13 17:47:50,753 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-13 17:47:50,759 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:50,759 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-13 17:47:50,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-13 17:47:50,772 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:50" (1/1) ... [2021-11-13 17:47:50,774 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@31dfffdb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:50, skipping insertion in model container [2021-11-13 17:47:50,777 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 05:47:50" (1/1) ... [2021-11-13 17:47:50,785 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-13 17:47:50,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-13 17:47:51,001 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2021-11-13 17:47:51,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:51,066 INFO L203 MainTranslator]: Completed pre-run [2021-11-13 17:47:51,078 WARN L228 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/sv-benchmarks/c/bitvector/soft_float_3a.c.cil.c[728,741] [2021-11-13 17:47:51,113 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-13 17:47:51,130 INFO L208 MainTranslator]: Completed translation [2021-11-13 17:47:51,131 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51 WrapperNode [2021-11-13 17:47:51,131 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-13 17:47:51,132 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-13 17:47:51,132 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-13 17:47:51,133 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-13 17:47:51,142 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,153 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,193 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-13 17:47:51,194 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-13 17:47:51,194 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-13 17:47:51,194 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-13 17:47:51,204 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,204 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,209 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,209 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,219 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,238 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,241 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,245 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-13 17:47:51,247 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-13 17:47:51,247 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-13 17:47:51,263 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-13 17:47:51,264 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (1/1) ... [2021-11-13 17:47:51,273 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:51,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:51,301 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:51,321 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Waiting until timeout for monitored process [2021-11-13 17:47:51,362 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-13 17:47:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-13 17:47:51,363 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-13 17:47:51,363 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-13 17:47:51,996 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-13 17:47:51,996 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2021-11-13 17:47:51,999 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:47:51 BoogieIcfgContainer [2021-11-13 17:47:52,002 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-13 17:47:52,003 INFO L113 PluginConnector]: ------------------------BuchiAutomizer---------------------------- [2021-11-13 17:47:52,004 INFO L271 PluginConnector]: Initializing BuchiAutomizer... [2021-11-13 17:47:52,011 INFO L275 PluginConnector]: BuchiAutomizer initialized [2021-11-13 17:47:52,012 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 17:47:52,012 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "CDTParser AST 13.11 05:47:50" (1/3) ... [2021-11-13 17:47:52,015 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfe795b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 05:47:52, skipping insertion in model container [2021-11-13 17:47:52,015 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 17:47:52,015 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 05:47:51" (2/3) ... [2021-11-13 17:47:52,015 INFO L205 PluginConnector]: Invalid model from BuchiAutomizer for observer de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer.BuchiAutomizerObserver@2bfe795b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer AST 13.11 05:47:52, skipping insertion in model container [2021-11-13 17:47:52,016 INFO L99 BuchiAutomizer]: Safety of program was proven or not checked, starting termination analysis [2021-11-13 17:47:52,016 INFO L185 PluginConnector]: Executing the observer BuchiAutomizerObserver from plugin BuchiAutomizer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:47:51" (3/3) ... [2021-11-13 17:47:52,018 INFO L388 chiAutomizerObserver]: Analyzing ICFG soft_float_3a.c.cil.c [2021-11-13 17:47:52,093 INFO L359 BuchiCegarLoop]: Interprodecural is true [2021-11-13 17:47:52,093 INFO L360 BuchiCegarLoop]: Hoare is false [2021-11-13 17:47:52,093 INFO L361 BuchiCegarLoop]: Compute interpolants for ForwardPredicates [2021-11-13 17:47:52,093 INFO L362 BuchiCegarLoop]: Backedges is STRAIGHT_LINE [2021-11-13 17:47:52,093 INFO L363 BuchiCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-11-13 17:47:52,093 INFO L364 BuchiCegarLoop]: Difference is false [2021-11-13 17:47:52,094 INFO L365 BuchiCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-11-13 17:47:52,094 INFO L368 BuchiCegarLoop]: ======== Iteration 0==of CEGAR loop == BuchiCegarLoop======== [2021-11-13 17:47:52,122 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:52,172 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-13 17:47:52,172 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:52,173 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:52,180 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-13 17:47:52,180 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:52,180 INFO L425 BuchiCegarLoop]: ======== Iteration 1============ [2021-11-13 17:47:52,182 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:52,199 INFO L131 ngComponentsAnalysis]: Automaton has 8 accepting balls. 24 [2021-11-13 17:47:52,200 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:52,200 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:52,201 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1] [2021-11-13 17:47:52,201 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:52,210 INFO L791 eck$LassoCheckResult]: Stem: 55#ULTIMATE.startENTRYtrue assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 42#L-1true assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 21#L29true assume !(0 == base2flt_~m#1 % 4294967296); 53#L35true assume !(base2flt_~m#1 % 4294967296 < 16777216); 61#L57-2true [2021-11-13 17:47:52,210 INFO L793 eck$LassoCheckResult]: Loop: 61#L57-2true assume !false; 39#L58true assume base2flt_~m#1 % 4294967296 >= 33554432; 36#L59true assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 61#L57-2true [2021-11-13 17:47:52,216 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:52,216 INFO L85 PathProgramCache]: Analyzing trace with hash 925696, now seen corresponding path program 1 times [2021-11-13 17:47:52,228 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:52,229 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [338518407] [2021-11-13 17:47:52,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:52,232 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:52,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:52,531 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:52,532 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:52,533 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [338518407] [2021-11-13 17:47:52,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [338518407] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:52,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:52,536 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:47:52,538 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2110557389] [2021-11-13 17:47:52,539 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:52,547 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:52,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:52,551 INFO L85 PathProgramCache]: Analyzing trace with hash 74612, now seen corresponding path program 1 times [2021-11-13 17:47:52,551 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:52,551 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1325436566] [2021-11-13 17:47:52,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:52,553 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:52,579 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:52,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:52,607 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:52,685 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:52,685 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:52,685 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:52,685 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:52,686 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:52,686 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:52,686 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:52,686 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:52,686 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2021-11-13 17:47:52,686 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:52,687 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:52,727 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:52,739 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:52,873 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:52,874 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:52,877 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:52,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:52,883 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:52,890 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:52,890 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:52,903 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Waiting until timeout for monitored process [2021-11-13 17:47:52,963 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 17:47:52,964 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 17:47:52,968 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (2)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:52,968 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:52,969 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:52,971 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:52,976 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Waiting until timeout for monitored process [2021-11-13 17:47:52,979 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:52,979 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:53,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (3)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:53,028 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:53,028 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:53,037 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:53,038 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Waiting until timeout for monitored process [2021-11-13 17:47:53,039 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:53,039 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:53,081 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:53,089 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (4)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:53,089 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:53,089 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:53,089 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:53,090 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:53,090 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:53,090 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:53,090 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:53,090 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:53,090 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration1_Loop [2021-11-13 17:47:53,091 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:53,091 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:53,092 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:53,126 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:53,231 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:53,238 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:53,239 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:53,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:53,241 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:53,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Waiting until timeout for monitored process [2021-11-13 17:47:53,265 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:53,277 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:53,277 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:53,277 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:53,278 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:53,278 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:53,282 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:53,282 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:53,289 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 17:47:53,312 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (5)] Ended with exit code 0 [2021-11-13 17:47:53,313 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:53,313 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:53,315 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:53,317 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Waiting until timeout for monitored process [2021-11-13 17:47:53,318 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:53,327 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:53,327 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:53,328 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:53,328 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:53,328 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:53,330 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:53,331 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:53,363 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:53,367 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:53,367 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:53,369 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:53,369 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:53,374 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:53,400 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:53,400 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:53,400 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:53,401 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Waiting until timeout for monitored process [2021-11-13 17:47:53,401 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-13 17:47:53,425 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (6)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:53,427 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:53,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:53,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:53,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:53,510 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:53,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:53,536 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:53,537 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:53,570 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:53,627 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 [2021-11-13 17:47:53,629 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:53,799 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand has 71 states, 70 states have (on average 1.7571428571428571) internal successors, (123), 70 states have internal predecessors, (123), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0). Second operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 204 states and 344 transitions. Complement of second has 6 states. [2021-11-13 17:47:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 4 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:53,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 2.3333333333333335) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:53,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 228 transitions. [2021-11-13 17:47:53,815 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 4 letters. Loop has 3 letters. [2021-11-13 17:47:53,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:53,816 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-13 17:47:53,816 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:53,817 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 4 states and 228 transitions. Stem has 4 letters. Loop has 6 letters. [2021-11-13 17:47:53,817 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:53,818 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 204 states and 344 transitions. [2021-11-13 17:47:53,830 INFO L131 ngComponentsAnalysis]: Automaton has 13 accepting balls. 39 [2021-11-13 17:47:53,837 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 204 states to 79 states and 120 transitions. [2021-11-13 17:47:53,839 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 75 [2021-11-13 17:47:53,840 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 76 [2021-11-13 17:47:53,841 INFO L73 IsDeterministic]: Start isDeterministic. Operand 79 states and 120 transitions. [2021-11-13 17:47:53,841 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:53,841 INFO L681 BuchiCegarLoop]: Abstraction has 79 states and 120 transitions. [2021-11-13 17:47:53,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states and 120 transitions. [2021-11-13 17:47:53,880 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 68. [2021-11-13 17:47:53,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 68 states have (on average 1.588235294117647) internal successors, (108), 67 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:53,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 108 transitions. [2021-11-13 17:47:53,891 INFO L704 BuchiCegarLoop]: Abstraction has 68 states and 108 transitions. [2021-11-13 17:47:53,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:53,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:47:53,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:53,896 INFO L87 Difference]: Start difference. First operand 68 states and 108 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:53,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:53,992 INFO L93 Difference]: Finished difference Result 35 states and 48 transitions. [2021-11-13 17:47:53,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:53,994 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 35 states and 48 transitions. [2021-11-13 17:47:53,998 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-13 17:47:53,999 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 35 states to 35 states and 48 transitions. [2021-11-13 17:47:54,000 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 35 [2021-11-13 17:47:54,001 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 35 [2021-11-13 17:47:54,001 INFO L73 IsDeterministic]: Start isDeterministic. Operand 35 states and 48 transitions. [2021-11-13 17:47:54,001 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:47:54,001 INFO L681 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-13 17:47:54,002 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states and 48 transitions. [2021-11-13 17:47:54,014 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-13 17:47:54,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.3714285714285714) internal successors, (48), 34 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 48 transitions. [2021-11-13 17:47:54,018 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-13 17:47:54,018 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 48 transitions. [2021-11-13 17:47:54,018 INFO L425 BuchiCegarLoop]: ======== Iteration 2============ [2021-11-13 17:47:54,018 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 48 transitions. [2021-11-13 17:47:54,021 INFO L131 ngComponentsAnalysis]: Automaton has 6 accepting balls. 18 [2021-11-13 17:47:54,021 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:54,022 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:54,022 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:54,022 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:54,023 INFO L791 eck$LassoCheckResult]: Stem: 452#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 426#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 427#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 455#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 431#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 432#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 433#L35-1 assume !(base2flt_~m#1 % 4294967296 < 16777216); 434#L57-5 [2021-11-13 17:47:54,023 INFO L793 eck$LassoCheckResult]: Loop: 434#L57-5 assume !false; 436#L58-1 assume base2flt_~m#1 % 4294967296 >= 33554432; 437#L59-1 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 434#L57-5 [2021-11-13 17:47:54,024 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,024 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627809, now seen corresponding path program 1 times [2021-11-13 17:47:54,024 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:54,024 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1629567374] [2021-11-13 17:47:54,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:54,025 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:54,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:54,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:54,109 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:54,110 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1629567374] [2021-11-13 17:47:54,110 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1629567374] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:54,110 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:54,110 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-13 17:47:54,111 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293575924] [2021-11-13 17:47:54,111 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:54,111 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:54,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,112 INFO L85 PathProgramCache]: Analyzing trace with hash 137171, now seen corresponding path program 1 times [2021-11-13 17:47:54,112 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:54,112 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1692759266] [2021-11-13 17:47:54,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:54,113 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:54,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:54,121 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:54,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:54,130 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:54,169 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:54,169 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:54,169 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:54,169 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:54,169 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:54,169 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,169 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:54,170 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:54,170 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2021-11-13 17:47:54,170 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:54,170 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:54,171 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:54,178 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:54,317 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:54,318 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:54,318 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,318 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:54,324 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,333 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:54,333 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:54,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Waiting until timeout for monitored process [2021-11-13 17:47:54,401 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (8)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:54,401 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,401 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:54,403 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,410 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:54,410 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:54,447 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Waiting until timeout for monitored process [2021-11-13 17:47:54,496 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:54,504 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (9)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:54,504 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:54,505 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:54,505 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:54,505 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:54,505 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:54,505 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,505 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:54,505 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:54,505 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration2_Loop [2021-11-13 17:47:54,506 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:54,506 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:54,507 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:54,516 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:54,624 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:54,624 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:54,624 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,624 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:54,626 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,633 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:54,644 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:54,645 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:54,645 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:54,645 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:54,645 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:54,648 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:54,648 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:54,651 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Waiting until timeout for monitored process [2021-11-13 17:47:54,661 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:54,670 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:54,670 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:54,670 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:54,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:54,673 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:54,680 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:54,680 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:54,680 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:54,680 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-13 17:47:54,707 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Waiting until timeout for monitored process [2021-11-13 17:47:54,724 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (10)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:54,725 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:54,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:54,770 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:54,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:54,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:54,815 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:54,816 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:54,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:54,874 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 [2021-11-13 17:47:54,874 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19 Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,891 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 48 transitions. cyclomatic complexity: 19. Second operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 63 states and 85 transitions. Complement of second has 5 states. [2021-11-13 17:47:54,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:54,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 3.3333333333333335) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 50 transitions. [2021-11-13 17:47:54,893 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-13 17:47:54,893 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:54,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-13 17:47:54,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:54,894 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 50 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-13 17:47:54,894 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:54,895 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 63 states and 85 transitions. [2021-11-13 17:47:54,896 INFO L131 ngComponentsAnalysis]: Automaton has 9 accepting balls. 27 [2021-11-13 17:47:54,897 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 63 states to 60 states and 81 transitions. [2021-11-13 17:47:54,897 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 56 [2021-11-13 17:47:54,898 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 57 [2021-11-13 17:47:54,898 INFO L73 IsDeterministic]: Start isDeterministic. Operand 60 states and 81 transitions. [2021-11-13 17:47:54,898 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:54,898 INFO L681 BuchiCegarLoop]: Abstraction has 60 states and 81 transitions. [2021-11-13 17:47:54,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states and 81 transitions. [2021-11-13 17:47:54,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 38. [2021-11-13 17:47:54,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.368421052631579) internal successors, (52), 37 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 52 transitions. [2021-11-13 17:47:54,902 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 52 transitions. [2021-11-13 17:47:54,902 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:54,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:47:54,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:54,903 INFO L87 Difference]: Start difference. First operand 38 states and 52 transitions. Second operand has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 states have internal predecessors, (7), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,961 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:54,961 INFO L93 Difference]: Finished difference Result 36 states and 46 transitions. [2021-11-13 17:47:54,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:54,963 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 36 states and 46 transitions. [2021-11-13 17:47:54,964 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-13 17:47:54,964 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 36 states to 36 states and 46 transitions. [2021-11-13 17:47:54,965 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-13 17:47:54,965 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-13 17:47:54,965 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-13 17:47:54,966 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:47:54,966 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-13 17:47:54,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-13 17:47:54,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 32. [2021-11-13 17:47:54,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 32 states have (on average 1.28125) internal successors, (41), 31 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:54,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 41 transitions. [2021-11-13 17:47:54,969 INFO L704 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-13 17:47:54,969 INFO L587 BuchiCegarLoop]: Abstraction has 32 states and 41 transitions. [2021-11-13 17:47:54,969 INFO L425 BuchiCegarLoop]: ======== Iteration 3============ [2021-11-13 17:47:54,969 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 32 states and 41 transitions. [2021-11-13 17:47:54,970 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-13 17:47:54,970 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:54,970 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:54,971 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:54,971 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:54,971 INFO L791 eck$LassoCheckResult]: Stem: 670#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 647#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 648#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 673#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 652#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 653#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 654#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 655#L47-3 [2021-11-13 17:47:54,972 INFO L793 eck$LassoCheckResult]: Loop: 655#L47-3 assume !false; 671#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 664#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 655#L47-3 [2021-11-13 17:47:54,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:54,972 INFO L85 PathProgramCache]: Analyzing trace with hash 1806627783, now seen corresponding path program 1 times [2021-11-13 17:47:54,972 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:54,973 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [7925729] [2021-11-13 17:47:54,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:54,973 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:54,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:54,989 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:54,994 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (11)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,019 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:55,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,020 INFO L85 PathProgramCache]: Analyzing trace with hash 111412, now seen corresponding path program 1 times [2021-11-13 17:47:55,020 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:55,020 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230611270] [2021-11-13 17:47:55,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:55,021 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:55,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,025 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:55,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,030 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:55,031 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,031 INFO L85 PathProgramCache]: Analyzing trace with hash 1013178798, now seen corresponding path program 1 times [2021-11-13 17:47:55,032 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:55,032 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603479870] [2021-11-13 17:47:55,032 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:55,032 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:55,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,070 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:55,081 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (7)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,092 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:55,129 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:55,129 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:55,129 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:55,129 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:55,129 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:55,130 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,130 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:55,130 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:55,130 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2021-11-13 17:47:55,130 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:55,130 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:55,136 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,143 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,213 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:55,214 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:55,219 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:55,228 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,234 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:55,234 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:55,246 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Waiting until timeout for monitored process [2021-11-13 17:47:55,292 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (12)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,292 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,293 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:55,293 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,294 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Waiting until timeout for monitored process [2021-11-13 17:47:55,298 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:55,298 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:55,347 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:55,352 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (13)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,352 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:55,352 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:55,352 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:55,352 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:55,352 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:55,352 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,352 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:55,352 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:55,353 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration3_Loop [2021-11-13 17:47:55,353 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:55,353 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:55,354 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,364 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,445 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:55,445 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:55,445 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,445 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:55,452 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,458 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:55,468 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:55,468 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:55,468 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:55,468 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:55,469 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:55,470 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:55,470 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:55,473 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Waiting until timeout for monitored process [2021-11-13 17:47:55,483 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:55,486 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:55,486 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:55,486 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,487 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:55,488 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,493 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:55,494 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:55,494 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:55,494 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-13 17:47:55,515 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Waiting until timeout for monitored process [2021-11-13 17:47:55,534 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (14)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:55,534 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:55,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:55,569 INFO L263 TraceCheckSpWp]: Trace formula consists of 57 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:55,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:55,617 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:55,617 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:55,690 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:55,691 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 [2021-11-13 17:47:55,691 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14 Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:55,704 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 32 states and 41 transitions. cyclomatic complexity: 14. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 39 states and 50 transitions. Complement of second has 5 states. [2021-11-13 17:47:55,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:55,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:55,706 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 15 transitions. [2021-11-13 17:47:55,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 3 letters. [2021-11-13 17:47:55,706 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:55,706 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 10 letters. Loop has 3 letters. [2021-11-13 17:47:55,707 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:55,707 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 15 transitions. Stem has 7 letters. Loop has 6 letters. [2021-11-13 17:47:55,711 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:55,712 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 39 states and 50 transitions. [2021-11-13 17:47:55,714 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-13 17:47:55,715 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 39 states to 36 states and 46 transitions. [2021-11-13 17:47:55,715 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 30 [2021-11-13 17:47:55,718 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 33 [2021-11-13 17:47:55,718 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 46 transitions. [2021-11-13 17:47:55,718 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:55,718 INFO L681 BuchiCegarLoop]: Abstraction has 36 states and 46 transitions. [2021-11-13 17:47:55,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states and 46 transitions. [2021-11-13 17:47:55,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 35. [2021-11-13 17:47:55,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 35 states have (on average 1.2857142857142858) internal successors, (45), 34 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:55,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 45 transitions. [2021-11-13 17:47:55,725 INFO L704 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-13 17:47:55,725 INFO L587 BuchiCegarLoop]: Abstraction has 35 states and 45 transitions. [2021-11-13 17:47:55,725 INFO L425 BuchiCegarLoop]: ======== Iteration 4============ [2021-11-13 17:47:55,725 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 35 states and 45 transitions. [2021-11-13 17:47:55,725 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-13 17:47:55,726 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:55,726 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:55,726 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:55,726 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:55,727 INFO L791 eck$LassoCheckResult]: Stem: 794#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 769#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 770#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 798#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 774#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 775#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 776#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 777#L47-3 assume !false; 795#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 781#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 788#L80-1 main_#t~ret12#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret12#1;havoc main_#t~ret12#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 792#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 789#L35-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 790#L57-8 [2021-11-13 17:47:55,727 INFO L793 eck$LassoCheckResult]: Loop: 790#L57-8 assume !false; 782#L58-2 assume base2flt_~m#1 % 4294967296 >= 33554432; 784#L59-2 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 790#L57-8 [2021-11-13 17:47:55,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1421262134, now seen corresponding path program 1 times [2021-11-13 17:47:55,728 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:55,728 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [987375675] [2021-11-13 17:47:55,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:55,728 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:55,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:55,790 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:55,790 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:55,790 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [987375675] [2021-11-13 17:47:55,795 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [987375675] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:55,795 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:55,795 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-11-13 17:47:55,795 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1104040420] [2021-11-13 17:47:55,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:55,796 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:55,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:55,797 INFO L85 PathProgramCache]: Analyzing trace with hash 199730, now seen corresponding path program 1 times [2021-11-13 17:47:55,797 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:55,797 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1722907440] [2021-11-13 17:47:55,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:55,797 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:55,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,812 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:55,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:55,819 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:55,859 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:55,859 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:55,859 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:55,859 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:55,859 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:55,860 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,860 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:55,860 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:55,860 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2021-11-13 17:47:55,860 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:55,860 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:55,861 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,878 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:55,958 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:55,958 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:55,959 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:55,959 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:55,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:55,966 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:55,966 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Waiting until timeout for monitored process [2021-11-13 17:47:56,028 INFO L437 LassoAnalysis]: Proved nontermination for one component. [2021-11-13 17:47:56,028 INFO L440 LassoAnalysis]: Non-Termination argument consisting of: Initial state: {ULTIMATE.start_base2flt_~m#1=-1} Honda state: {ULTIMATE.start_base2flt_~m#1=-1} Generalized eigenvectors: [] Lambdas: [] Nus: [] [2021-11-13 17:47:56,062 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (16)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:56,062 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,063 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,067 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,073 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:56,073 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:56,084 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Waiting until timeout for monitored process [2021-11-13 17:47:56,119 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (17)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:56,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,120 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Waiting until timeout for monitored process [2021-11-13 17:47:56,123 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:56,123 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:56,163 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:56,166 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (18)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:56,166 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:56,166 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:56,166 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:56,166 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:56,166 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:56,166 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,166 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:56,167 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:56,167 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration4_Loop [2021-11-13 17:47:56,167 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:56,167 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:56,168 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:56,211 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:56,308 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:56,309 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:56,309 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,309 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,319 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (15)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:56,333 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Waiting until timeout for monitored process [2021-11-13 17:47:56,338 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:56,349 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:56,349 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:56,349 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:56,349 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:56,349 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:56,354 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:56,354 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:56,371 INFO L527 LassoAnalysis]: Proving termination failed for this template and these settings. [2021-11-13 17:47:56,408 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (19)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:56,408 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,409 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,410 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,419 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Waiting until timeout for monitored process [2021-11-13 17:47:56,420 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:56,428 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:56,428 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:56,428 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:56,429 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:56,429 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:56,431 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:56,431 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:56,455 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:56,462 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:56,462 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:56,462 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,462 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,465 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Waiting until timeout for monitored process [2021-11-13 17:47:56,469 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:56,470 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:56,470 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:56,470 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-13 17:47:56,494 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (20)] Ended with exit code 0 [2021-11-13 17:47:56,495 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:56,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:56,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:56,548 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:56,550 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:56,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:56,596 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:56,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:56,614 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:56,616 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 [2021-11-13 17:47:56,616 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15 Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:56,647 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 35 states and 45 transitions. cyclomatic complexity: 15. Second operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 52 states and 65 transitions. Complement of second has 5 states. [2021-11-13 17:47:56,649 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:56,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 5.333333333333333) internal successors, (16), 3 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:56,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 43 transitions. [2021-11-13 17:47:56,652 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 3 letters. [2021-11-13 17:47:56,653 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:56,653 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 16 letters. Loop has 3 letters. [2021-11-13 17:47:56,655 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:56,655 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 43 transitions. Stem has 13 letters. Loop has 6 letters. [2021-11-13 17:47:56,656 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:56,656 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 52 states and 65 transitions. [2021-11-13 17:47:56,657 INFO L131 ngComponentsAnalysis]: Automaton has 5 accepting balls. 15 [2021-11-13 17:47:56,661 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 52 states to 49 states and 61 transitions. [2021-11-13 17:47:56,661 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 42 [2021-11-13 17:47:56,663 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 43 [2021-11-13 17:47:56,663 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-13 17:47:56,663 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:56,663 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-13 17:47:56,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-13 17:47:56,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 38. [2021-11-13 17:47:56,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.2894736842105263) internal successors, (49), 37 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:56,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 49 transitions. [2021-11-13 17:47:56,674 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 49 transitions. [2021-11-13 17:47:56,674 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:56,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-13 17:47:56,675 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-13 17:47:56,675 INFO L87 Difference]: Start difference. First operand 38 states and 49 transitions. Second operand has 3 states, 3 states have (on average 4.333333333333333) internal successors, (13), 3 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:56,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:56,697 INFO L93 Difference]: Finished difference Result 40 states and 50 transitions. [2021-11-13 17:47:56,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-13 17:47:56,700 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 40 states and 50 transitions. [2021-11-13 17:47:56,701 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-13 17:47:56,703 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 40 states to 39 states and 49 transitions. [2021-11-13 17:47:56,703 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 32 [2021-11-13 17:47:56,703 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 32 [2021-11-13 17:47:56,703 INFO L73 IsDeterministic]: Start isDeterministic. Operand 39 states and 49 transitions. [2021-11-13 17:47:56,705 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:56,705 INFO L681 BuchiCegarLoop]: Abstraction has 39 states and 49 transitions. [2021-11-13 17:47:56,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states and 49 transitions. [2021-11-13 17:47:56,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 38. [2021-11-13 17:47:56,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 38 states, 38 states have (on average 1.263157894736842) internal successors, (48), 37 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:56,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 48 transitions. [2021-11-13 17:47:56,717 INFO L704 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-13 17:47:56,717 INFO L587 BuchiCegarLoop]: Abstraction has 38 states and 48 transitions. [2021-11-13 17:47:56,718 INFO L425 BuchiCegarLoop]: ======== Iteration 5============ [2021-11-13 17:47:56,718 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 38 states and 48 transitions. [2021-11-13 17:47:56,718 INFO L131 ngComponentsAnalysis]: Automaton has 3 accepting balls. 9 [2021-11-13 17:47:56,718 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:56,719 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:56,720 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:56,720 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:56,720 INFO L791 eck$LassoCheckResult]: Stem: 1030#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1001#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1002#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1032#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1006#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1007#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1008#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1009#L47-3 assume !false; 1029#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1019#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1012#L73-1 base2flt_~m#1 := ~bitwiseAnd(base2flt_~m#1, ~bitwiseComplement(16777216));base2flt_~res~0#1 := ~bitwiseOr(base2flt_~m#1, 16777216 * (128 + base2flt_~e#1));base2flt_~__retres4~0#1 := base2flt_~res~0#1; 1013#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1022#L80-1 main_#t~ret12#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret12#1;havoc main_#t~ret12#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1026#L29-2 assume !(0 == base2flt_~m#1 % 4294967296); 1023#L35-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1025#L47-5 [2021-11-13 17:47:56,721 INFO L793 eck$LassoCheckResult]: Loop: 1025#L47-5 assume !false; 1027#L38-2 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1034#L47-4 assume base2flt_~m#1 % 4294967296 < 16777216; 1025#L47-5 [2021-11-13 17:47:56,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:56,721 INFO L85 PathProgramCache]: Analyzing trace with hash 793003697, now seen corresponding path program 1 times [2021-11-13 17:47:56,722 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:56,722 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1988780445] [2021-11-13 17:47:56,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:56,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:56,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:56,819 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:56,820 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:56,820 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1988780445] [2021-11-13 17:47:56,820 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1988780445] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-13 17:47:56,820 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-13 17:47:56,820 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-11-13 17:47:56,821 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [586094165] [2021-11-13 17:47:56,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-13 17:47:56,821 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:56,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:56,822 INFO L85 PathProgramCache]: Analyzing trace with hash 173971, now seen corresponding path program 1 times [2021-11-13 17:47:56,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:56,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685371525] [2021-11-13 17:47:56,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:56,823 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:56,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:56,827 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:56,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:56,831 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:56,867 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:56,868 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:56,868 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:56,868 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:56,868 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:56,868 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,868 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:56,869 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:56,869 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2021-11-13 17:47:56,869 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:56,869 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:56,870 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:56,877 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:56,943 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:56,943 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:56,943 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:56,943 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:56,944 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:56,948 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Waiting until timeout for monitored process [2021-11-13 17:47:56,949 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:56,949 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:57,008 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (22)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,009 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,009 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,010 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,016 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:57,016 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:57,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Waiting until timeout for monitored process [2021-11-13 17:47:57,079 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:57,088 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (23)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,088 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:57,088 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:57,088 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:57,088 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:57,088 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:57,089 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,089 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:57,089 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:57,089 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration5_Loop [2021-11-13 17:47:57,089 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:57,089 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:57,090 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:57,095 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:57,155 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:57,155 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:57,155 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,155 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,156 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,158 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:57,168 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:57,168 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:57,168 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:57,168 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:57,168 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:57,169 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:57,169 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:57,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Waiting until timeout for monitored process [2021-11-13 17:47:57,184 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:57,189 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:57,190 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:57,190 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,191 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,201 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:57,201 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:57,201 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:57,202 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-13 17:47:57,222 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Waiting until timeout for monitored process [2021-11-13 17:47:57,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (24)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,243 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:57,257 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:57,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:57,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:57,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:57,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:57,326 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:57,364 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:57,365 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 [2021-11-13 17:47:57,366 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15 Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:57,387 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 38 states and 48 transitions. cyclomatic complexity: 15. Second operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 56 states and 69 transitions. Complement of second has 5 states. [2021-11-13 17:47:57,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:57,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 4.5) internal successors, (18), 4 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:57,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 44 transitions. [2021-11-13 17:47:57,393 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 3 letters. [2021-11-13 17:47:57,394 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:57,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 18 letters. Loop has 3 letters. [2021-11-13 17:47:57,395 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:57,395 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 44 transitions. Stem has 15 letters. Loop has 6 letters. [2021-11-13 17:47:57,399 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:57,399 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 56 states and 69 transitions. [2021-11-13 17:47:57,400 INFO L131 ngComponentsAnalysis]: Automaton has 4 accepting balls. 12 [2021-11-13 17:47:57,400 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 56 states to 53 states and 65 transitions. [2021-11-13 17:47:57,401 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 41 [2021-11-13 17:47:57,401 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 44 [2021-11-13 17:47:57,401 INFO L73 IsDeterministic]: Start isDeterministic. Operand 53 states and 65 transitions. [2021-11-13 17:47:57,401 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:57,401 INFO L681 BuchiCegarLoop]: Abstraction has 53 states and 65 transitions. [2021-11-13 17:47:57,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states and 65 transitions. [2021-11-13 17:47:57,406 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 41. [2021-11-13 17:47:57,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 41 states, 41 states have (on average 1.2682926829268293) internal successors, (52), 40 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:57,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 52 transitions. [2021-11-13 17:47:57,406 INFO L704 BuchiCegarLoop]: Abstraction has 41 states and 52 transitions. [2021-11-13 17:47:57,407 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:57,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-13 17:47:57,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-13 17:47:57,407 INFO L87 Difference]: Start difference. First operand 41 states and 52 transitions. Second operand has 4 states, 4 states have (on average 3.75) internal successors, (15), 4 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:57,452 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:57,452 INFO L93 Difference]: Finished difference Result 49 states and 61 transitions. [2021-11-13 17:47:57,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-13 17:47:57,453 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 49 states and 61 transitions. [2021-11-13 17:47:57,454 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-13 17:47:57,455 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 49 states to 49 states and 61 transitions. [2021-11-13 17:47:57,455 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 36 [2021-11-13 17:47:57,455 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 36 [2021-11-13 17:47:57,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 49 states and 61 transitions. [2021-11-13 17:47:57,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:57,456 INFO L681 BuchiCegarLoop]: Abstraction has 49 states and 61 transitions. [2021-11-13 17:47:57,456 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states and 61 transitions. [2021-11-13 17:47:57,457 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 43. [2021-11-13 17:47:57,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 43 states, 43 states have (on average 1.2790697674418605) internal successors, (55), 42 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:57,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2021-11-13 17:47:57,458 INFO L704 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-13 17:47:57,458 INFO L587 BuchiCegarLoop]: Abstraction has 43 states and 55 transitions. [2021-11-13 17:47:57,458 INFO L425 BuchiCegarLoop]: ======== Iteration 6============ [2021-11-13 17:47:57,459 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 43 states and 55 transitions. [2021-11-13 17:47:57,459 INFO L131 ngComponentsAnalysis]: Automaton has 2 accepting balls. 6 [2021-11-13 17:47:57,459 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:57,459 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:57,460 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:57,460 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:57,463 INFO L791 eck$LassoCheckResult]: Stem: 1290#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1260#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1261#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1294#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1265#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1266#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1267#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1268#L47-3 assume !false; 1292#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1278#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1279#L47-3 assume !false; 1291#L38-1 assume base2flt_~e#1 <= -128;base2flt_~__retres4~0#1 := 0; 1272#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1281#L80-1 main_#t~ret12#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret12#1;havoc main_#t~ret12#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1285#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1256#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1257#L80-2 main_#t~ret13#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret13#1;havoc main_#t~ret13#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1293#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1262#L35-3 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1263#L57-11 [2021-11-13 17:47:57,464 INFO L793 eck$LassoCheckResult]: Loop: 1263#L57-11 assume !false; 1269#L58-3 assume base2flt_~m#1 % 4294967296 >= 33554432; 1270#L59-3 assume !(base2flt_~e#1 >= 127);base2flt_~e#1 := 1 + base2flt_~e#1;base2flt_~m#1 := base2flt_~m#1 / 2; 1263#L57-11 [2021-11-13 17:47:57,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash -399436914, now seen corresponding path program 1 times [2021-11-13 17:47:57,465 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:57,465 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [568144326] [2021-11-13 17:47:57,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:57,465 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:57,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:57,501 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:57,501 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:57,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [568144326] [2021-11-13 17:47:57,502 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [568144326] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:47:57,502 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194378968] [2021-11-13 17:47:57,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:57,503 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:57,503 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,520 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2021-11-13 17:47:57,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:57,582 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:57,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:57,633 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:57,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:57,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:57,696 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194378968] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:57,696 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:47:57,697 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2021-11-13 17:47:57,697 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1677166617] [2021-11-13 17:47:57,698 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:57,699 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:57,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:57,699 INFO L85 PathProgramCache]: Analyzing trace with hash 262289, now seen corresponding path program 1 times [2021-11-13 17:47:57,699 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:57,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879271788] [2021-11-13 17:47:57,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:57,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:57,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:57,712 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:57,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:57,720 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:57,759 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:57,759 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:57,759 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:57,759 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:57,759 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:57,760 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,760 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:57,760 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:57,760 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2021-11-13 17:47:57,760 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:57,760 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:57,764 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:57,770 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:57,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (25)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,876 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (21)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,913 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:57,913 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:57,913 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,915 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,934 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Waiting until timeout for monitored process [2021-11-13 17:47:57,935 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:57,935 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:57,967 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (27)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:57,967 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:57,967 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:57,968 INFO L229 MonitoredProcess]: Starting monitored process 28 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:57,970 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:57,970 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:57,971 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Waiting until timeout for monitored process [2021-11-13 17:47:58,015 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:58,018 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (28)] Ended with exit code 0 [2021-11-13 17:47:58,018 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:58,018 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:58,018 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:58,018 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:58,018 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:58,018 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,018 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:58,019 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:58,019 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration6_Loop [2021-11-13 17:47:58,019 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:58,019 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:58,019 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:58,027 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:58,110 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:58,110 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:58,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,110 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:58,111 INFO L229 MonitoredProcess]: Starting monitored process 29 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:58,118 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Waiting until timeout for monitored process [2021-11-13 17:47:58,120 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:58,127 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:58,127 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:58,127 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:58,128 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:58,128 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:58,129 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:58,129 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:58,131 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:58,139 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:58,139 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:58,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:58,141 INFO L229 MonitoredProcess]: Starting monitored process 30 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:58,143 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:58,143 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:58,144 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:58,144 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = -2*ULTIMATE.start_base2flt_~e#1 + 253 Supporting invariants [] [2021-11-13 17:47:58,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Waiting until timeout for monitored process [2021-11-13 17:47:58,187 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (29)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:58,188 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:58,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:58,220 INFO L263 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:58,222 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:58,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:58,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:58,272 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:58,285 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,286 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 [2021-11-13 17:47:58,286 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17 Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:58,292 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 43 states and 55 transitions. cyclomatic complexity: 17. Second operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 46 states and 59 transitions. Complement of second has 4 states. [2021-11-13 17:47:58,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:58,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3 states, 3 states have (on average 7.0) internal successors, (21), 3 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:58,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 41 transitions. [2021-11-13 17:47:58,293 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 3 letters. [2021-11-13 17:47:58,293 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:58,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 22 letters. Loop has 3 letters. [2021-11-13 17:47:58,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:58,294 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 41 transitions. Stem has 19 letters. Loop has 6 letters. [2021-11-13 17:47:58,294 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:58,294 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 46 states and 59 transitions. [2021-11-13 17:47:58,295 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-13 17:47:58,296 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 46 states to 40 states and 51 transitions. [2021-11-13 17:47:58,296 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 29 [2021-11-13 17:47:58,296 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 29 [2021-11-13 17:47:58,296 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 51 transitions. [2021-11-13 17:47:58,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:58,296 INFO L681 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-13 17:47:58,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states and 51 transitions. [2021-11-13 17:47:58,297 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-11-13 17:47:58,298 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 40 states have (on average 1.275) internal successors, (51), 39 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:58,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2021-11-13 17:47:58,298 INFO L704 BuchiCegarLoop]: Abstraction has 40 states and 51 transitions. [2021-11-13 17:47:58,299 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:58,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-13 17:47:58,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2021-11-13 17:47:58,299 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand has 7 states, 7 states have (on average 4.571428571428571) internal successors, (32), 7 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:58,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:58,337 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2021-11-13 17:47:58,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-13 17:47:58,338 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 62 states and 74 transitions. [2021-11-13 17:47:58,339 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-13 17:47:58,340 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 62 states to 56 states and 68 transitions. [2021-11-13 17:47:58,340 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 37 [2021-11-13 17:47:58,340 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 37 [2021-11-13 17:47:58,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 56 states and 68 transitions. [2021-11-13 17:47:58,340 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is not deterministic. [2021-11-13 17:47:58,341 INFO L681 BuchiCegarLoop]: Abstraction has 56 states and 68 transitions. [2021-11-13 17:47:58,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states and 68 transitions. [2021-11-13 17:47:58,342 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 46. [2021-11-13 17:47:58,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 46 states have (on average 1.2608695652173914) internal successors, (58), 45 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:58,343 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 58 transitions. [2021-11-13 17:47:58,343 INFO L704 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-13 17:47:58,343 INFO L587 BuchiCegarLoop]: Abstraction has 46 states and 58 transitions. [2021-11-13 17:47:58,343 INFO L425 BuchiCegarLoop]: ======== Iteration 7============ [2021-11-13 17:47:58,343 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 46 states and 58 transitions. [2021-11-13 17:47:58,344 INFO L131 ngComponentsAnalysis]: Automaton has 1 accepting balls. 3 [2021-11-13 17:47:58,344 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is false [2021-11-13 17:47:58,344 INFO L119 BuchiIsEmpty]: Starting construction of run [2021-11-13 17:47:58,345 INFO L842 BuchiCegarLoop]: Counterexample stem histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-13 17:47:58,345 INFO L843 BuchiCegarLoop]: Counterexample loop histogram [1, 1, 1] [2021-11-13 17:47:58,345 INFO L791 eck$LassoCheckResult]: Stem: 1673#ULTIMATE.startENTRY assume { :begin_inline_ULTIMATE.init } true;#NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier;call #t~string4.base, #t~string4.offset := #Ultimate.allocOnStack(2);call write~init~int(48, #t~string4.base, #t~string4.offset, 1);call write~init~int(0, #t~string4.base, 1 + #t~string4.offset, 1);call #t~string5.base, #t~string5.offset := #Ultimate.allocOnStack(22);call #t~string6.base, #t~string6.offset := #Ultimate.allocOnStack(12); 1647#L-1 assume { :end_inline_ULTIMATE.init } true;assume { :begin_inline_main } true;havoc main_#res#1;havoc main_#t~nondet7#1, main_#t~nondet8#1, main_#t~nondet9#1, main_#t~nondet10#1, main_#t~ret11#1, main_#t~ret12#1, main_#t~ret13#1, main_#t~ret14#1, main_#t~ret15#1, main_~a~0#1, main_~ma~2#1, main_~ea~2#1, main_~b~0#1, main_~mb~2#1, main_~eb~2#1, main_~r_mul~0#1, main_~zero~0#1, main_~one~0#1, main_~sb~0#1, main_~tmp~2#1, main_~tmp___0~0#1, main_~tmp___1~0#1, main_~__retres16~0#1;havoc main_~a~0#1;main_~ma~2#1 := main_#t~nondet7#1;havoc main_#t~nondet7#1;main_~ea~2#1 := main_#t~nondet8#1;havoc main_#t~nondet8#1;havoc main_~b~0#1;main_~mb~2#1 := main_#t~nondet9#1;havoc main_#t~nondet9#1;main_~eb~2#1 := main_#t~nondet10#1;havoc main_#t~nondet10#1;havoc main_~r_mul~0#1;havoc main_~zero~0#1;havoc main_~one~0#1;havoc main_~sb~0#1;havoc main_~tmp~2#1;havoc main_~tmp___0~0#1;havoc main_~tmp___1~0#1;havoc main_~__retres16~0#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 0, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1648#L29 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1677#L79 base2flt_#res#1 := base2flt_~__retres4~0#1; 1651#L80 main_#t~ret11#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~zero~0#1 := main_#t~ret11#1;havoc main_#t~ret11#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := 1, 0;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1652#L29-1 assume !(0 == base2flt_~m#1 % 4294967296); 1653#L35-1 assume base2flt_~m#1 % 4294967296 < 16777216; 1654#L47-3 assume !false; 1675#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1662#L47-2 assume base2flt_~m#1 % 4294967296 < 16777216; 1663#L47-3 assume !false; 1680#L38-1 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1688#L47-2 assume !(base2flt_~m#1 % 4294967296 < 16777216); 1655#L73-1 base2flt_~m#1 := ~bitwiseAnd(base2flt_~m#1, ~bitwiseComplement(16777216));base2flt_~res~0#1 := ~bitwiseOr(base2flt_~m#1, 16777216 * (128 + base2flt_~e#1));base2flt_~__retres4~0#1 := base2flt_~res~0#1; 1656#L79-1 base2flt_#res#1 := base2flt_~__retres4~0#1; 1664#L80-1 main_#t~ret12#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~one~0#1 := main_#t~ret12#1;havoc main_#t~ret12#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~ma~2#1, main_~ea~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1668#L29-2 assume 0 == base2flt_~m#1 % 4294967296;base2flt_~__retres4~0#1 := 0; 1643#L79-2 base2flt_#res#1 := base2flt_~__retres4~0#1; 1644#L80-2 main_#t~ret13#1 := base2flt_#res#1;assume { :end_inline_base2flt } true;main_~a~0#1 := main_#t~ret13#1;havoc main_#t~ret13#1;assume { :begin_inline_base2flt } true;base2flt_#in~m#1, base2flt_#in~e#1 := main_~mb~2#1, main_~eb~2#1;havoc base2flt_#res#1;havoc base2flt_~m#1, base2flt_~e#1, base2flt_~res~0#1, base2flt_~__retres4~0#1;base2flt_~m#1 := base2flt_#in~m#1;base2flt_~e#1 := base2flt_#in~e#1;havoc base2flt_~res~0#1;havoc base2flt_~__retres4~0#1; 1676#L29-3 assume !(0 == base2flt_~m#1 % 4294967296); 1649#L35-3 assume base2flt_~m#1 % 4294967296 < 16777216; 1650#L47-7 [2021-11-13 17:47:58,346 INFO L793 eck$LassoCheckResult]: Loop: 1650#L47-7 assume !false; 1645#L38-3 assume !(base2flt_~e#1 <= -128);base2flt_~e#1 := base2flt_~e#1 - 1;base2flt_~m#1 := 2 * base2flt_~m#1; 1646#L47-6 assume base2flt_~m#1 % 4294967296 < 16777216; 1650#L47-7 [2021-11-13 17:47:58,346 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:58,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1485728147, now seen corresponding path program 1 times [2021-11-13 17:47:58,346 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:58,347 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1529897471] [2021-11-13 17:47:58,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:58,347 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:58,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:58,419 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,419 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-13 17:47:58,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1529897471] [2021-11-13 17:47:58,420 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1529897471] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-13 17:47:58,420 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [572669225] [2021-11-13 17:47:58,420 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:58,420 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-13 17:47:58,421 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:58,421 INFO L229 MonitoredProcess]: Starting monitored process 31 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-13 17:47:58,435 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2021-11-13 17:47:58,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:58,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-13 17:47:58,490 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:58,596 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,597 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-13 17:47:58,697 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:58,697 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [572669225] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-13 17:47:58,698 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-11-13 17:47:58,698 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-11-13 17:47:58,698 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1490084723] [2021-11-13 17:47:58,699 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-11-13 17:47:58,699 INFO L796 eck$LassoCheckResult]: stem already infeasible [2021-11-13 17:47:58,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:58,700 INFO L85 PathProgramCache]: Analyzing trace with hash 236530, now seen corresponding path program 1 times [2021-11-13 17:47:58,700 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-13 17:47:58,700 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1816605918] [2021-11-13 17:47:58,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-13 17:47:58,700 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-13 17:47:58,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:58,709 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-13 17:47:58,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-13 17:47:58,718 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-11-13 17:47:58,750 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:58,750 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:58,750 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:58,750 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:58,750 INFO L129 ssoRankerPreferences]: Use exernal solver: true [2021-11-13 17:47:58,751 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,751 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:58,751 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:58,751 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2021-11-13 17:47:58,751 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:58,751 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:58,752 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:58,759 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:58,825 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:58,826 INFO L404 LassoAnalysis]: Checking for nontermination... [2021-11-13 17:47:58,826 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:58,829 INFO L229 MonitoredProcess]: Starting monitored process 32 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:58,833 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 0 Nilpotent components: true [2021-11-13 17:47:58,833 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:58,845 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Waiting until timeout for monitored process [2021-11-13 17:47:58,903 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (32)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:58,903 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,903 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:58,905 INFO L229 MonitoredProcess]: Starting monitored process 33 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:58,909 INFO L148 nArgumentSynthesizer]: Nontermination analysis: NONLINEAR Allow bounded executions: true Number of generalized eigenvectors: 3 Nilpotent components: true [2021-11-13 17:47:58,909 INFO L160 nArgumentSynthesizer]: Using integer mode. [2021-11-13 17:47:58,935 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Waiting until timeout for monitored process [2021-11-13 17:47:58,974 INFO L444 LassoAnalysis]: Proving nontermination failed: No geometric nontermination argument exists. [2021-11-13 17:47:58,982 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (33)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:58,982 INFO L210 LassoAnalysis]: Preferences: [2021-11-13 17:47:58,982 INFO L126 ssoRankerPreferences]: Compute integeral hull: false [2021-11-13 17:47:58,982 INFO L127 ssoRankerPreferences]: Enable LassoPartitioneer: true [2021-11-13 17:47:58,982 INFO L128 ssoRankerPreferences]: Term annotations enabled: false [2021-11-13 17:47:58,982 INFO L129 ssoRankerPreferences]: Use exernal solver: false [2021-11-13 17:47:58,983 INFO L130 ssoRankerPreferences]: SMT solver command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:58,983 INFO L131 ssoRankerPreferences]: Dump SMT script to file: false [2021-11-13 17:47:58,983 INFO L132 ssoRankerPreferences]: Path of dumped script: [2021-11-13 17:47:58,983 INFO L133 ssoRankerPreferences]: Filename of dumped script: soft_float_3a.c.cil.c_Iteration7_Loop [2021-11-13 17:47:58,983 INFO L134 ssoRankerPreferences]: MapElimAlgo: Frank [2021-11-13 17:47:58,983 INFO L276 LassoAnalysis]: Starting lasso preprocessing... [2021-11-13 17:47:58,984 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:58,991 INFO L141 MapEliminator]: Using MapEliminator with SimplificationTechnique=SIMPLIFY_DDA XnfConversionTechnique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION AddInequalities=false OnlyTrivialImplicationsArrayWrite=true OnlyTrivialImplicationsForModifiedArguments=true OnlyArgumentsInFormula=true [2021-11-13 17:47:59,045 INFO L294 LassoAnalysis]: Preprocessing complete. [2021-11-13 17:47:59,045 INFO L490 LassoAnalysis]: Using template 'affine'. [2021-11-13 17:47:59,045 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:59,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:59,048 INFO L229 MonitoredProcess]: Starting monitored process 34 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:59,051 INFO L120 nArgumentSynthesizer]: Termination Analysis Settings: Termination analysis: LINEAR_WITH_GUESSESNumber of strict supporting invariants: 0Number of non-strict supporting invariants: 1Consider only non-deceasing supporting invariants: trueSimplify termination arguments: trueSimplify supporting invariants: trueOverapproximate stem: false [2021-11-13 17:47:59,062 INFO L338 nArgumentSynthesizer]: Template has degree 0. [2021-11-13 17:47:59,062 INFO L351 nArgumentSynthesizer]: There is no stem transition; disabling supporting invariant generation. [2021-11-13 17:47:59,062 INFO L203 nArgumentSynthesizer]: 1 stem disjuncts [2021-11-13 17:47:59,062 INFO L204 nArgumentSynthesizer]: 1 loop disjuncts [2021-11-13 17:47:59,062 INFO L205 nArgumentSynthesizer]: 2 template conjuncts. [2021-11-13 17:47:59,063 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Waiting until timeout for monitored process [2021-11-13 17:47:59,063 INFO L401 nArgumentSynthesizer]: We have 2 Motzkin's Theorem applications. [2021-11-13 17:47:59,063 INFO L402 nArgumentSynthesizer]: A total of 0 supporting invariants were added. [2021-11-13 17:47:59,075 INFO L420 nArgumentSynthesizer]: Found a termination argument, trying to simplify. [2021-11-13 17:47:59,078 INFO L443 ModelExtractionUtils]: Simplification made 3 calls to the SMT solver. [2021-11-13 17:47:59,078 INFO L444 ModelExtractionUtils]: 0 out of 3 variables were initially zero. Simplification set additionally 0 variables to zero. [2021-11-13 17:47:59,078 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 [2021-11-13 17:47:59,078 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 [2021-11-13 17:47:59,083 INFO L229 MonitoredProcess]: Starting monitored process 35 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (exit command is (exit), workingDir is null) [2021-11-13 17:47:59,088 INFO L435 nArgumentSynthesizer]: Simplifying supporting invariants... [2021-11-13 17:47:59,088 INFO L438 nArgumentSynthesizer]: Removed 0 redundant supporting invariants from a total of 0. [2021-11-13 17:47:59,088 INFO L513 LassoAnalysis]: Proved termination. [2021-11-13 17:47:59,089 INFO L515 LassoAnalysis]: Termination argument consisting of: Ranking function f(ULTIMATE.start_base2flt_~e#1) = 2*ULTIMATE.start_base2flt_~e#1 + 255 Supporting invariants [] [2021-11-13 17:47:59,101 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Waiting until timeout for monitored process [2021-11-13 17:47:59,120 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (34)] Ended with exit code 0 [2021-11-13 17:47:59,120 INFO L297 tatePredicateManager]: 0 out of 0 supporting invariants were superfluous and have been removed [2021-11-13 17:47:59,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-13 17:47:59,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:59,166 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-13 17:47:59,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-13 17:47:59,215 INFO L263 TraceCheckSpWp]: Trace formula consists of 9 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-13 17:47:59,215 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-13 17:47:59,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-13 17:47:59,254 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 [2021-11-13 17:47:59,254 INFO L71 iDifferenceNCSBLazy3]: Start buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 16 Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:59,268 INFO L75 iDifferenceNCSBLazy3]: Finished buchiDifferenceNCSBLazy3. First operand 46 states and 58 transitions. cyclomatic complexity: 16. Second operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Result 50 states and 62 transitions. Complement of second has 4 states. [2021-11-13 17:47:59,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: Buchi interpolant automaton has 3 states 1 stem states 1 non-accepting loop states 1 accepting loop states [2021-11-13 17:47:59,270 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4 states, 4 states have (on average 5.5) internal successors, (22), 4 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:59,270 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 38 transitions. [2021-11-13 17:47:59,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 3 letters. [2021-11-13 17:47:59,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:59,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 24 letters. Loop has 3 letters. [2021-11-13 17:47:59,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:59,270 INFO L84 BuchiAccepts]: Start buchiAccepts Operand 3 states and 38 transitions. Stem has 21 letters. Loop has 6 letters. [2021-11-13 17:47:59,270 INFO L116 BuchiAccepts]: Finished buchiAccepts. [2021-11-13 17:47:59,271 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 50 states and 62 transitions. [2021-11-13 17:47:59,272 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 17:47:59,272 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 50 states to 0 states and 0 transitions. [2021-11-13 17:47:59,272 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-13 17:47:59,273 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-13 17:47:59,273 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-13 17:47:59,273 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:47:59,273 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:47:59,273 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:47:59,273 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-13 17:47:59,273 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-13 17:47:59,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2021-11-13 17:47:59,273 INFO L87 Difference]: Start difference. First operand 0 states and 0 transitions. Second operand has 9 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-13 17:47:59,274 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-13 17:47:59,274 INFO L93 Difference]: Finished difference Result 0 states and 0 transitions. [2021-11-13 17:47:59,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-13 17:47:59,275 INFO L82 GeneralOperation]: Start removeNonLiveStates. Operand 0 states and 0 transitions. [2021-11-13 17:47:59,275 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 17:47:59,275 INFO L88 GeneralOperation]: Finished removeNonLiveStates. Reduced from 0 states to 0 states and 0 transitions. [2021-11-13 17:47:59,275 INFO L87 BuchiClosureNwa]: Accepting states before buchiClosure: 0 [2021-11-13 17:47:59,275 INFO L106 BuchiClosureNwa]: Accepting states after buchiClosure: 0 [2021-11-13 17:47:59,275 INFO L73 IsDeterministic]: Start isDeterministic. Operand 0 states and 0 transitions. [2021-11-13 17:47:59,275 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2021-11-13 17:47:59,275 INFO L681 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:47:59,275 INFO L704 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:47:59,275 INFO L587 BuchiCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-11-13 17:47:59,276 INFO L425 BuchiCegarLoop]: ======== Iteration 8============ [2021-11-13 17:47:59,276 INFO L72 BuchiIsEmpty]: Start buchiIsEmpty. Operand 0 states and 0 transitions. [2021-11-13 17:47:59,276 INFO L131 ngComponentsAnalysis]: Automaton has 0 accepting balls. 0 [2021-11-13 17:47:59,276 INFO L87 BuchiIsEmpty]: Finished buchiIsEmpty Result is true [2021-11-13 17:47:59,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.buchiautomizer CFG 13.11 05:47:59 BoogieIcfgContainer [2021-11-13 17:47:59,282 INFO L132 PluginConnector]: ------------------------ END BuchiAutomizer---------------------------- [2021-11-13 17:47:59,283 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-13 17:47:59,283 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-13 17:47:59,283 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-13 17:47:59,284 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 05:47:51" (3/4) ... [2021-11-13 17:47:59,286 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-13 17:47:59,286 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-13 17:47:59,287 INFO L158 Benchmark]: Toolchain (without parser) took 8533.84ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 79.0MB in the beginning and 47.8MB in the end (delta: 31.2MB). Peak memory consumption was 60.7MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,287 INFO L158 Benchmark]: CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:47:59,288 INFO L158 Benchmark]: CACSL2BoogieTranslator took 372.55ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 87.8MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,289 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.76ms. Allocated memory is still 113.2MB. Free memory was 87.8MB in the beginning and 85.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,289 INFO L158 Benchmark]: Boogie Preprocessor took 52.00ms. Allocated memory is still 113.2MB. Free memory was 85.6MB in the beginning and 83.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,290 INFO L158 Benchmark]: RCFGBuilder took 755.65ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 67.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,290 INFO L158 Benchmark]: BuchiAutomizer took 7279.11ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 67.4MB in the beginning and 47.8MB in the end (delta: 19.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. [2021-11-13 17:47:59,291 INFO L158 Benchmark]: Witness Printer took 3.13ms. Allocated memory is still 142.6MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-13 17:47:59,294 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29ms. Allocated memory is still 81.8MB. Free memory was 53.4MB in the beginning and 53.4MB in the end (delta: 32.1kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 372.55ms. Allocated memory is still 113.2MB. Free memory was 78.7MB in the beginning and 87.8MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.76ms. Allocated memory is still 113.2MB. Free memory was 87.8MB in the beginning and 85.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 52.00ms. Allocated memory is still 113.2MB. Free memory was 85.6MB in the beginning and 83.6MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 755.65ms. Allocated memory is still 113.2MB. Free memory was 83.6MB in the beginning and 67.4MB in the end (delta: 16.2MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * BuchiAutomizer took 7279.11ms. Allocated memory was 113.2MB in the beginning and 142.6MB in the end (delta: 29.4MB). Free memory was 67.4MB in the beginning and 47.8MB in the end (delta: 19.6MB). Peak memory consumption was 51.1MB. Max. memory is 16.1GB. * Witness Printer took 3.13ms. Allocated memory is still 142.6MB. Free memory is still 47.8MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: Constructed decomposition of program Your program was decomposed into 13 terminating modules (6 trivial, 7 deterministic, 0 nondeterministic). One deterministic module has affine ranking function -2 * e + 253 and consists of 4 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. One deterministic module has affine ranking function -2 * e + 253 and consists of 3 locations. One deterministic module has affine ranking function 2 * e + 255 and consists of 3 locations. 6 modules have a trivial ranking function, the largest among these consists of 9 locations. - StatisticsResult: Timing statistics BüchiAutomizer plugin needed 7.2s and 8 iterations. TraceHistogramMax:2. Analysis of lassos took 5.2s. Construction of modules took 0.2s. Büchi inclusion checks took 1.3s. Highest rank in rank-based complementation 3. Minimization of det autom 4. Minimization of nondet autom 9. Automata minimization 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 78 StatesRemovedByMinimization, 9 NontrivialMinimizations. Non-live state removal took 0.0s Buchi closure took 0.0s. Biggest automaton had 46 states and ocurred in iteration 6. Nontrivial modules had stage [7, 0, 0, 0, 0]. InterpolantCoveringCapabilityFinite: 0/0 InterpolantCoveringCapabilityBuchi: 0/0 HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 362 SdHoareTripleChecker+Valid, 261.78ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 355 mSDsluCounter, 699 SdHoareTripleChecker+Invalid, 203.82ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 171 mSDsCounter, 19 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 164 IncrementalHoareTripleChecker+Invalid, 183 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 19 mSolverCounterUnsat, 528 mSDtfsCounter, 164 mSolverCounterSat, 35.71ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown LassoAnalysisResults: nont0 unkn0 SFLI0 SFLT1 conc0 concLT0 SILN0 SILU0 SILI0 SILT6 lasso0 LassoPreprocessingBenchmarks: Lassos: inital20 mio100 ax100 hnf100 lsp57 ukn100 mio100 lsp100 div575 bol100 ite100 ukn100 eq132 hnf44 smp92 dnf100 smp100 tf105 neg100 sie102 LassoTerminationAnalysisBenchmarks: ConstraintsSatisfiability: unsat Degree: 0 Time: 50ms VariablesStem: 0 VariablesLoop: 5 DisjunctsStem: 1 DisjunctsLoop: 1 SupportingInvariants: 0 MotzkinApplications: 2 LassoTerminationAnalysisBenchmarks: LassoNonterminationAnalysisSatFixpoint: 2 LassoNonterminationAnalysisSatUnbounded: 0 LassoNonterminationAnalysisUnsat: 7 LassoNonterminationAnalysisUnknown: 0 LassoNonterminationAnalysisTime: 1.0s - TerminationAnalysisResult: Termination proven Buchi Automizer proved that your program is terminating RESULT: Ultimate proved your program to be correct! [2021-11-13 17:47:59,331 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (35)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:59,553 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Forceful destruction successful, exit code 0 [2021-11-13 17:47:59,750 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (30)] Ended with exit code 0 [2021-11-13 17:47:59,955 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Forceful destruction successful, exit code 0 [2021-11-13 17:48:00,136 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_85dc78d4-b63d-4b1b-a517-685c30cd634e/bin/uautomizer-YU5uOKAj3y/z3 SMTLIB2_COMPLIANT=true -memory:1024 -smt2 -in -t:12000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE